One mole of ____ contains the largest number of atoms.
1) S8
2) Cl2
3) Al2(SO4)3
4) C10H8
5) Na3PO4
Answers
One mole of C₁₀H₈ contains the largest number of atoms ( option 4 )
First step : Determine the number of atoms in each mole of the given elements
For S₈8 atoms of sulphur
∴Total atoms = 8 atoms
For CI₂2 atom of Chlorine
∴ Total atoms = 2 atoms
For AI₂(S0₄)₃2 atoms of Al
3 atoms of sulphur
12 atoms of oxygen
∴ Total = 17 atoms in one mole of AI₂(S0₄)₃
For C₁₀H₈10 atoms of Carbon
8 atoms of hydrogen
Total atoms = 18 atoms
For Na₃PO₄3 atoms of sodium
1 atom of P
4 atoms of Oxygen
Total atoms = 8 atoms
Hence we can conclude that One mole of C₁₀H₈ contains the largest number of atoms in the set of elements listed.
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Related Questions
If the same large amount of heat is added to a 250 g piece of aluminum and a 150 g piece of aluminum, what will happen?
Answers
please vote me brainliest i really need it for i can do my work
If 23.5 g of magnesium occupies 13.5 cm^3 what is the density of magnesium
Answers
The density of magnesium will be 1.74 g/cm³ if 23.5 g of magnesium occupies 13.5 cm³
What is Density ?Density is the measurement of how tightly a material is packed together.
It is defined as the mass per unit volume.
Given ;
Mass = 23.5 gVolume = 13.5 cm³Formula to calculate density ;
Density = mass / volume
=23.5 / 13.5 = 1.74 g/cm³
Hence, the density of magnesium will be 1.74 g/cm³ if 23.5 g of magnesium occupies 13.5 cm³.
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Complete the paragraph to describe binary systems.
A binary star system is made of
stars, one of which is brighter than the other. Astronomers are able to detect the dimmer star because its gravity causes the bright star to
. Astronomers can also spot the dimmer star by observing a phenomenon called a(n)
binary. This happens when the dim star passes in front of the bright star.
Answers
Answer: Two, Wobble, Eclipsing.
Explanation:
A binary star system is made of two stars, one of which is brighter than the other. Astronomers are able to detect the dimmer star because its gravity causes the bright star to wobble. Astronomers can also spot the dimmer star by observing a phenomenon called an eclipsing binary.
Answer:
Two, Wobble, Eclipsing.
Explanation:
how do groups and periods on the periodic table differ??
Answers
Answer:
Periods are horizontal rows while the groups are the vertical columns on the periodic table.
Which of the following is not an example of a fossil fuel being used? a. Coal being burned at a power plant. c. Driving a car with a full tank of gasoline. b. Using wood to build a fire. d. Using a natural gas furnace to heat your home.
Answers
Answer:
c, driving a car
Explanation:
got it right :)
have a nice day!~
How much heat would be released by burning one gallon of octane? The density of
octane is 0.703g/mL. 1 gallon = 3.79 liters.
Answers
Answer:
127,236 kj of heat
Explanation:
This is the final answer
Explanation:
One gallon of octane produces approximately 7000 L of carbon dioxide.
Note: At
20
o
C
, the density of octane,
C
8
H
18
, is 0.70300 g/mL, and the mass in grams in one gallon would be 2661 g. http://blueskymodel.org/gallon-gas At
15
o
C
, the density of octane is 0.91786 g/mL (http://www.simetric.co.uk/si_liquids.htm), and the mass of one gallon of octane would be 3474 g, which is approximately 4000 g.
Since the temperature in the problem is
21
o
C
, I believe that the mass of octane should have been given as 2661 g. However, I understand that your instructor probably gave you this problem, so I will use 4000 g for the approximate mass of one gallon of octane. You can rework the problem on your own, substituting the correct masses of octane if you wish.
