1.if I drove 40 miles west in 2 hours what is my velocity
2.find the time it takes for a bird that travels 15 miles per hour for 3 hours
Answers
1. v= 20 miles/hr
2. d = 45 miles
Further explanationVelocity is a vector that has both magnitude and direction
Velocity is the ratio of distance per time
Can be formulated :
\(\tt v=\dfrac{d}{t}\)
v , m/s
d , m
t, s
1. d = 40 miles
t = 2 hr
\(\tt v=\dfrac{40~miles}{2~hr}\\\\v=20~miles/hr\)
2. maybe you meant the distance traveled
v = 15 miles/hr
t = 3 hr
\(\tt d=v\times t\\\\d=15\times 3\\\\d=45~miles\)
Related Questions
When mixed, aqueous solutions of aluminum nitrate, Al(NO3)3, and ammonium carbonate, (NH4)2CO3, will form a precipitate of aluminum carbonate, Al2(CO3)3. The balanced equation is:
2Al(NO3)3(aq) + 3(NH4)2CO3(aq) à Al2(CO3)3(s) + 6NH4NO3(aq)
Which of the following statements regarding this reaction is incorrect?
A)2 moles of Al(NO3)3 will react with 3 moles of (NH4)2CO3.
B)If 6 moles of (NH4)2CO3 react with sufficient Al(NO3)3, 2 moles of Al2(CO3)3 will be formed.
C)If 0.5 mole of (NH4)2CO3 react with sufficient Al(NO3)3, 3 moles of Al2(CO3)3 will be formed.
D)If 1.5 moles of Al2(CO3)3 are formed, given sufficient starting materials, then 9 moles of NH4NO3 will also be formed.
E)4 moles of Al(NO3)3 will react with 6 moles of (NH4)2CO3.
F)If 4 moles of Al(NO3)3 reacts with 9 moles of (NH4)2CO3 there will be left over (NH4)2CO3
Answers
The incorrect statement regarding the reaction between aqueous solutions of aluminum nitrate, Al(NO3)3, and ammonium carbonate, (NH4)2CO3, which form a precipitate of aluminum carbonate, Al2(CO3)3 is If 0.5 mole of (NH4)2CO3 react with sufficient Al(NO3)3, 3 moles of Al2(CO3)3 will be formed. Option C.
A chemical equation is a description of the chemical reaction that takes place. It contains the formulae of the reactants and products separated by an arrow. The arrow indicates the direction of the reaction. The stoichiometric coefficients in the equation represent the number of moles of each substance involved in the reaction.
Stoichiometry is a branch of chemistry that deals with the quantitative relationships between reactants and products in a chemical reaction. It's important to keep in mind that the law of conservation of mass applies to chemical reactions. This means that the number of atoms of each element present in the reactants must equal the number of atoms of that element present in the products. Thus, stoichiometry plays a significant role in determining how much product is formed from a given amount of reactant and vice versa. Option C.
More on aqueous solutions: https://brainly.com/question/31271307
#SPJ11
which of your body structures was the effector in the reaction time test? what was your motor response?
Answers
Skeletal muscle was the Effector in the reaction time test and motor response reflects the muscular component of reaction time.
The Effector in the reaction time test was the skeletal muscle in the finger which is used to press the button. muscle and glands produces a specific response to a stimuli's and the motor response was reaction time test is the time between electromyographic activity and movement and the motor response is the response which reflects the skeletal muscle component of reaction time.
learn more about Effector
brainly.com/question/3190796
#SPJ4
How does an emerging idea differ from scientific consensus? Which best describes emerging scientific ideas?
Answers
Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.
Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.
They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.
for such more questions on scientific
https://brainly.com/question/29886197
#SPJ8
Which of the following are end-products of glycolysis?
a. CO2 and H2O
b. Pyruvate, CO2, and ATP
c. Pyruvate, NADH, and ATP
d. Acetyl CoA, CO2, and NADH
e. Citrate, H2O, and FADH 2
Answers
The end-products of glycolysis include Pyruvate, NADH, and ATP. Therefore, option C is the correct answer.
