A sample of hydrogen sulfide, H2S, has a mass of 30.50 g. Calculate the number of hydrogen sulfide molecules in the sample.

Q: Calculate the mass % of 2.50 g Na3PO4 + 10.0 g H2O

A:

Q: Suppose you have a sample of sodium weighing 11.50 g. How many atoms of sodium are present in the…

A: Given,Sodium weight 11.50 gMolar mass of sodium 22.989769 g/ mole

Q: A sample of methane, CH4 , has a mass of 77.00g. Calculate the number of methane molecules in the…

A: Mole concept: According to the mole concept, the number of methane molecules in one mole of methane…

Q: Explain how molecular and structural formulas symbolize the composition of compounds

A: Chemical substances written in the form of symbol and formulas of their elements is known as…

Q: Calculate the number of atoms in a 4.70×1034.70×103 g sample of lithium.

A: 1 mol of a sample contains 6.02×1023 atoms. Number of moles of sample can be determined using the…

Q: How many molecules are in one drop of water if 1.00 g of water contains 3.34 × 10 ²² molecules?…

A: 1 gm is equal to 1 mL. Given 1mL=20 drops.

Q: A sample of trifluoroacetic acid, C,HF,O2, contains 72.1 g of fluorine. Calculate the mass of the…

A: 1- First calculate the moles of fluorine atoms :  We know that,  moles of F = ( mass / molar atomic…

Q: A sample of water, H2O, has a mass of 57.2557.25 g. Calculate the number of water molecules in the…

A: we know that, 1 mole=6.023 x 10^23 molecules  1 mole= molar mass of any compound. molar mass of…

Q: A sample of pure carbon disulfide has a mass of 45.05 g. How many molecules of carbon disulfide…

A: Number of mols = weight / molecular weight  Number of molecules  = number of mols × 6.023 × 1023

Q: Calculate the number of atoms of chlorine in a 6.56×106 g6.56×106 g sample of chlorine.

A: We know,  Avogadro number of atoms are present in 1 moles of a compound .The Avogadro number is…

Q: A 1.912g sample of calcium chloride is decomposed into its constituent elements and found to contain…

A: The mass percent of elements is calculated using equation (1) where m is mass of element and M is…

Q: A sample of hydrogen sulfide, H2S, has a mass of 56.75 g. Calculate the number of hydrogen sulfide…

A: Number of molecules can be calculated by using following formulaNumber of molecules = moles ×…

Q: A beaker contains 48.948.9 mL of carbon tetrachloride (CCl4CCl4, density is 1.591.59 g/mL).…

A: Volume of carbon tetrachloride = 48.9 mL  Density = 1.59 g/mL  Density = mass ÷ volume

Q: A sample of ammonia Nh3 contains 1.2 X 1023 hydrogen atoms. How many NH3 molecules are in the…

A: Ammonia (NH3) is a molecule that exists as a gas at Standard temperature (298 K). It contains atoms…

Q: Determine the number of atoms in 77.0 grams of bromine,  Br ( The mass of one mole of bromine is…

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.

Q: A sample of trifluoroacetic acid, C,HF,O2, contains 62.1 g of oxygen. Calculate the mass of the…

A: The mass of oxygen in the trifluoroacetic acid, C2HF3O2 is = 62.1 g The mass of the trifluoroacetic…

Q: 73: A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to…

A: The percent mass composition of an element of a compound gives the concentration of an element of a…

Q: Determine the number of atoms in a 48.3-g sample of zinc.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: A sample of hydrogen sulfide, H2S, has a mass of 57.25 g. Calculate the number of hydrogen sulfide…

A: Given data,Mass of H2S=57.25gMolar mass of H2S=34.1g/mol

Q: Calculate the number of nitrogen atoms in a 150.0 g sample of dinitrogen tetroxide

A:

Q: Determine the number of molecules of ethanol( C 2 H 5 OH) in 47.0 g.

A: In the International System of Units, the mole (symbol: mol) is the unit of measurement for the…

Q: Given the following masses of samples, find the total number of molecules and total number of atoms…

A: The atomic mass of substance is used for calculating the number of moles. One mole of any substance…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 24.0 mg…

A:

Q: Calculate the number of nitrogen atoms in a 70.0 g sample of dinitrogen tetroxide (N,0.).

