Answers
Answer:
C. and D. i think
Explanation:
Related Questions
Compare the location of bonding electrons in a polar covalent bond with those in a nonpolar covalent bond!!?????!????? I NEED HELPPPP
Answers
Answer:
A polar covalent bond will have the electrons shifted more towards one side or the other; a nonpolar bond will have evenly distributed electrons.
Explanation:
The basis for a polar bond is that the electrons are shared unevenly. Some elements are more electronegative than others; that is, they pull harder on the electrons and tend to have more electrons around them. Following the periodic trends, Fluorine is the most electronegative element, so it will likely have the most dense area of electrons in a molecule. All this means that in a polar molecule, the electrons will be spread out unevenly along the lengths of the bonds as some elements will pull on them more than others will.
Nonpolar molecules do not have to worry about differences in electronegativity, and so the electron density will be pretty evenly distributed along the entire molecule.
Hope this helps! :)
The magnesium atom has 12 electrons arranged 2,8,2. What must the atom do to become stable? gain 6 electrons a.lose 6 electrons b.gain 2 electrons c.lose 2 electrons
Answers
Answer:
The answer is Gain 6 electrons.
Explanation: The reason for this is that for electrons to be stable, you need a valence shell of 8 electrons. Since it is arranged 2, 8, 2 , the outer shell is 6 less than 8 meaning it needs to gain 6 electrons.
If the pressure exerted by a gas at 298k in a volume of 0.044 l is 3.81 atm, how many moles of gas are present? r = 0.0821 l*atm/mol*k
Answers
There are approximately 0.16784 moles of gas present.
To find the number of moles of gas present, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
Given:
Pressure (P) = 3.81 atm
Volume (V) = 0.044 L
Gas constant (R) = 0.0821 L*atm/mol*K
Temperature (T) = 298 K
We can rearrange the equation to solve for the number of moles (n):
n = PV / RT
Substituting the given values into the equation:
n = (3.81 atm * 0.044 L) / (0.0821 L*atm/mol*K * 298 K)
Now, let's calculate the value of n:
n = 0.16784 mol
to know more about moles here:
brainly.com/question/15209553
#SPJ11
matching question match the number of outer electron groups correctly to the molecular shape observed. 4 bonding pairs 4 bonding pairs drop zone empty. 3 bonding pairs and 1 lone pair 3 bonding pairs and 1 lone pair drop zone empty. 2 bonding pairs linear 2 bonding pairs and 2 lone pairs 2 bonding pairs and 2 lone pairs drop zone empty. 3 bonding pairs
Answers
4 Bonding Pairs: The molecular shape observed for four bonding pairs is a tetrahedral shape. 3 Bonding Pairs: The molecular shape observed for three bonding pairs is a trigonal planar shape.
What is molecular shape?Molecular shape is the three-dimensional arrangement of the atoms that make up a molecule. It is determined by the number of electrons in the outermost energy level of the molecule's atoms, which is known as the valence shell. The shape of a molecule is determined by the electron-pair repulsion theory.
2 Bonding Pairs and 2 Lone Pairs: The molecular shape observed for two bonding pairs and two lone pairs is a bent shape. This means that the molecule is shaped like a "V" with two corners. Each of the two corners is the result of a single covalent bond connecting two atoms. The two lone pairs are located on the two "arms" of the "V" shape.
3 Bonding Pairs and 1 Lone Pair: The molecular shape observed for three bonding pairs and one lone pair is a trigonal pyramidal shape. This means that the molecule is shaped like a pyramid, with three corners. Each of the three corners is the result of a single covalent bond connecting two atoms. The lone pair is located at the fourth corner of the pyramid.
Learn more about Molecular shape :
brainly.com/question/22697472
#SPJ4
A certain atom has 13 protons, 14 neutrons, and 10 electrons. What is its charge?
Answers
Answer:
+3
Explanation:
there are three more protons than electrons so positive 3
The volume of water that must be added in order to dilute 40 ml of 9. 0 m hcl to a concentration of 6. 0 m is closest to.
Answers
The volume of water that must be add is 20 mL. Volume of water that must add is new volume after dilution minus initial volume.