Glycolysis is the metabolic pathway that occurs in the cytoplasm of the cell, which plays a vital role in the energy production process. It is also known as the Embden-Meyerhof pathway, and it takes place in the absence of oxygen during cellular respiration.Glycolysis involves the breakdown of glucose into two three-carbon molecules called pyruvate. During the process, a net amount of two molecules of ATP, two molecules of NADH, and two molecules of pyruvate are produced.
The pyruvate is then transported to the mitochondria, where it is further broken down to generate more ATP molecules.
The overall reaction of Glycolysis is:
\(Glucose + 2 NAD^+ + 2 ADP + 2 Pi ⇒2 pyruvate + 2 ATP + 2 NADH + 2 H^+ + 2 H_2O\)
Therefore, The end-products of Glycolysis include: Two molecules of Pyruvate. Two molecules of ATP (Adenosine Triphosphate) are produced. NADH (Nicotinamide Adenine Dinucleotide), which is a high-energy electron carrier, is also produced in glycolysis. hence c option is correct .
To know more about Glycolysis refer here :
https://brainly.com/question/30591040
#SPJ11
What mass of silver nitrate (in grams) must be added to precipitate all of the phosphate ions in 45.0 mL of 0.250 M sodium phosphate solution
Answers
Approximately 1.91 grams of silver nitrate must be added to precipitate all of the phosphate ions in 45.0 mL of 0.250 M sodium phosphate solution.
To precipitate all of the phosphate ions in 45.0 mL of 0.250 M sodium phosphate solution, the mass of silver nitrate needed can be calculated using stoichiometry and the balanced chemical equation for the reaction between silver nitrate (AgNO₃) and sodium phosphate (Na₃PO₄).
The balanced equation for the reaction is:
3AgNO₃ + Na₃PO₄ -> Ag₃PO₄ + 3NaNO₃
From the equation, it can be seen that one mole of silver nitrate reacts with one mole of sodium phosphate to form one mole of silver phosphate.
First, calculate the number of moles of sodium phosphate in the given volume:
Moles of Na₃PO₄ = Volume (in liters) x Concentration (in M)
= 0.045 L x 0.250 mol/L
= 0.01125 mol
Since the stoichiometry of the reaction is 1:1 between silver nitrate and sodium phosphate, the number of moles of silver nitrate required is also 0.01125 mol.
Finally, calculate the mass of silver nitrate using its molar mass:
Mass = Moles x Molar mass
= 0.01125 mol x 169.87 g/mol (molar mass of AgNO₃)
= 1.91 g (rounded to two decimal places)
Hence, approximately 1.91 grams of silver nitrate must be added to precipitate all of the phosphate ions in the 45.0 mL of 0.250 M sodium phosphate solution.
Learn more about silver nitrate here:
https://brainly.com/question/5764610
#SPJ11
When you look at the absorption spectra of cranberry juice and apple juice, what colors/parts of the visible spectrum are absorbed?
Discuss how the colors/parts that are not absorbed contribute to the colors of cranberry juice and apple juice.
Answers
Looking at the absorption Spectra of cranberry juice and apple juice the color and part of the visible spectrum that are absorbed as well as how the colors that are not absorbed contributed to the the colors of the cranberry juice and apple juice are;
When the light actually hits on a surface,it is only a part of it that is reflected to the eyes whereas the rest of the spectrum is then absorbed by the object.
However,if the red wavelength is reflected,you will see the red color,but if all the spectrums are absorbed,you will see the black color,if then all the spectrums is reflected,you will see the white color.
When the light hits the surface, just a part will be reflected in the eyes of the person.
From the complete information, when an individual looks at the absorption spectra of cranberry juice and apple juice, just a part will be seen.