A: Given :- mass of N2O4 = 70.0 g  To calculate :- number of nitrogen atoms

Q: A sample of hydrogen has a mass of 40.2 grams.  How many H atoms are there in the sample?   How…

A: Given that,mass of hydrogen = 40.2 gMolar mass of hydrogen = 2.016g/molmoles of hydrogen = mass of…

Q: Write the chemical formula, and then calculate the number of molecules in 1.00 g of lithium…

A:

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 25.5 mg…

A:

Q: A sugar crystal contains approximately 2.1x10^17 sucrose (C12H22O11) molecules. What is it’s mass in…

A: The molar mass of the sucrose (C12H22O11) is 342 g/mol.The number of moles of sucrose can be…

Q: Calculate the number of atoms of iodine in a 7.88×10^6 g sample of iodine.

A:

Q: A sample of CO2 has a mass of 50.0 grams. What is the number of molecules of carbon dioxide in the…

A: We know,Number of mole = mass of sample (g)molar mass (gmol-1)and1 mol = 6.022x1023 molecule

Q: Determine the number of atoms of C in 15.0 grams of C₆H₁₂O₆.

A: Given, mass of C₆H₁₂O₆ = 15.0 g Number of atoms of C in 15.0 grams of C₆H₁₂O₆ = ? Note: molar mass…

Q: Find the number of Na' ions in 2.92 g of NaPO,

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Consider a 33.1 g sample of the compound diphosphorus pentabromide How many atoms of phosphorus are…

A: Compound   = diphosphorus pentabromide = P2Br5 Mass of P2Br5 = 33.1g  Molar mass = 461.5 g/mol

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 87.3 g of carbon. Calculate the mass of the…

A: Given that: Mass of carbon = 87.3 g Mass of trifluoroacetic acid = ?

Q: What is the total mass of hydrogen in each of the molecules?(a) CH4(b) CHCl3(c) C12H10O6(d)…

A: Mass of an atom of hydrogen is 1 g/mol.

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4, of mass 22.0 mg.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 20)A 10 g sample of which substance contains the greatest number of hydrogen Atoms? 

A: [A.] 10 g of PH3  Molar mass of PH3 = 33.997 g/mol  Number of moles of PH3 = 10 g / 33.997 g/mol  =…

Q: How many kilograms of AICI3 can be made from 150 kg of chlorine

A: The balance chemical equation for reaction of Al with with Cl2 gas is as follow…

Q: Calculate the number of atoms in a 6.75×10^3 g sample of sulfur.

A: Calculate the number of moles of Sulfur

Q: How many carbon atoms are in 2.65 x 1023 molecules of C,H,?

A:

Q: 1. How many grams of N are present in 2.82 grams of nitrogen trifluoride ? grams N.

A: According to guidelines i can answer only first question, please repost the other questions.   Given…

Q: Calculate the number of atoms of iodine in a 5.25×106 g5.25×106 g sample of iodine.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: Calculate the number of atoms of copper in 2.65 g of copper.

A: The number of atoms of copper in 2.65 g of copper needs to be determined. Required information:…

Q: A sample of trifluoroacetic acid, C,HF,02, contains 25.3 g of fluorine. Calculate the mass of the…

A: One molecule of C2HF3O2 contains 2 atoms of carbon, 1 atom of hydrogen, 3 atoms of fluorine and two…

Q: A 0.500 g sample of tin foil reacted with oxygen to give 0.635 g of product. (a) What is the…

A:

Q: Calculate the number of atoms in a 9.03×103 g sample of sodium.

A:

Q: number of atoms in a 3.37×1033.37×103 g sample of carbon

A: 3.37×1033.37×103 g sample of carbon = 358693.061 g sample of carbon = 3.58 x 105 g sample of carbon

Q: Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A: Chemical formula of Bituminous coal is C137H97O9NS Molar mass of Bituminous coal…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 60.9 g of oxygen. Calculate the mass of the…

A: Sample of trifluoroacetic acid molecular weight                          = (12× 2+ 1+ 3×19+ 16×2) g…

Q: Calculate the mass (in g) of each sample. 5.94x1020 SO3 molecules

A: Given: 5.94*1020 SO3 molecules