Step1. You must first determine the number of moles that are in 4000 g of octane, using the molar mass of octane. Step 2. Then you must determine the number of moles of carbon dioxide that can be produced by that number of moles of octane, based on the mole ratio between octane and carbon dioxide in the balanced equation. Step 3. Then use the ideal gas law to determine the volume in liters of carbon dioxide that can be formed.
Known/Given:
mass of octane = approximately 4000 g
temperature:
21.0
o
C
+
273.15
=
294.2 K
pressure = 1.00 atm
gas constant
R
=
0.08205736 L atm K
−
1
mol
−
1
molar mass of octane,
C
8
H
18
=
114.232 g/mol
mole/mole ratio for
C
8
H
18
and
CO
2
=
2 mol
C
8
H
18
/
16 mol
CO
2
Unknown:
volume of
CO
2
Balanced Chemical Equation:
2 C
8
H
18
(
l
)
+
25 O
2
(
g
)
→
16 O
2
(
g
)
+
18 H
2
O
(
g
)
Ideal Gas Law:
PV
=
nRT
Step 1. Determine Moles of Octane in One Gallon
4000 g C
8
H
18
x
1 mol
114.232 g
=
35.0164 mol C
8
H
18
Step 2. Moles of Carbon Dioxide Produced by One Gallon of Octane
Multiply moles of octane times the mole/mole ratio between octane and carbon dioxide, so that carbon dioxide is in the numerator.
35.0164 mol C
8
H
18
x (
16 mol
CO
2
/
2 mol
C
8
H
18
) =
280.1312 mol
CO
2
Step 3. Calculate Volume of
CO
2
Produced from One Gallon of Octane using the Ideal Gas Law, PV = nRT.
P = 1.00 atm
n = 280.1312 mol
CO
2
R=
0.08205736 L atm K
−
1
mol
−
1
T =
294.2 K
V
=
nRT
P
=
(280.1312 x 0.08205736 x 294.2)
1.00 atm
=
6763 L
=
7000 L
due to only one significant figure in 4000 g.
If 3.52 g of K3PO4 was produced in the reaction below and the percent yield was 35.5%, what was the theoretical yield?
Answers
theoretical yield = (actual yield) / (percent yield / 100)
We know that the actual yield is 3.52 g, and the percent yield is 35.5%, so we can substitute these values into the formula:
theoretical yield = 3.52 g / (35.5 / 100)
Simplifying:
theoretical yield = 9.92 g
Therefore, the theoretical yield of K3PO4 is 9.92 g.
This is on one of my homework assignments and I need help understanding this problem.
Answers
According to the electronic configuration, platinum is least reactive and is a noble metal.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.Elements undergo chemical reactions in order to achieve stability.
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In which of these gas-phase equilibria is the yield of products increased by increasing the total pressure on the reaction mixture? (A) CO(g) + H2O (8) CO2 (g) + H2(g) (B) 2NO(g) + Cl2 (g) + 2NOCI (8) (C) 250, (g) = 2502(g) + O2(g) (D) PCIs () PC13 (8) + Cl2 (8) 6. K, for the reaction of SO2 (g) with O2 to produce SO; (g) is 3 x 1024 Calculate K, for this reaction at 25°C. 2SO2 (g) + O2(g) 250 (8) (A) 3 x 1024 (B) 5 x 1021 (C) 2 x 1020 (D) 5 x 1022 (E) 7 x 102 7. The molar solubility of magnesium carbonate is 1.8 x 10 mol/L. What is Kp for this compound? (A) 1.8 x 10 (B) 3.6 x 10-4 (C) 1.3 x 10-7 (D) 3.2 x 10 (E) 2.8 x 10-14
Answers
The correct answer is (B) 2NO(g) + Cl2 (g) + 2NOCI (8). Increasing the total pressure on the reaction mixture will increase the yield of products. For the second question, the correct answer is (E) 7 x 102. Kp for the molar solubility of magnesium carbonate is 3.6 x 10-4.