When the light hits the surface, there'll be a reflection in the eyes of the person as just a part will be reflected. The rest of the spectrum will be absorbed by the object.
Also, if the red wavelength is reflected, then one will see the red color. When all the spectrum is absorbed, one will see the black color. Lastly, when all the spectrum is reflected, one will see the white color.
Read related link on:
https://brainly.com/question/17231700
to ensure that the decolorization of crystal violet reaction takes place within the linear range of the crystal violet calibration curve, and that there is an excess of hydroxide ions, 10.0 ml of the stock solution of crystal violet is diluted twice. first, with 10.0e so ml of distilled water and then with 10.0 ml of 0.10 m naoh. what is the [oh-] in the final dilute solution?
Answers
A calibration curve is a regression model that uses the instrument's reaction to known standards to forecast the unknown concentrations of interest-related analytes.
How do you calculate calibration curve?
The formula will have the general form of y = mx + b, where m denotes the slope and b the y-intercept, as in y = 1.05x + 0.2.When making adjustments to measurements made on samples whose values are unknown, use the equation for the calibration curve.Solve for y (the "true" value) by substituting the measured value (x) into the equation. We have four milliliters of a 2.5 x 10–5 molar solution of crystal violet.the crystal violet kinetics process, too.Usually, adding sodium hydroxide in much larger amounts causes the violet color to fade.You must now add the two of them together to complete this reaction.However, we're attempting to determine the crystal violet concentration prior to the reaction.Therefore, we are not attempting any story geometry; rather, we are attempting to determine the concentration of crystal violet at the start of the reaction.And it's not the crystal violet's concentration.We have four milliliters of a crystal violet solution that is 2.5 x 10 n-5 molar in size.When doing a crystal violet kinetics reaction.The violet tint typically vanishes as you add sodium hydroxide in much bigger amounts.Currently, you need to add the two together in this particular reaction.However, we're looking for the crystal violet concentration just before the reaction starts.We are only attempting to determine the concentration of the crystal violet at the start of the reaction; we are not attempting to perform any stories geometry here.Furthermore, it is not the crystal violet's concentration.All of the components in that particular reaction become diluted when two substances are mixed together.So, when you combine two milliliters of sodium hydroxide solution with four milliliters of the crystal violet solution.The total of those volumes makes up your new volume.Therefore, the result of mixing them is a six-ml solution.Therefore, we must apply the equation polarity times volume is equivalent to mill, aren? T times volume here in order to get the concentration before any of the sodium hydroxide reacts.The number of moles remains constant because we haven't initiated the reaction yet, and it also remains constant in this location.We therefore have a 2.5 times 10 to 5 molar solution. Therefore, we have a 2.5 x 10-5 molar solution in a four milliliter volume.We are currently working on the new mill arat E.However, we are aware that the current volume of our system is six mL.We shall divide both sides by six to obtain the new milliarat E, and we will discover that the new polarity is 1.67 times 10 to the -5moles per liter.We diluted the crystal violet with our other solutions, which reduced the polarity.
To learn more about calibration curve refer
https://brainly.com/question/13492847
#SPJ4
How many moles of water are needed to react with 8.4 moles of NO2?
Answers
Answer:
2.8 moles
Explanation:
The number of water needed to react with 8.4 moles of NO₂ is equal to 4.2 moles.
What is a mole?A mole can be defined as a scientific unit that is used to determine a large number of atoms, molecules, and ions. The mass of 1 mole of any chemical element is atomic mass and that of any chemical compound is molar mass.
The number of particles in one mole is equal to 6.023 × 10 ²³ which is known as Avogadro’s constant.
The balanced chemical equation of water and nitrogen dioxide NO₂ is:
\(H_2O + 2NO_2\longrightarrow HNO_3 +HNO_2\)
From the equation, we can say that two moles of nitrogen dioxide (NO₂) react with one mole of water.
8.4 moles of nitrogen dioxide react with water = 8/4/2 = 4.2 mol
Therefore, 4.2 moles of water are needed to react with 8.4 moles of nitrogen dioxide NO₂.
