1. Convert 125L of chlorine gas at STP to mass. 2. Calculate the percent composition for ammonium sulfide. (% for each element). If you have a 1205g sample of ammonium sulfide, what mass of nitrogen is present?

Q: a sample of ammonia (NH3) Liberates 5.59 KJOF heat as it solidifies at its meining point Whar is the…

A: Given : Amount of heat liberated = 5.59 KJ And the heat of fusion of ammonia = 5.66 KJ/mol.

Q: Analysis of a 29.1 g sample of water revealed a mass percent for lead of 4.35%. Calculate the number…

A: Mass percent of lead is equal to the mass of lead divided by the mass of water multiplied by 100.

Q: A chromium containing compound has a formula FexCryO4 and is 28.59% oxygen by mass  Find x and y

A: Given, mass percentage of O in FexCryO4 = 28.59%Molar mass of 4 O in FexCryO4 = 4 × 16 g/mol = 64…

Q: What is the total number of NO2 molecules in 0.25 mole of NO2 gas

A: Given  Number of mole of NO2  = 0.25 mole According to Avogadro's  1 mole of any substance contains…

Q: empirical formula of the compound? List the elements in standard order for carbon compounds:

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Q: Determine the number of formula units in 3.15 mol CaBr2

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Q: Calculate the number of (a) nitrogen molecules (N2 molecules) and (b) nitrogen atoms (N atoms) in…

A: From given data  Mass of N2= 0.111g  Also molar mass of N2= 28 molar mass of N = 14  Formula used…

Q: Determine the mass percent of oxygen in ammonium sulfate.

A: 2.  Given : name of the compound is ammonium sulfate  To be calculated : mass percent of oxygen in…

Q: Magnesium at start is 0.33g   mass at end is 0.49 g    Determine the number of moles of magnesium…

A: The no of moles can be calculated by the following formula. no of moles=massmolar mass Molar mass of…

Q: What is the average mass of the tin in the sample?

A: It is a given a mass spectrum of tin which has 3 peaks at 116 with 27% abundance and 118 with 58%…

Q: how many moles are equal to 31.54 liters of CO2 gas

A: At STP  Pressure = 1 atm Temperature = 273 K Volume = 31.54 L Moles = ?

Q: When 7.80 mg of a compound containing only carbon and hydrogen was burned completely in 28.3 mg of…

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Q: Calculate the percent by mass of water. 53. Ca(SO4)2 · 2H2O(s)

A: We are given a hydrated salt  Ca(SO4)2 · 2H2O. The total mass of the hydrated salt = 172.17 g/mol.…

Q: How many moles are present in 67.6 grams block of ice?

A: The number of moles (n), mass (m) and molecular mass of a sample of a compound (M) are related as:

Q: A mixture of gases has the following composition by mole: C2- 10% 02-75% N2- 15% What are the…

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Q: How many moles of SO3 can be formed if 23.6 g of oxygen is consumed? Enter mols for unit.

A: Here we are using unitary method to solve this problem.

Q: A 21.8 g sample of water contains how many water molecules?

A:

Q: Oxygen gas is a diatomic molecule. How many mole are contained in 4.23×10exp14 molecules of oxygen…

A: This problem can be solved by knowing that one mole of any substance contains6.022×1023 particles.

Q: A student decides to conduct an experiment by using two different flasks and two different gas…

A: Average kinetic energy and rms velocity calculation:

Q: n. Calculate the maximum mass of water that could be produced by the chemical reaction. Rou

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Q: 2, how many moles of water can form?

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Q: percent of carbon dioxide in the sample?

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Q: A 4.00 g sample of a hydrate of nickel(III) bromide looses 0.793 g of water when heated. Determine…

A: It is given that the mass of hydrate of nickel (III) bromide is 4 gOn heating it losses 0.793 g of…

Q: Determine the number of moles (of molecules or formula units) in sample. 23.6 kg Fe(NO3)2

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Q: 48.1g of aluminum hydroxide to molecules of aluminum hydroxide

A: Consider the given information is as follows; Mass of aluminum hydroxide = 48.1 g…

Q: The molar mass unit is gram per mole

A: Molar mass: It the mass of chemical substance that is present in one mole amount of substance.