Chemical equilibrium refers to the situation in a chemical reaction where both the reactants and products are present in concentrations that have no further tendency to change over time, preventing any discernible change in the system's properties. When the forward reaction and the reverse reaction go forward at the same speed, this condition results. The forward and backward reactions typically have equal, if not zero, reaction rates. The concentrations of the reactants and products do not change on a net basis as a result. Dynamic equilibrium is the name given to such a situation.
The reaction's Gibbs free energy, G, must be taken into account at constant temperature and pressure. The Helmholtz free energy, A, must be taken into account at constant temperature and volume. The reaction's entropy, S, must be taken into account at constant internal energy and volume.
In geochemistry and atmospheric chemistry, where pressure changes are considerable, the constant volume case is crucial.
It is thought about the case of constant pressure. By taking into account chemical potentials, the relationship between the Gibbs free energy and the equilibrium constant can be discovered.
The Gibbs free energy for the reaction, G, under constant temperature and pressure in the absence of an applied voltage, depends only on the degree of the reaction: (Greek letter xi), and can only decrease in accordance with the second law of thermodynamics. That indicates that if the reaction occurs, the derivative of G with respect to must be negative; at equilibrium, this derivative equals zero.
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Graham's law states that, the rate by which a gas effuses is __________ to the square root of the molar mass of that gas
A) not related
B) directly proportional
C) inversely proportional
D) a multiple
Answers
chemical porperties of synthetic fiber
Answers
Explanation: Some of the most important properties of synthetic materials are as follows: 1. Tensile strength 2. The Action of water 3. The Action of heat and flame 4. Thermal conductivity 5. Electrical conductivity. The usefulness or otherwise of a synthetic material depends upon the following properties. 1. Tensile strength:
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An engineer is given a time limit of one month to design a compact cell phone that works under water and is durable. What constraint will the engineer be facing when designing this phone?
Size
durability
time for design
resistance to water
Answers
Select all the following solutions that would be expected ph values for basic solutions?
ph 7
ph 9
ph 12
ph 5
ph 10
Answers
Answer:
9, 10, 12
Explanation:
anything greater than pH 7 is basic
Order these compounds in order of decreasing carbon–carbon bond length: HCCH, H2CCH2, H3CCH3.
Answers
The compounds ordered in decreasing carbon-carbon bond length are: H3CCH3 > H2CCH2 > HCCH.
The carbon-carbon bond length is influenced by the hybridization of the carbon atoms and the presence of multiple bonds.
In H3CCH3 (ethane), all carbon atoms are sp3 hybridized, and there are only single bonds between them. The carbon-carbon bond length in ethane is relatively long due to the larger size of sp3 hybrid orbitals. Therefore, H3CCH3 has the longest carbon-carbon bond length among the given compounds.
In H2CCH2 (ethylene), the central carbon atom is sp2 hybridized, and there is a double bond between the carbon atoms. The presence of the double bond results in a shorter carbon-carbon bond length compared to ethane.
In HCCH (acetylene), both carbon atoms are sp hybridized, and there is a triple bond between them. The triple bond contains two pi bonds, which are stronger and shorter than a single or double bond. Therefore, HCCH has the shortest carbon-carbon bond length among the given compounds.
In decreasing order of carbon-carbon bond length, the compounds are arranged as follows: H3CCH3 > H2CCH2 > HCCH.
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What is the melting point of water? I need help
Answers
Answer:
You're answer is B.
Explanation:
I'm extremely sorry if that's wrong.
What is the mass of the sample in units of grams? carbon-14 has a half-life of 5730y. consider a sample of pure carbon-14 with an activity of 0.55 μci
Answers
To determine the mass of the sample in units of grams, we will consider the given information: carbon-14 has a half-life of 5730 years, and the sample of pure carbon-14 has an activity of 0.55 μCi.