Learn more about the mole, here:
brainly.com/question/26416088
#SPJ5
low molecular weight amines and alcohols are water soluble why isn't the free base
Answers
Low molecular weight amines and alcohols are water-soluble because they can form hydrogen bonds with water molecules, which allows them to dissolve in water.
Amines and alcohols contain polar functional groups such as -NH2 and -OH, respectively, that can form hydrogen bonds with water molecules. These hydrogen bonds allow the molecules to dissolve in water and become water-soluble. However, when the amine or alcohol is in its free base form, it lacks a polar functional group and is typically nonpolar. Nonpolar molecules do not form hydrogen bonds with water and are not water-soluble. As a result, the free base form of these compounds is typically not water-soluble.
Free bases, on the other hand, are generally nonpolar and do not form hydrogen bonds with water. Their lack of polar functional groups and inability to form hydrogen bonds with water make them less soluble in water compared to low molecular weight amines and alcohols.
To know more about hydrogen visit:
https://brainly.com/question/30623765
#SPJ11
Which term describes the small, somewhat circular pattern of wind?
A Easterlies
B Trade Winds
C polar winds
D convection cells
Answers
Answer:
its D, convection cells
A gas sample at stp contains 1. 20 g oxygen and 1. 43 g nitrogen. what is the volume of the gas sample?
Answers
The volume of the gas sample will be 1.79 L.
A liquid, solid, or gas's volume represents the amount of three-dimensional space it occupies. Although there are many additional units that can be used to indicate volume, the most used ones are liters, cubic meters, gallons, milliliters, teaspoons, as well as ounces.
Given data :
Mass of \(O_{2}\) = 1.20 g
Mass of \(N_{2}\) = 1.43 g
Number of moles can be calculated by suing the formula:
Number of moles of \(O_{2}\) = Mass / molar mass = 1.20 / 32 = 0.03 mol
Number of moles of \(N_{2}\) = Mass / molar mass = 1.43 / 28 = 0.05 mol
So, the total count of moles can be calculated by :
Total moles = moles of \(O_{2}\) + moles of \(N_{2}\)
Total moles = 0.03 + 0.05 = 0.08 mol
The volume of the gas at STP can be calculated as:
Volume = 0.08 mol × 22.4 mol/L
Volume = 1.79 L
Therefore, the volume of the gas sample will be 1.79 L.
To know more about volume
https://brainly.com/question/12357202
#SPJ4
how many moles of carbon are in 3.0 moles of c6h12o6
Answers
Answer:
i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.
When a phosphate is transferred from ATP it can?
Answers
Energy is released and ATP is changed into adenosine diphosphate when one phosphate group is eliminated by dissolving a phosphoanhydride bond during a procedure known as hydrolysis (ADP).
Phosphorus can supply energy for cell activities when it is moved from ATP (adenosine triphosphate). It's not unexpected to allude to ATP as the "sub-atomic cash" of energy trade in cells, and the exchange of an ATP phosphate gathering to another particle can deliver energy that can be used to drive metabolic exercises or different cycles.
The association between two of the phosphates in ATP is broken in a cycle known as hydrolysis, which discharges energy and changes the particle of ATP into ADP (adenosine diphosphate).
The energy produced by this response can thusly be utilized by cell cycles to drive various organic tasks.
Learn more about ATP at
https://brainly.com/question/14637256
#SPJ4
How many atoms of each element in the compound 2(PO4)
Answers
Answer:
8 & 13
Explanation:
if chlorine (cl2) costs $0.015/mol and ammonia (nh3) costs $0.0045/mol, what do these chemicals cost per ton?
Answers
The cost of 1 ton of chlorine is $212.88 and the cost of 1 ton of ammonia is $266.93.