How to determine the volume that must be add?As per data given:
Initial volume (V1) = 40 mL = 0.040 L
Initial molarity(C1) = 9.0 M
New molarity (C2)= 6.0 M
As we want to know to the new volume of water(V2). We have to use dilution formula where the formula is C1 x V1 = C2 x V2. So, the calculation would be:
9.0 x 0.040 = 6.0 x V2
V2 = 0.06 L
V2 = 60 mL
Since the addition water is the difference between V2 and V1:
Volume add = V2 -V1
Volume add = 60 - 40
Volume add = 20 mL
Learn more about dilution here
https://brainly.com/question/24881505
#SPJ4
The diagram models a change in some sample of matter.
Before
00
After
What change is illustrated in the diagram?
atoms that formed molecules
molecules that formed atoms
atoms that formed elements
molecules that formed elements
Answers
The change illustrated in the diagram is atoms that formed molecules.
As we can see in the diagram first before the change atoms are free they are not in a combined state but after the reaction, two atoms are combined to form a molecule.
An atom can be defined as the smallest unit of matter that forms a chemical element.
A molecule can be defined as a group of two or more atoms held together by attractive forces known as chemical bonds.
As we can see in the diagram two atoms are combining together to form a molecule.
Hence, we can say that atoms are forming molecules.
The complete question is
To learn more about Molecules follow this link
https://brainly.com/question/12864258
#SPJ9
There is energy releasing and energy absorbing when the atoms combined to formed the molecules and the molecules are combined to formed an elements.
When the atoms formed the molecules the physical and chemical properties are changed.A single atom is neutral entities that is made up of electrons and protons but the molecules are made up of atoms by forming ionic bonds, hydrogen bonds or covalent bond.In this process of formation of molecules is called anabolic process in which energy is required to formed the molecules.And the process is the exothermic process.But if the process is reversed than amount of energy is released to break the molecules into atoms.We need to break the bonds.When the molecules are combined to formed and elements then might be different molecule are combined to formed an elements or same molecules are combined to formed an elements.this is called combination reaction.The chemical reactions involved combination reactions and decomposition reactions.
Learn more about chemical compounds here
https://brainly.com/question/26487468
#SPJ9
For the equilibrium
2H2S(g) ⇋ 2H2(g) + S2(g) Kc = 9 .0X 10-8 at 700°C
the initial concentrations of the three gases are 0.300 M H2S, 0.300 M H2, and 0. 1 50 M S2' Determine the equilibrium concentrations of the gases.
Answers
Answer:
Equilibrium concentrations of the gases are
\(H_2S=0.596M\)
\(H_2=0.004 M\)
\(S_2=0.002 M\)
Explanation:
We are given that for the equilibrium
\(2H_2S\rightleftharpoons 2H_2(g)+S_2(g)\)
\(k_c=9.0\times 10^{-8}\)
Temperature, \(T=700^{\circ}C\)
Initial concentration of
\(H_2S=0.30M\)
\(H_2=0.30 M\)
\(S_2=0.150 M\)
We have to find the equilibrium concentration of gases.
After certain time
2x number of moles of reactant reduced and form product
Concentration of
\(H_2S=0.30+2x\)
\(H_2=0.30-2x\)
\(S_2=0.150-x\)
At equilibrium
Equilibrium constant
\(K_c=\frac{product}{Reactant}=\frac{[H_2]^2[S_2]}{[H_2S]^2}\)
Substitute the values
\(9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}\)
\(9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}\)
\(9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}\)
By solving we get
\(x\approx 0.148\)
Now, equilibrium concentration of gases
\(H_2S=0.30+2(0.148)=0.596M\)
\(H_2=0.30-2(0.148)=0.004 M\)
\(S_2=0.150-0.148=0.002 M\)
Solvent: Will give brainliest
Answers
Answer:
Solvent is 1.00 liter of water.
Answer:
It would be the water i think rlly srry if im wrong thats just what i got
Explanation:
because a solvent would be the one dissolving
2. What is the molar mass of PCls?
Answers
true or false. aldehydes have a central carbon bound to two other carbons
Answers
The statement is false about aldehydes that have a central carbon bound to two other carbons.
Why is it referred to as aldehyde?All aldehydes possess a double bond between carbon and oxygen, which is termed to as the carbonyl group. Many aldehydes have pleasant aromas, and in principle, they are made from alcohols by the process of dehydrogenation (removal of hydrogen), which is how the word "aldehyde" originated.