Q: How many moles of water can be formed from 5 moles of oxygen gas?

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Q: Label the diagram to correctly convert 16.8 L N2 to moles of N2

A: The molar volume of a gas is the volume of one mole of a gas at STP. Amole of any gas occupies 22.4…

Q: using the information from the picture What mass of oxygen gas is produced by the reaction of 7.4g…

A: The reaction involved in photosynthesis: 6CO2  + 6H2O    .............................>…

Q: 4. Which sample represents the smallest number of moles? a. 1L H2 at STP b. 1L Argon at STP C. 1L of…

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Q: 330 hydrogen with unlimited amount of nitrogen makes?

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: What are the methods of finding partial mole volume? Write their names.

A: The partial molar volumes VA and VB in a binary mixture can be evaluated by the method of intercepts

Q: The density of 1.00g/ml  is at 4 degrees . How many water molecules are present in 2.56 ml of water

A: Mass of Water can be calculated as,

Q: Define percentage by mass

A: Percentage by mass is defined as the ratio of mass of solute by mass of solution (solute+solvent)…

Q: Determine the number of moles in 5.31 × 10²³ formula units of BaBr₂.

A: No of formula units of BaBr2 = 5.31 × 10e23 Number of moles = ?

Q: What is the Molecule weight of sarin gas?

A: Given -> Sarin gas

Q: percentage by mass of calcium

A: Mass percentage of any component in a compound is calculated by formula :  Mass % = Mass of…

Q: Use the following information to determine how many moles were produced? Round to two decimal…

A: The pressure of the gas is = 742.1 mmHg The volume of the gas is = 9.65 L The temperature of the gas…

Q: According to the following reaction: 4HCI (aq) - 02 (g) → 2H20 (1) + 2C12 (g) What would you…

A: Solution: From the balanced chemical reaction, we can write the stoichiometric coefficient to…

Q: Calculate the mass percentage of Copper (II) sulfide. Make sure to include the chemical formula.

A: The molecular weight of copper (Cu) = 63.546 g/mol The molecular weight of sulfur (S) = 32.065 g/mol…

Q: What volume of 0, gas is produced if _Sr(CIO3)2>_SrCI, + _02

A: Strontium chloride (SrCl2) is a salt of strontium and chloride. Like all compounds of Sr, this also…

Q: 1. How many moles of hydrogen gas (H2) would contain 2.4 x 1024 hydrogen atoms? а 2 b 5 C 3 d 4°

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Q: In the gaseous state chlorine exists as a diatomic molecule Cl2 (molar mass=70.9g/mol). Calculate…

A: Given that in In the gaseous state chlorine exists as a diatomic molecule Cl2 (molar mass=70.9g/mol)…

Q: Calculate the number of (a) nitrogen molecules (N2 molecules) and (b) nitrogen atoms (N atoms) in…

A: Given the mass of nitrogen gas = 0.111g We know that molecular mass of N2 gas= 28g So calculating…

Q: Use the following information to determine how many moles were produced? Round to two decimal…

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Q: How many grams of ammonia can be formed from 0.383 g of H2. Use correct sigfigs

A: The given data: The mass of hydrogen gas = 0.383 g To determine =The mass of the ammonia produced.

Q: Determine the number of moles in 1.30 × 10²³ formula units of MgCl₂.

A: Applying concept of moles and avogadro concept.

Q: How many moles of argon gas contain 7.52 x 1022 Ar atoms? 0.801 mol 1.25 mol 0.0801 mol 0.125 mol…

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Q: How many oxygen atoms are present in 50.0 g sulfur dioxide? Please show me how to set up

A: In this question, grams of Sulfur dioxide ( SO2 ) is given and you will need to findout the number…