Since cost is typically given in terms of moles, we must first calculate the number of moles of each chemical in one ton. To do this, we must know the molecular mass of each chemical. The molecular mass of chlorine is 70.906 g/mol and the molecular mass of ammonia is 17.030 g/mol. Thus, one ton of chlorine (1,000,000 g) contains 14,158.7 moles and one ton of ammonia (1,000,000 g) contains 58,822.2 moles. To calculate the cost per ton, we multiply the cost per mole by the number of moles in one ton. Thus, the cost of 1 ton of chlorine is $212.88 and the cost of 1 ton of ammonia is $266.93.
Learn more about ammonia here:
https://brainly.com/question/15409518
#SPJ4
How are atoms and elements related?
Please explain with full and clear sentences. Thank you! :)
Answers
Answer:
closely related
Explanation:
Elements are substances containing of one type of atom, (e.g carbon element is made up of carbon atoms) . Atoms are the smallest particles into which an element can be devided.Select the terms that describe a mind map.
detailed
detailed
graphic
graphic
colorful
colorful
textual
textual
unordered
unordered
creative
creative
linear
Answers
All these terms describe a mind map detailed graphic , colorful , unordered and creative
What is a mind map ?A mind map is a diagram used to visually organize information into a hierarchyIt shows relationships among pieces of the whole.It is often created around a single concept, drawn as an image in the center of a blank page, to which associated representations of ideas such as images, words and parts of words are added. Major ideas are connected directly to the central concept, and other ideas branch out from those major ideas.The terms that describes a mind map are detailed , as lots of detailing is done using connection symbols
Graphic , they are graphical representation of an information
Colourful , They are colourful as to make it more visually interesting .
Unordered , They information might not be in sequence and so can be called unordered also
Creative , Yes it is creative as it brings out the artist inside you and you think more ideas to make it look more beautiful and understandable .
So All these terms describe a mind map detailed graphic , colorful , unordered and creative.
To know more about Mind Map
https://brainly.com/question/24249068
#SPJ1
what is the molecular formula of sodium sulphate
Answers
what mass of magnesium bromide is formed when one grams of magnesium reacts with 5 g of bromine
Answers
Taking into account the reaction stoichiometry, a mass of 7.57 grams of MgBr₂ is formed when one grams of magnesium reacts with 5 g of bromine.
Reaction stoichiometryIn first place, the balanced reaction is:
Mg + Br₂ → MgBr₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Mg: 1 moleBr₂: 1 moleMgBr₂: 1 moleThe molar mass of the compounds is:
Mg: 24.31 g/moleBr₂: 159.8 g/moleMgBr₂: 184.11 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
Mg: 1 mole ×24.31 g/mole= 24.31 gramsBr₂: 1 mole ×159.8 g/mole= 159.8 gramsMgBr₂: 1 mole ×184.11 g/mole= 184.11 gramsLimiting reagentThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
Limiting reagent in this caseTo determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 24.31 grams of Mg reacts with 159.8 grams of Br₂, 1 grams of Mg reacts with how much mass of Br₂?
mass of Br₂= (1 grams of Mg× 159.8 grams of Br₂) ÷24.31 grams of Mg
mass of Br₂= 6.57 grams
But 6.57 grams of Br₂ are not available, 5 grams are available. Since you have less mass than you need to react with 1 grams of Mg, Br₂ will be the limiting reagent.
Mass of MgBr₂ formedConsidering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 24.31 grams of Mg form 184.11 grams of MgBr₂, 1 grams of Mg form how much mass of MgBr₂?
mass of MgBr₂= (1 grams of Mg× 184.11 grams of MgBr₂)÷ 24.31 grams of Mg
mass of MgBr₂= 7.57 grams
Then, a mass of 7.57 grams of MgBr₂ can be produced.