1. First, we need to find the decay constant (λ) using the half-life (t1/2) formula:
t1/2 = ln(2) / λ
λ = ln(2) / 5730 years
2. Convert the activity of 0.55 μCi to disintegrations per second (dps):
1 μCi = 3.7 x \(10^4\) dps
0.55 μCi = 0.55 x 3.7 x \(10^4\)dps
3. Calculate the number of carbon-14 atoms (N) using the activity (A) and decay constant (λ):
A = λN
N = A / λ
4. Find the mass of the sample using the number of carbon-14 atoms (N) and the molar mass of carbon-14 (M):
Molar mass of carbon-14: 14 g/mol
Avogadro's number (NA): 6.022 x 10^23\(10^{23\) atoms/mol
Mass = (N / NA) x M
By following these steps and substituting the provided values, you can calculate the mass of the sample in units of grams.
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Which statement best describes how water's properties relate to its functions in a human's biological systems?
O Water absorbs a lot of energy from the skin due to its high specific heat.
O Water enters the body and provides support due to capillary action.
O Water helps decrease the body's density to allow it to float.
O Water dissolves and transports nonpolar covalent compounds in the body.
Answers
Answer:
A
Explanation:
on edge
Answer:
The answer is a
Explanation:
(can someone help me with this) A scientist wants to determine how a solvent’s properties affect its ability to dissolve a solute. The scientist decides to perform an experiment to see if the temperature of water impacts its ability to dissolve salt. The diagram below shows the experimental setup.
question 1: explain how the scientists should collect and organize the data.Identify any measurment devices that should be used and the number of trials that should be performed.
question 2:Explain what the data would have to include to use it as evidence to support your hypothesis.
Answers
help me im in middle school btw
Answers
As two chemicals interact they can change
Explanation:
Some times smoke can indicate a chemical change
How does acid affect limestone?
Answers
Answer:
It reacts by fizzing and wearing away/dissolving the rock.
Explanation:
According to collision theory, which of the following statements explain why an increase in temperature increases the rate of a chemical reaction? (Select all that apply.)
Answers
Answer:
The reactant particles have a greater average kinetic energy.
A smaller fraction of the reactant particles have energy greater than the Ea.
How many moles of FeCI3 are present in 345.0 g FeCI3
Answers
Answer:
\(\boxed {\boxed {\sf About \ 2.127 \ moles \ of \ FeCl_3}}\)
Explanation:
To convert from moles to grams, the molar mass must be used.
1. Find Molar Mass
The compound is iron (III) chloride: FeCl₃
First, find the molar masses of the individual elements in the compound: iron (Fe) and chlorine (Cl).
Fe: 55.84 g/molCl: 35.45 g/molThere are 3 atoms of chlorine, denoted by the subscript after Cl. Multiply the molar mass of chlorine by 3 and add iron's molar mass.
FeCl₃: 3(35.45 g/mol)+(55.84 g/mol)=162.19 g/molThis number tells us the grams of FeCl₃ in 1 mole.
2. Calculate Moles
Use the number as a ratio.
\(\frac{162.19 \ g \ FeCl_3}{1 \ mol \ FeCl_3}\)
Multiply by the given number of grams, 345.0.
\(345.0 \ g \ FeCl_3 *\frac{162.19 \ g \ FeCl_3}{1 \ mol \ FeCl_3}\)
Flip the fraction so the grams of FeCl₃ will cancel.
\(345.0 \ g \ FeCl_3 *\frac{1 \ mol \ FeCl_3}{162.19 \ g \ FeCl_3}\)
\(345.0 *\frac{1 \ mol \ FeCl_3}{162.19 }\)
\(\frac{345.0 \ mol \ FeCl_3}{162.19 }\)
Divide.
\(2.12713484 \ mol \ FeCl_3\)
3. Round
The original measurement of grams, 345.0, has 4 significant figures. We must round our answer to 4 sig figs.
For the answer we calculated, that is the thousandth place.
The 1 in the ten thousandth place tells us to leave the 7 in the thousandth place.
\(\approx 2.127 \ mol \ FeCl_3\)
There are about 2.127 moles of iron (III) chloride in 345.0 grams.