What are the uses of aldehydes?Aldehydes are versatile substances that can be utilized to create resins, dyes, organic acids, as well as detergents, soaps, and scents for cologne. Formaldehyde is the aldehyde that is most frequently generated industrially. According to research, cinnamonaldehyde is a natural health molecule that is administered to treat both diarrhoea and the common cold.
Learn more about aldehydes here:
brainly.com/question/29756072
#SPJ4
A set of 3 nucleotides read to determine the amino acid.
Answers
The given statement is true; A set of 3 nucleotides read to determine the amino acid.
A set of 3 nucleotides is known as a codon, and each codon specifies a particular amino acid during protein synthesis. The genetic code refers to the nucleotide base sequences on DNA that code for specific amino acids in proteins. The genetic code's codons refer to the arrangement of three nucleotides that encode the 20 naturally occurring amino acids into proteins.
The genetic code is read in a linear manner, starting with the first codon at the beginning of the mRNA and proceeding to the last codon at the end of the mRNA. Amino acids are linked together through peptide bonds to form the primary structure of a protein. The genetic code is universal and found in all living organisms.
Learn more about nucleotides here:
https://brainly.com/question/28178584
#SPJ11
Complete question is:
True or False: A set of 3 nucleotides read to determine the amino acid.
How are zinc and sodium alike?
A.they are both solids at room temperature.
B.they have the same hardness at room temperature.
C.they have the same boiling point.
D.they have the same color.
Answers
Answer: both are solid at room temperture
Explanation:
Answer:
A
Explanation:
What did Antoine Lavoisier’s experiments demonstrate?
A. Atoms always split into pairs during a chemical change.
B. Mass is neither lost nor gained during a chemical change.
C. Matter can be created during a chemical change.
D. Energy is neither lost nor gained during a chemical change.
Answers
What is the frequency of a radio station that has an energy of 5.96 x 10^(-26) J. (h = 6.6262 × 10^ (-34) J•s
A. 3.95 × 10^(-57) Hz
B. 1.79 × 10^(-17) Hz
C. 3.00 × 10^8 Hz
D. 8.99 × 10^7 Hz
Answers
Answer:
d
Explanation:
math
4 molecules of hydrogen (H2) react with 2 molecules of oxygen (O2) to produce some amount of water (H2O).
Complete the table below.
Chemical element Number of atoms in the reaction
-H -
-O -
During this reaction, how many molecules of water (H2O) are produced?
Answers
Answer:
2H2+ 02-->2H20
So 4H2 + 202-->4H20
so the answer is 4 water molecules.
How many significant figures are in the measurement 1.3000 meters
Answers
Answer:
5
Explanation:
mark me brainliest!
Extend your thinking: The slow decay of radioactive materials can be used to find the age of rocks, fossils, and archaeological artifacts. In a process called radiometric dating, scientists measure the proportions of radioactive atoms and daughter atoms in an object to determine its age. Carbon-14 is a useful isotope because it is found in wood, ash, bone, and any other organic materials. You can use the Half-life Gizmo to model the decay of Carbon-14, which has a half-life of approximately 6,000 years (actual value is 5,730 years). In the Gizmo, select User chooses half-life and Theoretical decay. Set the Half-life to 6 seconds (to represent 6,000 years) and the Number of atoms to 100. Use the Gizmo to estimate the age of each of the objects below. For these questions, each second in the Gizmo represents 1,000 years. Description Age (years) Egyptian papyrus with 63% of its original carbon-14 atoms Aboriginal charcoal with 22% of its original carbon-14 atoms. Mayan headdress with 79% of its original carbon-14 atoms Neanderthal skull with 3% of its original carbon-14 atoms
Answers
The age in years of the Egyptian papyrus, the Aboriginal charcoal, the Mayan headdress, and the Neanderthal skull are 4000 years, 13106.5years , 2040 years, and 30353 years respectively.
What is the half-life of a radioactive material?The half-life of a radioactive material is the time taken for half the atoms present in the material to decay or disintegrate.