Lear more about reaction stoichiometry:
brainly.com/question/12642627
#SPJ1
A buffer solution is prepared that is 0.18 M NH3 and 0.27 M NH4Cl. What is the pH of this buffer? Kb for NH3 is 1.8 x 10-5
A. 4.57
B. 9.26
C. 9.43
D. 4.92
E. 9.08
Answers
Option E is Answer. The pH value of the buffer is 9.08
The pH of a solution: It is a measure of hydrogen ion concentration, which in turn is a measure of its own acidity. Pure water dissociates slightly into equal concentrations of hydrogen and hydroxyl (OH−) ions.
The pH is then calculated using the expression:
pH = - log [OH-].-------------(1)
the pH of acidic buffer =pka+log[ acid/salt]
the pH of basic buffer =pkb+log[ base/salt]
Given that Kb=1.8x10^-5
base=0.27M
salt=0.18M
first, we have to calculate the value of kb,
pkb=−log[1.8×10 ^−5]
pkb=4.74
The pH of buffer=pkb+log[base/salt]-------------(2)
We find out the value of kb and now substitute it in equation(2)
pOH=4.74+log[ 0.27/0.18]
=4.74−0.176=4.92
pH=14−4.92=9.08
To know more about the pH of solution:
https://brainly.com/question/26424076
#SPJ4
How does the conductivity of metalloids compare to the conductivity of metals and nonmetals?
Metalloids conduct electricity better than metals, but not as well as nonmetals.
Metals, metalloids, and nonmetals all have the same level of conductivity.
Metalloids conduct electricity better than nonmetals, but not as well as metals.
Metalloids cannot conduct electricity.
Answers
The conductivity of metalloids can be compared to the conductivity of metals and nonmetals because metalloids conduct electricity better than nonmetals, but not as well as metals (Option C).
What are metalloids?The expression metalloids is a term used to denote chemical elements that have features resembling metals such as an acceptable electrical conductivity, but they are not metals (e.g. boron, germanium, antimony, arsenic, polonium, etc).
Therefore, with this data, we can see that metalloids are similar to metals in electrical conductivity but they are not metals because they do not fit all properties of metals.
Learn more about metalloids here:
https://brainly.com/question/6007181
#SPJ1
The pH of a solution is 5.0. To a 10 ml of this
solution, 990 ml of water is added. Then the pH
V7 6.96
of the resulting solution is
1) 7 2) 8
3) 9
UN, & VN
Answers
Answer:
pH = 7
Explanation:
pH is defined as -log [H⁺]. In a solution of pH 5:
pH = -log [H⁺]
10^(-5) = [H⁺]
1x10⁻⁵M = [H⁺].
Then, this solution is diluted from 10mL to 1000mL (990mL of water + 10mL of the original solution). That means the solution is diluted:
1000mL / 10mL / 100 times.
If [H⁺] before dilution was 1x10⁻⁵M, after dilution will be:
1x10⁻⁵M / 100 = 1x10⁻⁷M
And pH:
pH = -log [H⁺]
pH = -log 1x10⁻⁷M
pH = 7The ability of an atom in a covalent bond to attract shared electrons to itself is best quantified by its:________
Answers
The ability of an atom in a covalent bond to attract the shared electrons to itself is best quantified by its electronegativity.
Electronegativity is the measure of the tendency of an atom to attract shared electrons in a covalent bond towards itself. It is a property of individual atoms, and it increases across a period and decreases down a group in the periodic table.
The electronegativity difference between two atoms in a covalent bond can indicate the polarity of the bond, with larger differences indicating more polar bonds. The electronegativity scale was proposed by Linus Pauling, and the most commonly used scale is the Pauling scale.
To know more about Electronegativity here
https://brainly.com/question/17762711
#SPJ4
68.19g of magnesium phosphite from mass to grams
Answers
Magnesium phosphite is a white or off-white crystalline compound with a chemical formula of Mg3(PO3)2. It is a strong reducing agent and reacts violently with water, producing toxic fumes of phosphorus oxides. It is commonly used in the manufacture of fertilizers, insecticides, and herbicides.
