3. Chemical Reactions

How many grams of zinc metal are required to produce 3.5 liters of hydrogen gas at STP according to the chemical equation Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g)?

What is stoichiometry?

According to the following reaction, what mass of PbCl2 can form from 235 mL of 0.110 M KCl solution? Assume that there is excess Pb(NO3)2.2 KCl(aq) + Pb(NO3)2(aq) ⟶ PbCl2(s) + 2 KNO3(aq)

How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mm Hg and a temperature of 21.0°C, can be produced from 5.566 g of Zn reacting with excess HCl? The partial pressure of water vapor is 18.65 mm Hg.

What volume, in mL, of 1.34 M RbOH(aq) is needed to completely neutralize 146 mL of 1.56 M H2SO4(aq)?

What volume, in liters, of sulfur dioxide gas at 455 K and 2.03 atm is needed to produce 89.6 g of sulfur trioxide, SO₃, according to the reaction: 2 SO₂(g) + O₂(g) → 2 SO₃(g)?

How many moles of carbon dioxide are produced in the combustion reaction of 65.14 g of C5H10(g)?2C5H10(g) + 15O2(g) → 10CO2(g) + 10H2O(l)

When 50.0 mL of 0.104 M HClO4 and 75.0 mL of 0.0753 M NaOH are combined, 291 J of heat are produced. If the initial temperature of both solutions was 22.5°C, determine the final temperature of the solution. Assume the density of the solution is 1.00 g/mL and the specific heat capacity is 4.18 J/g°C.

Propane, C3H8, a fuel used in many outdoor grills, burns in oxygen to produce carbon dioxide gas, CO2, and water vapor, H2O, as shown in the reaction below. If 2.0 mol of propane are burned (reacted with oxygen), how many moles of carbon dioxide will be produced?

What minimum mass of h2so4 would you need?

How many liters of dry chlorine gas can be obtained at 40.0°C and 787 mm Hg from the reaction of an aqueous solution containing 9.41 g of HCl with 2.01 g of KMnO4(s) according to the following equation? 2 KMnO4(s) + 16 HCl(aq) → 8 H2O(l) + 2 MnCl2(aq) + 5 Cl2(g)

If 100.0 mL of 0.100 M Na2SO4 is added to 200.0 mL of 0.150 M NaCl, what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.

Zeatin, a plant hormone, is known to have 5 nitrogen atoms in every molecule. Nitrogen makes up 33.8% of the mass of the molecule. What is the mass of one molecule in amu?