Answers
Explanation:
Set this up as a ratio:
245 is to 5 as x is to 6
245/5 = x/6
x = 6 *245/5 = 294 ml of strong solution
Related Questions
Al2(SO3)3
a. Count the number of Sulfur atom
b. How many total atoms are given in the compound
Please helppp
Answers
Answer:
from the words below underline six example of rhetorical patterns
Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water . Suppose 28.3 g of hydrobromic acid is mixed with 9.5 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to significant digits.
Answers
The maximum mass of water that could be produced by the chemical reaction would be 4.32 grams.
Stoichiometric problemsThe balanced equation of the reaction is as follows:
\(HBr + NaOH -- > NaBr + H2O\)
mole equivalence of 28.3 g of hydrobromic acid = 28.3/80.91 = 0.35 mol
mole equivalence of 9.5 sodium hydroxide = 9.5/40 = 0.24 mol
Limiting reactant = sodium hydroxide
Mole ratio of sodium hydroxide and water = 1:1
Mole of water produced = 0.24
Mass of 0.24 mol water = 0.24 x 18 = 4.32 grams
In other words, the maximum mass of water that could be produced by the reaction is 4.32 grams.
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How to write 21,000,000 in scientific notation
____ x 10 blank
Answers
Answer: \(2.1 * 10^7\)
Explanation: To find things in scientific notation you basically just move the decimal point so that the number is in the one's place. The exponent is the number of times you moved the decimal place. Ex. 0.000003467 would be 3.467 * 10^-6 because you moved the decimal point six times to the right.
what is the relationship between temperature and kinetic energy?
Answers
Answer:
Temperature is directly proportional to the kinetic energy of the atoms that a body is made of. This relation is valid concerning the velocities relative to the center of mass of the body. In other words, concerted movements like translation and rotation do not affect temperature.
Explanation:
Answer:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
I hope it's helpful!
Why it important not to mix the test solution in one well with the solution in another week on your spot plate
Answers
Depending on the factors, combining two chemicals that aren't designed to interact might result in an explosion, an unintended chemical reaction, or a misleading result.
What is explosion ?An explosion is a sudden increase in volume accompanied by a tremendous energy release that typically results in the production of high temperatures and the discharge of high-pressure gases. High explosive detonations produce supersonic explosions that move through shock waves.
Explosions often fall into one of three categories: chemical, mechanical, or nuclear. Every kind of explosion has the potential to be devastating and serious, wreaking unimaginable damage on the local populace, environment, and infrastructure.
What causes gamma ray bursts is one of the largest unsolved questions of all. These bursts, which happen around once every day, are the most powerful explosions known to science.
Thus, depending on the factors, combining two chemicals that aren't designed to interact might result in an explosion, an unintended chemical reaction.
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9. Compound A, with molecular formula C5H₁2 has only 1° and 4° carbons. What is its structure? Its other isomer has only 1°, 2° and 3° carbons. What is its structure also?
draw the structure
Answers
Answer:
Ok giv me a min
Explanation:
How do the polar easterlies and the jet stream work together to affect the
weather in the United States?
Answers
Answer:
they can carry cold arctic air, producing snow and freezing weather.
Explanation:
-w- hope it helps
A sample of thionylchloride, SOCl2, contains 0.206 mol of the compound. What is the mass of the sample, in grams?
Answers
Explanation:
Moles=mass/molar mass
moles × molar mass = mass
0.206 x 119= mass
Mass= 24. 51grams
Answer:
24.51 g to the nearest hundredth
Explanation:
1 mole of SOCl2 = 32 + 16 + 2 *35.5 = 119 g
0.206 mol = 0.206 * 119
= 24.51 g.
What are two things plants have which animal cells do not
Answers
Answer:
Animal cells don't have a dividing cell wall like plant cells do
Explanation:
Plants cells use photosynthesis from the sun, which requires them to have chloroplast filled with chlorophyll to complete this function; animal cells do not have chloroplasts
Plant cells have three extra components, a vacuole, chloroplast and a cell wall.
Which characteristic is used to classify metamorphic rocks as foliated or non-foliated?
Answers
Answer: d. Arrangement of grains
Explanation:
Edge:)))
A gene for alcohol dehydrogenase is being made in a liver cell.
How can mRNA represent an exact copy of that gene?
O it matches the nucleotides of the DNA exactly.
ODNA polymerase makes a copy of the gene that is inserted into the mRN
it is put together using base-pairing rules.