In this problem, we have 68.19 g of magnesium phosphite, and we need to convert it to grams. The first step is to determine the molar mass of magnesium phosphite. Magnesium has a molar mass of 24.31 g/mol, phosphorus has a molar mass of 30.97 g/mol, and oxygen has a molar mass of 16.00 g/mol. Therefore, the molar mass of magnesium phosphite is:Mg3(PO3)2 = (3 x 24.31 g/mol) + (2 x 31.00 g/mol) + (6 x 16.00 g/mol) = 262.00 g/molNext, we can use the molar mass to convert the given mass of magnesium phosphite to moles:68.19 g Mg3(PO3)2 x (1 mol / 262.00 g) = 0.2605 mol Mg3(PO3)2Finally, we can convert moles to grams by multiplying by the molar mass:0.2605 mol Mg3(PO3)2 x 262.00 g/mol = 68.19 gTherefore, 68.19 g of magnesium phosphite is equal to 0.2605 moles of magnesium phosphite, and its mass is equal to 68.19 g.For such more question on moles
https://brainly.com/question/29367909
#SPJ8
Help me asap, due today
Answers
1. The equation is not balanced. The balanced equation is \(4NH_3 + 5O_2 --- > 4NO +6 H_2O\)
2. The equation is balanced.
3. The equation is not balanced. The balanced version is \(2H_2O --- > 2H_2 + O_2\)
Balancing chemical equationsA balanced chemical equation usually has the same number of atoms of different elements in the reactants and the products, even though the forms of the atoms might have changed.
Consider the first equation: \(NH_3 + O_2 --- > NO + H_2O\)
The number of hydrogen atoms is not balanced. Thus, the equation that shows balanced atoms of different elements would be: \(4NH_3 + 5O_2 --- > 4NO +6 H_2O\)
Consider the second equation: \(N_2 + 3H_2 -- > 2NH_3\)
There are 2 atoms of nitrogen in the reactants and there are also 2 in the product. The number of hydrogen atoms is 6 in the reactants and 6 in the products. Thus, it is a balanced equation.
Consider the third equation: \(2H_2O --- > H_2 + O_2\)
There are 4 hydrogen atoms in the reactant and only 2 in the products. The balanced equation would be: \(2H_2O --- > 2H_2 + O_2\)
More on balancing chemical equations can be found here: https://brainly.com/question/28294176
#SPJ1
which of the following is not a clue that a chemical reaction is taking place A. solid formation B. unexpected color change C. texture change D. new substance is formed
Answers
Answer: C: Texture change is not a clue that a chemical reaction is taking place.
Explanation: During a chemical reaction, the atoms in the reactants rearrange to form new products. This process can result in the formation of a solid, a change in color, or the formation of a new substance. However, the texture of the substances involved in the reaction may or may not change, and it is not a reliable indicator of a chemical reaction.
Therefore, the correct answer is C.
In a chemical reaction, the reactants (beginning elements or compounds) but have the same number and type of atoms as the products (the new substance created). This is an example of...
a) law of conservation of mass
b) law of conservation of energy
c) covalent bonding
d) product synthesis
Answers
Answer:The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products. ... There are two oxygen atoms in the reactants and two atoms of oxygen in the product.
Explanation:
What does the element tile on the
periodic table tell use about the element.
List 4 things
Answers
Why must a special saw be used when removing a cast?
A. Because it is very painful to have a cast removed.
B. Because a cast is made of material that requires a special saw.
C. Because a regular saw is not strong enough to cut the cast.
D. Because a regular saw might cut a person’s skin.
Answers
please help me I need to know these answers rn A, B, OR C to each one
Answers
Answer:
First one
Explanation:
Because water molecules at the surface of the water puddle attract more to one other than they do to the air molecules above them
Answer:
Question 2:
Cohesion and adhesion
Water has forces of attraction between different molecules, so its molecules are locomotive.
Question 3:
Surface tension
It experiences a perpendicular force which keeps the area of the pepper on surface
\({}\)