The half-life, \(t_\frac{1}{2}\), the age, t, and amount remaining, \(A_{r}\), of a radioactive material are related by the formula below:
\(t = \frac{t_\frac{1}{2}*A_{r}}{-ln2}\)Half-life of carbon-14 = 6000 years
For the Egyptian papyrus with 63% of its original carbon-14 atoms:\(t = \frac{6000*0.63}{-0.63} = 4000\:years\)
For the Aboriginal charcoal with 22% of its original carbon-14 atoms:
\(t = \frac{6000*0.22}{-0.63} = 13106.5\:years\)
For the Mayan headdress with 79% of its original carbon-14 atoms:
\(t = \frac{6000*0.79}{-0.63} = 2040\:years\)
Neanderthal skull with 3% of its original carbon-14 atoms:
\(t = \frac{6000*0.03}{-0.63} = 30353\:years\)
Therefore, the age in years of the Egyptian papyrus, the Aboriginal charcoal, the Mayan headdress, and the Neanderthal skull are 4000 years, 13106.5years , 2040 years, and 30353 years respectively.
Learn more about half-life at: https://brainly.com/question/26689704
#SPJ1
I am a man-made element and I keep you safe from smoke and fires in your house.
Answers
C₆H₁₂O₆ + 6O₂→6CO₂ + 6H₂O + Energy
Answers
Answer:
C₆H₁₂O₆ + 6O₂→6CO₂ + 6H₂O + Energy=chemical equation for cellular respiration
Explanation:
hope this help
this is james not jade
Dangerous elements that can pose health risks to humans, such as cadmium, mercury, selenium, lead, and arsenic are also called
acidic pollutants
heavy metals
toxic aggregates
pathogens
Answers
Dangerous elements that can pose health risks to humans, such as cadmium, mercury, selenium, lead, and arsenic, are also called heavy metals.
The term "heavy metals" refers to a group of elements that have high atomic weights and density. These elements, including cadmium, mercury, selenium, lead, and arsenic, are known to be toxic to humans and can pose serious health risks. Heavy metals have the ability to accumulate in the body over time, leading to various adverse effects on organs and systems. They can interfere with essential biological processes, disrupt enzyme activities, and cause damage to organs such as the liver, kidneys, and nervous system. Exposure to heavy metals can occur through various routes, including contaminated water, air pollution, occupational hazards, and the consumption of contaminated food or products. Due to their toxic nature and potential for harm, heavy metals are regulated and monitored to ensure public health and environmental safety.
learn more about cadmium here:
https://brainly.com/question/29977763
#SPJ11
when using a spectrophotometer, if the pathlength is increased
Answers
When using a spectrophotometer, increasing the pathlength can affect the absorbance measurements.
A spectrophotometer measures the amount of light absorbed by a sample as it passes through a specific pathlength. According to Beer-Lambert Law, absorbance (A) is directly proportional to the pathlength (l) and the concentration (c) of the substance in the sample.
The formula for Beer-Lambert Law is: A = εlc, where ε represents the molar absorptivity of the substance. If the pathlength is increased, the absorbance will also increase, assuming the concentration and molar absorptivity remain constant. This is because the light has to travel through a longer distance in the sample, allowing more opportunities for the substance to absorb the light.
In summary, when the pathlength is increased in a spectrophotometer, the absorbance value will typically increase, which can be useful for detecting lower concentrations of a substance. However, it's important to ensure that the pathlength is kept constant and properly calibrated to ensure accurate and consistent results.
To know more about spectrophotometer visit:
https://brainly.com/question/30902666
#SPJ11
what does le chateliter's principle state
Answers
Drag each tile to the correct location. identify the reactants and the products in this chemical equation. 2fe2o3 3c → 4fe 3co2 c co2 fe fe2o3
Answers
On the left side of the chemical process, the reactants are Fe2O3 and C. On the right side of the chemical process, the products are Fe and CO2.
Which of the following claims regarding the response listed below is true: 4Fe(s) + 3O2(g) → 2Fe2O3(g)Because the total mass of iron and oxygen in the reactants and the product are equal, the law of conservation of mass is observed.
How can reactants be recognized?In a chemical equation, the substance or substances to the left of the arrow are referred to as reactants. When a chemical reaction first begins, a substance is said to be the reactant.
Learn more about reactants here:
https://brainly.com/question/17096236
#SPJ4
PLS ANSWER ASAP THANKS
The boiling point of 2-chloroheptane is 46 °C at 19 mmHg. What
is the approximate normal boiling point? you can use the vapor
pressure nomograph
Answers
The approximate normal boiling point of 2-chloroheptane can be determined using a vapor pressure nomograph. Given that the boiling point of 2-chloroheptane is 46 °C at 19 mmHg, we can use the nomograph to estimate the boiling point at normal atmospheric pressure.