Answers
DNA polymerase makes a copy of the gene that is inserted into the mRNA
it is put together using base-pairing rules.
How does mRNA represent an exact copy of that gene?
mRNA, or messenger RNA, is a type of RNA that carries genetic information from the DNA in the nucleus of a cell to the ribosomes, where it is used to synthesize proteins. It represents an exact copy of a gene in the sense that it is transcribed directly from the DNA sequence of the gene, with each nucleotide in the mRNA molecule corresponding to a specific nucleotide in the DNA sequence.
This process of transcription ensures that the information contained in the gene is accurately transferred to the ribosomes, where it can be translated into the corresponding sequence of amino acids in the protein. However, it's important to note that mRNA does not represent an exact copy of the entire genome, as only certain genes are transcribed into mRNA and there can be post-transcriptional modifications that affect the final protein product.
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Answer: it is put together using base-pairing rules.
Explanation: i took the test!
Which is better Epoxy or Super Glue?
Answers
Answer:
Personally, I use Superglue
Explanation:
What is the density of a piece of granite whose volume is 20 mL and mass is 53
grams?
3.05 g/mL
2.75 g/mL
4.0 g/mL
2.65 g/mL
Answers
2.65g/ml is the density of a piece of granite whose volume is 20 mL and mass is 53grams. Density is the mass of a specific material per unit volume.
What is density?Density is the mass of a specific material per unit volume. Density is defined as d = M/V, in which d represents density, M is weight, as well as V is volume. Density is generally expressed in grams every cubic centimetre. Water, for example, has a density of 1 gram per square centimeter, but Earth has a density of 5.51 kilograms per cubic centimetre.
Density is sometimes measured in kilos per cubic centimeter (in metre-kilogram-second or SI units). The density of air, for example, is 1.2 kilos per cubic metre.
density = mass / volume
=53/ 20
=2.65g/ml
Therefore, 2.65g/ml is the density of a piece of granite whose volume is 20 mL and mass is 53grams.
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Prospectors are considering searching for gold on a plot of land that contains 2.45 g of gold per bucket of soil. If the volume of the bucket is 5.25L, how many grams of gold are there likely to be in 1.0 cubic feet of soil
Answers
Answer:
13.2 g of gold
Explanation:
We'll begin by converting 5.25 L to ft³.
This can be obtained as follow:
Recall:
1 L = 0.0353 ft³
Therefore,
5.25 L = 5.25 × 0.0353
5.25 L = 1.85×10¯¹ ft³
From the question given above,
2.45 g of gold is present in 5.25 L ( i.e 1.85×10¯¹ ft³) of soil.
Therefore, Xg of gold will be present in 1 ft³ of soil i.e
Xg of gold = 2.45/1.85×10¯¹
Xg of gold = 13.2 g
Therefore, 13.2 g of gold is present in 1 ft³ of the soil.
The irreversible isomerization A
B was carried out in a batch reactor and the following concentration time data were obtained:
Time vs Concentration data in a Batch reactor
t 0 3 5 8 10 12 15 7.5
mol/h 4 2.89 2.25 1.45 1.0 0.65 0.25 0.07
Determine the reaction order,
, and the specific reaction a rate constant, k, using any method of your choice.
Answers
The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.
The term "kinetics" refers to the study of reaction rates, which are determined by measuring the concentration of reactants and products as a function of time.Kinetics experiments can be used to determine the reaction rate and order of reaction. A chemical reaction's rate is defined as the change in the concentration of a reactant or product per unit time. The order of a reaction refers to the number of molecules that must react to produce a product. The order of reaction can be determined by measuring the initial rate of the reaction as a function of concentration.Methods for determining the reaction rate order include the initial rate method, the half-life method, and the integrated rate method. The initial rate method determines the reaction order by measuring the initial rate of the reaction at different reactant concentrations. The half-life method determines the reaction order by measuring the time it takes for the reactant concentration to decrease by half.The integrated rate method determines the reaction order by measuring the concentration of the reactant or product at different times.The specific rate constant can be determined by using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and frequency factor. The frequency factor can be determined by measuring the rate constant at different temperatures.For such more question on polymerization
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A self-aldol or crossed aldol reaction REQUIRES a(n) ___________________. Group of answer choices strong acid only a very, very strong base, such as LDA (lithium diisopropyl amide), NaOH or LiOH won't work acid catalyst a strong base such as LiOH or NaOH
Answers
Answer:
\(\mathbf{a \ strong \ base \ such \ as\ LiOH \ or \ NaOH.}\)
Explanation:
In the condensation reactions of carbonyl compounds, it is essential to establish the order of events in advance to minimize or suppress the possibilities of self-condensation and the occurrence of cross-condensation, which unfortunately are an obvious threat in these reactions.
