2 H2 (g) + O2 (g) \to 2 H2O (l) a. If 3.5 moles of oxygen gas react with hydrogen, how many moles of water vapor will form? b. If 54.3 grams of water vapor form, how many moles of hydrogen gas are needed? c. How
= 2 mol = 1 mol = 2 molThis ratio is the ratio of stoichiometric numbers in the equation. So the equation is: 2H2 + O2 -->2H2O We can still deduce the stoichiometry of this reaction even if we do not know the mass of oxygen that reacted. The ratio of hydrogen to ...
1. How many moles of H2 are needed to react with 0.65 mol of N2? 2. How many moles of N2 reacted if 0.55 mol of NH3 is produced? In the reaction 2A + B_2 \to 2AB, if 0.5 moles of A and an excess of B are c...
We can use the molar gas volume of 24.0 dm3 at r.t.p. to find: ■ the volume of a given mass or number of moles of gas ■ the mass or number of moles of a given volume of gas. worked examples 22 Calculate the volume of 0.40 mol of nitrogen at r.t.p. (volume (in dm3...
What is the molar mass of Ag? How do you find the molar mass of a gas? How many moles are in 9.8 grams of calcium? Atomic mass of Cu is 63.6 amu. Calculate the mass of 3.5 moles of Cu. How to convert molecular weight from g/mol to lb/mol? What is the molar mass of oxygen...
A sample of perfect gas containing a mass of 0.11 moles at 296 K is allowed to expand reversibly and adiabatically from 0.4 L to 2.0 L. What is the work done by the gas? The constant pressure molar heat capacity ...
Homework Statement Based on your understanding of Avogadro's law. 1000 L steel storage tank contains 88.5 kg of methane gas, CH4. Calculate no. of moles. The Attempt at a Solution one method= no. of moles=mass/molar mass. no. of moles= 88500/16.04= 5517.4 moles.other method= 1 mol=...
Problem: Convert 2.50 moles of KClO3 to grams. Solution: Find out the molar mass of the substance (hint: you can useMolar mass of the substancealone to calculate molar mass). The molar mass of KClO3 is 122.548 g/mol. Multiply the given number of moles (2.50 mol) by the molar mass (...
A 0.30-mol sample of copper metal and 10.0 mL of12 Mnitric acid are mixed in a flask. How many moles of NO gas will form? A.0.060 mol B.0.030 mol C.0.010 mol D.0.20 mol 10.Gold(III) oxide, Au2O3, can be decomposed to gold metal, Au, plus oxygen gas, O2. How many moles ...
1. Calculate the number of molecules in: (a) 125.9 g of nitrogen gas (b) 0.678 mol of NaCl(s) (c) 0.00789 mol of NaOH (aq) (d) 265.0 g of Ca(NO3)2 2. Calculate the number of atoms in: (a) 2.65 g of SO2(g) (b) 235.9 g of CaBr2(s) (c) 0.679 mol H2SO4(aq) (...