1. The vapor pressure nomograph is a graphical representation that relates the boiling point and vapor pressure of a substance at different pressures. To estimate the normal boiling point, we need to determine the vapor pressure at standard atmospheric pressure (760 mmHg) using the given data.
2. On the vapor pressure nomograph, locate the point representing 19 mmHg on the y-axis and draw a horizontal line to intersect with the diagonal line representing the normal boiling point. From this intersection, draw a vertical line down to the x-axis to determine the temperature corresponding to 19 mmHg.
3. By estimating the intersection point, we find that the temperature is approximately 46 °C at 19 mmHg. Since the normal boiling point is defined as the boiling point at atmospheric pressure (760 mmHg), we can approximate the normal boiling point of 2-chloroheptane to be around 46 °C.
4. It's important to note that the accuracy of this approximation depends on the precision and reliability of the vapor pressure nomograph used.
learn more about atmospheric pressure here: brainly.com/question/28310375
#SPJ11
Is it correct or wrong
Answers
Answer:
i think correct
Explanation:
i am not sure but i hope it will help you
At 1700 °C, the equilibrium constant, Kc, for the following reaction is 4.10 × 10–4.N2(g)+O2(g) ----> 2NO(g)What percentage of O2 will react to form NO if 0.459 mol of N2 and 0.459 mol of O2 are added to a 0.665-L container and allowed to come to equilbrium at 1700 °C?
Answers
The percentage of O₂ that will react to form NO at 1700 °C is approximately 98.3%.
This can be calculated by using the equilibrium constant and the initial molar ratios of the reactants. By using the equilibrium equation, we can set the initial molar ratio of N₂ and O₂ to Kc.
In this case, Kc = 4.10 × 10⁻⁴ and the initial molar ratio of N₂ and O₂ is 1:1 (as both have 0.459 mole). The equation can then be rearranged to solve for the percentage of O₂ that will react to form NO. This yields a value of approximately 98.3%.
This value can be used to determine the equilibrium concentration of NO in the container. As the initial molar ratio of N₂ and O₂ is 1:1, the equilibrium molar ratio of NO would also be 1:1. Therefore, the equilibrium concentration of NO in the 0.665-L container would be 0.459 mol/L.
know more about reactants here
https://brainly.com/question/17096236#
#SPJ11
explain how the concentrations of hydrogen ions and hydroxide ions determine whether a solution is acidic, basic, or neutral.
Answers
The higher the concentration of OH- ions, the more basic the solution becomes.Finally, a solution is considered to be neutral if the concentration of H+ ions and OH- ions are equal. In this case, the pH value of the solution is 7.
The concentration of hydrogen ions (H+) and hydroxide ions (OH-) determine whether a solution is acidic, basic or neutral. The pH scale ranges from 0 to 14. If the pH value of a solution is less than 7, it is acidic. If the pH value is greater than 7, it is basic. If the pH value is equal to 7, it is neutral.A solution is considered to be acidic if it has a higher concentration of H+ ions and a lower concentration of OH- ions. In an acidic solution, the concentration of H+ ions is greater than the concentration of OH- ions. The higher the concentration of H+ ions, the more acidic the solution becomes.On the other hand, a solution is considered to be basic if it has a lower concentration of H+ ions and a higher concentration of OH- ions. In a basic solution, the concentration of OH- ions is greater than the concentration of H+ ions. The higher the concentration of OH- ions, the more basic the solution becomes.Finally, a solution is considered to be neutral if the concentration of H+ ions and OH- ions are equal. In this case, the pH value of the solution is 7.
To know more about neutral visit:
https://brainly.com/question/15395418
#SPJ11
Describe how you will separate a mixture of gari and sugar
Answers
Answer:
gari / sugar
Explanation:
Oxygen and chlorine gas are mixed in a container with partial pressures of 0.53 atm and 0.639 atm, respectively. What is the total pressure inside the container (in atm)?
Answers
Answer:
1.17 atm
Explanation:
Calculation to determine the total pressure inside the container (in atm)
Using this formula
Total pressure = Partial pressure 1 + Partial pressure 2
Where,
Partial pressure 1=0.53 atm
Partial pressure 2=0.639 atm
Let plug in the formula
Total pressure = 0.53 atm + 0.639 atm
Total pressure = 1.17 atm
Therefore the total pressure inside the container (in atm) is 1.17 atm