Self-condensation:
Any carbonyl compound that has one or more alpha hydrogens, on the carbons adjacent to the carbonyl group, runs the risk of undergoing a self-condensation reaction if the corresponding rigor is not carried out.
Cross-condensation:
Ideally, in the condensation reactions of carbonyl compounds, one of the reacting molecules should quickly enolise, while the other preferably should not have Hα, to ensure that no other by-products are formed.
\(\text{To achieve this process;}\) \(\text{A self-aldol or crossed aldol requires a strong base such as LiOH or NaOH.}\)
135 Joules of heat are required to increase the temperature of 10.0 grams of an unknown metal from 25.0∘C to 40.0∘C:
Question: How much heat is required to increase the temperature of 20.0 g of this metal sample from 25.0∘C to 40.0∘C?
Answers
Answer:
270 Joules
Explanation:
The specific heat capacity equation will be used for this question i.e.
Q = m. c. ΔT
Where; Q = Amount of heat
m = mass of substance
C = specific heat capacity of
substance
ΔT = change in temperature
(Final temp - initial temp)
However, for this unknown metal, we need to find the specific heat first by saying; C = Q / mΔT
Q= 135J, C=?, m= 10g, ΔT = (40-25 = 15°C)
C = 135 / 15 × 10
C = 135/150
C = 0.9 J/g°C
If the specific heat capacity of the unknown metal is 0.9 J/g°C, then at a mass of 20.0g, and a ΔT of 15°C, the amount of heat needed is:
Q = m. c. ΔT
Q = 20 × 0.9 × (40-25)
Q = 18 × 15
Q = 270J
270 Joules of heat is needed to increase the temperature of 20g of the metal from 25 - 40°C
Question 17 of 30
For a reaction, AH = -286 kJ. When is the reaction spontaneous?
A. When TAS> 0
B. When TA S= -286 kJ
C. When TAS<-286 kJ
D. When TAS = 2(-286 kJ)
Answers
The reaction is spontaneous when TΔS is greater than zero (TΔS>0).
Spontaneous reactionA spontaneous reaction is determined by applying Gib's free energy formula as follows;
ΔG = ΔH - TΔS
A reaction is spontaneous when Gib's free energy is negative.
For the given example, the change in enthalpy is negative (-286 kJ), to obtain a negative Gib's free energy, the entropy must be positive.
Thus, the reaction is spontaneous when TΔS is greater than zero (TΔS>0).
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A copper sulphate solution has a molar absorptivity value of 20 L mol-1 cm-1. Beta -carotene is an organic compound found in vegetables and is responsible for the color of carrots. Its molar absorptivity is 100,000 L mol-1 cm-1. Which compound is easier to be detected at low concentration using spectrophotometer?
Answers
Answer: beta-carotene
Explanation: The molar absorptivity is a measure of how strongly a compound absorbs light at a specific wavelength. The higher the molar absorptivity, the more strongly the compound absorbs light, and the easier it is to detect at a low concentration.
In this case, beta-carotene has a much higher molar absorptivity than copper sulphate. Beta-carotene has a molar absorptivity of 100,000 L mol-1 cm-1, while copper sulphate has a molar absorptivity of only 20 L mol-1 cm-1.
Therefore, beta-carotene is much easier to detect at low concentrations using a spectrophotometer. Even at low concentrations, beta-carotene will absorb a significant amount of light, while copper sulphate will absorb much less. This means that beta-carotene can be detected at lower concentrations than copper sulphate, making it easier to detect and quantify using a spectrophotometer.
Write a skeleton equation for the reaction in which aqueous sodium chloride
reacts with aqueous silver nitrate to produce aqueous sodium nitrate and solid
silver chloride.
Answers
Answer:
Explanation:according to question:
. Nacl (aq) + AgNO3 (aq) --> AgCl
(s) + NaNO3 (aq).balanced.