20. A substance with a high volatility A. has a high boiling point. B. tends to stay in the liquid or solid phase. C. readily evaporates. D. can never be a liquid.
Answers
According to this question, a substance with a high volatility readily evaporates.
What is volatility?Volatility is the characteristics of a material which describes how readily the material undergo vaporization.
Volatile substances readily change phase from solid or liquid to gases via the process of vaporization.
Therefore, according to this question, a substance with a high volatility readily evaporates.
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i still need a bit of help.
Answers
If you added a proton to an atom of aluminum it would become a silicone ion
which statement supports the main ideas of the law of conservation of mass? responses the reactants in a chemical reaction are the same as the products. the reactants in a chemical reaction are the same as the products. the masses of the reactants are less than the masses of the products. the masses of the reactants are less than the masses of the products. the masses of the reactants are equal to the masses of the products. the masses of the reactants are equal to the masses of the products. the masses of the reactants are greater than the masses of the products.
Answers
Answer:
the first statement is correct...
it only supports the main idea of the law of conservation of mass...
hope I can help you...
I will mark brainliest!
Which particle has a high rate of deposition?
A. a low-density particle
B. a small particle falling off a cliff
C. a particle with jagged, rough ends
D. a large round particle settling on a surface
Answers
Answer:
C ! :)
Explanation:
Answer:
The correct answer is A
Explanation:
LOW-DENSITY PARRTICLE
single celled organisms are able to maintain homeostasis even though they lack higher levels of organization such as organs and organ systems because
Answers
All cell structures work together to maintain homeostasis.
How does single celled organisms maintain homeostasis?Single-celled organisms, also known as unicellular organisms, maintain homeostasis through a variety of mechanisms. Homeostasis is the maintenance of a stable internal environment, despite changes in the external environment.
Overall, single-celled organisms have evolved a range of mechanisms to maintain homeostasis in their unicellular state, allowing them to survive and thrive in diverse environments.
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Part A Choose the mixture that has the highest melting point. A. 0.100 m C6H12O6 B. 0.100 m AlCl3
C. 0.100 m Bal2 D. 0.100 m KI E. They all have the same melting point.
Answers
The mixture with the highest melting point is option B, 0.100 m \(AlCl_3\).
This is because \(AlCl_3\) is an ionic compound, meaning it has strong electrostatic forces between its ions. These forces require a higher amount of energy to break apart during the melting process, resulting in a higher melting point. In contrast, options A, C, and D are molecular compounds that have weaker intermolecular forces and thus lower melting points. It is important to note that the concentration of the mixture does not affect the melting point, as it only refers to the amount of solute present in a solvent. Therefore, all options have the same concentration, but the type of compound and its intermolecular forces determine the melting point.
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PLEASE HELP
Andrea plans to go fishing in the morning, so she checks the weather forecast. The forecast shows a high-pressure area forming near her fishing spot. Using the weather data below, predict the possible weather conditions for Andrea’s trip.
Time (a.m.) Temperature (°C) Pressure (mb)
7.00 14 995
8.00 14 1001
9.00 14 1113
10.00 15 1120
A.
cloudy skies with minimal precipitation
B.
clear skies with minimal precipitation
C.
cloudy skies with moderate precipitation
D.
clear skies with heavy precipitation
Answers
B Answer:
Explanation:
Higher, 1020 mb +, rising pressure and temp are associated with clear skies and low precipitation
This is because the temperature remains fairly consistent throughout the morning, indicating that there is no significant weather front moving through the area. Additionally, the pressure readings show a high-pressure area forming, which typically indicates stable weather conditions with clear skies and little chance of precipitation.
Therefore, the answer is option B: clear skies with minimal precipitation.
Select which of the following is a major disadvantage of using nuclear power to generate electricity.
The power plants are inexpensive to build
A small amount of power is produced
No greenhouse gases are produced
The by-product of nuclear power is radiation
Answers
Answer:
The power plants
are inexpensive to build