A beam of x-ray of wavelength 0.071 nm is diffracted by (110) plane of rock salt with lattice constant (a) 0.28nm. find the glancing angle for the second order diffraction
Answers
The glancing angle for the second order diffraction of X-rays with a wavelength of 0.071 nm diffracted by the (110) plane of rock salt with a lattice constant of 0.28 nm can be calculated using Bragg's law:
2d sinθ = nλ
where d is the interplanar spacing of the (110) plane, n is the order of the diffraction, λ is the wavelength of the X-rays, and θ is the glancing angle.
For the second order diffraction (n = 2), we have:
2d sinθ = 2λ
The interplanar spacing of the (110) plane can be calculated using the formula:
d = a/√(h^2 + k^2 + l^2)
where a is the lattice constant, and h, k, and l are the Miller indices of the (110) plane. For rock salt, h = 1, k = 1, and l = 0 for the (110) plane.
Substituting the values given in the problem, we get:
d = 0.28 nm / √(1^2 + 1^2 + 0^2) = 0.14 nm
Substituting the values for d, n, and λ, we get:
2(0.14 nm) sinθ = 2(0.071 nm)
Simplifying, we get:
sinθ = 0.51
Taking the inverse sine, we get:
θ = 30.2 degrees
Therefore, the glancing angle for the second order diffraction is approximately 30.2 degrees.
ionic bonding: the transfer of electrons to form an ionic bond element no. of valence e- dot structure transfer of electrons ions formed compound formed name of compound na f mg o ba cl al o li p al n answers
Answers
Ionic bonding is a type of chemical bond that occurs when electrons are transferred between atoms to form ions. The resulting ions are attracted to each other by their opposite charges and form an ionic compound. Here is a summary of the information you provided:
Element: Na (sodium)
Number of valence electrons: 1
Dot structure: Na
Transfer of electrons: Na loses 1 electron to become Na+
Ions formed: Na+ and Cl-
Compound formed: Sodium chloride (NaCl)
Name of compound: Salt
Element: F (fluorine)
Number of valence electrons: 7
Dot structure: F
Transfer of electrons: F gains 1 electron to become F-
Ions formed: F- and Mg2+
Compound formed: Magnesium fluoride (MgF2)
Element: O (oxygen)
Number of valence electrons: 6
Dot structure: O
Transfer of electrons: O gains 2 electrons to become O2-
Ions formed: Ba2+ and O2-
Compound formed: Barium oxide (BaO)
Element: Li (lithium)
Number of valence electrons: 1
Dot structure: Li
Transfer of electrons: Li loses 1 electron to become Li+
Ions formed: Li+ and Cl-
Compound formed: Lithium chloride (LiCl)
Element: P (phosphorus)
Number of valence electrons: 5
Dot structure: P
Transfer of electrons: P gains 3 electrons to become P3-
Ions formed: Al3+ and P3-
Compound formed: Aluminum phosphide (AlP)
Element: N (nitrogen)
Number of valence electrons: 5
Dot structure: N
Transfer of electrons: N gains 3 electrons to become N3-
Ions formed: Al3+ and N3-
Compound formed: Aluminum nitride (AlN)
What is the purpose of the ice?
Answers
Answer:
Ice act and help in condensation of the vapor
Explanation:
The energy released when gaseous water vapor condenses to form liquid water droplets is called latent heat. Latent heat from condensation causes an increase in air temperature surrounding the water droplets. The warmer air rises, causing the water vapor to condense when it meets cooler air at a higher altitude
what is the formula for paracetamol
Answers
even one or two crystals of copper sulphate can make its solution in water coloured blue. why
Answers
this also may happen because of the water molecules that get attached
A template of a Venn diagram representing common and differentiating characteristics of covalent and ionic bonds is shown. Which of the following characteristics can be written only in space C?
Answers
Covalent and ionic bonds refer to atoms joined by their electrons. In covalent bonds, electrons are shared by the involved non-metal atoms. Option 2 is correct. Occurs due to the sharing of electrons between two non-metal atoms.
What are covalent and ionic bonds?
Both of them, covalent and ionic bonds, are chemical bonds that can form between atoms.
Ionic bonds occur between atoms with different electronegativity. When they bind, they transfer electrons from one atom to the other creating ions with opposite charges that attract each other.
Ionic compounds are formed by anions and cations.
• Cations are positive ions derivated from metals.
• Anions are negative ions derivated from non-metals.
The metal atoms share its electrons with the non-metal ones, creating stable configurations. Ionic bonds do not create molecules.
Covalent bonds are formed between atoms share electrons to be more stable. Atoms involved share electrons equally, creating a strong bond between them.
Covalent bonds are usually formed between non-metal atoms.
Option 2 is correct. Occurs due to the sharing of electrons between two non-metal atoms
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Complete question
A template of a Venn diagram representing common and differentiating characteristics of covalent and ionic bonds is shown.
Which of the following characteristics can be written only in space C?
On the diagram,
The non-overlapping space on the left is marked A, and belongs to the IONIC BOND side of the diagram.The overlapping space is marked B The non-overlapping space on the right is marked C, and belongs to the COVALENT BOND side of the diagram.Options,
Formed between positively and negatively charged ionsOccurs due to the sharing of electrons between two non-metal atomsOccurs in substances that are mostly solids at normal temperature and pressureFormed between an atom with very high electronegativity and an atom with very low electronegativityplease provide explanation!! thank you in advance!!
Answers
The correct rate law of the reaction from the experimental data is k[NO]^2 [O2]. Option D
What is the rate of reaction?The rate of reaction is usually expressed in terms of the amount of reactant consumed or product formed per unit time, and is typically measured in units of moles per liter per second (mol/L/s) or similar units.
We have that;
For NO;
3.4 * 10^-5/8.4 * 10^-6 = 2 * 10^-4/ 2 * 10^-4
4 = 2^n
n = 2
For O2;
8.4 * 10^-6/2.8 * 10^-6 = 3 * 10^-4/ 1 * 10^-4
3 = 3^n
n = 1
Thus the rate law of the reaction is;
Rate = k[NO]^2 [O2]
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calculate the amount of heat needed to melt 190 of solid octane (c8h18) and bring it to a temperature of 99.3. Be sure your answer has a unit symbol and the correct number of significant digits.
Answers
The amount of heat needed to melt 190 of solid octane 1,320,467 J
What is heat?Generally, When two water molecules bond together, energy is released in the form of a hydrophobic interaction.
This energy is released because the oxygen atom of one molecule is attracted to the hydrogen atoms of the other molecule, forming a strong hydrogen bond between the two molecules.
This attraction releases energy, which can be used to power biochemical reactions.
To calculate the amount of heat needed to melt 190g of solid octane (C8H18) and bring it to a temperature of 99.3°C, I used the following equation:
Q = m x ΔT x Cp.
Q is the amount of heat needed, m is the mass, ΔT is the change in temperature, and Cp is the specific heat capacity of the material.Using these values, the equation was solved as follows:
Q = 190g x (99.3°C - 0°C) x 1,096 J/g°C.
This gave a result of 1,320,467 J.
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Work out the density of 50,000 m³ iceberg of mass of 45,850,000 kg
Answers
917Kg/m³ is the density of 50,000 m³ iceberg of mass of 45,850,000kg. Grams per cubic centimeter are a typical unit of measurement for density.
What is density?Density is the mass of a specific material per unit volume. d = M/V, in which d is density, M is weight, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density. For instance, whereas Earth has a density of 5.51 grams per square centimeter, water has a density of 1 gram per cubic centimeter.
Another way to state density is in kilograms per cubic meter. For instance, air weighs 1.2 pounds per cubic metre. In textbooks and manuals, the densities of typical solids, liquids, as well as gases are stated.
density= mass/ volume
= 45,850,000 /50,000
= 917Kg/m³
Therefore, 917Kg/m³ is the density of 50,000 m³ iceberg of mass of 45,850,000kg.
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The speed of sound in a solid medium is 15 times greater than that in air. If the frequency of a wave in the solid is 87 KHz, then what is the wavelength? ( The speed of sound in air is 344 m/s.) m
Answers
The wavelength of the sound in the solid medium, given that the speed of the sound in the solid is 15 times greater than that in air is 0.06 m
How do i determine the wavelength?The wavelength of a wave is defined by the following formular:
Velocity (v) = wavelength (λ) × frequency (f)
v = λf
The following data were obtained from the question:
Speed of sound wave in air (c) of = 344 m/sSpeed of sound in solid medium (v) = 15 × c = 15 × 344 = 5160 m/sFrequency (f) = 87 KHz = 87 × 1000 = 87000 HzWavelength (λ) = ?Velocity (v) = wavelength (λ) × frequency (f)
5160 = wavelength × 87000
Divide both sides by 87000
Wavelength = 5160 / 87000
Wavelength = 0.06 m
Therefore, we can conclude that the wavelength is 0.06 m
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