Limiting Reagent
If 100.0 molecules of H₂ and 40.0 molecules of O₂ react, how many molecules of H₂O can be produced in the reaction below?
2 H₂(g) + O₂(g) → 2 H₂O(g)
80.0 molecules
What volume of 0.220 M HBr solution (in mL) is required to obtain 0.0600 moles of HBr?
273 mls
Determine the mass in grams of 7.75 × 10²¹ atoms of carbon. (The mass of one mole of carbon is 12.01 g)
0.155 g
According to the balanced reaction below, calculate the number of moles of NH₃ gas that form when 4.20 mol of N₂H₄ liquid completely reacts:
3 N₂H₄(l) → 4 NH₃(g) + N₂(g)
5.60 mol NH₃
Convert 5.01 milliliters to microliters
5.01 × 10³ μL
If 24.7 g of NO and 13.8 g of O₂ are used to form NO₂, how many moles of excess reactant will be left over?
2 NO (g) + O₂ (g) → 2 NO₂ (g)
0.020 mol
600.0 mL of a 0.300 M solution of LiCl is diluted to 900.0 mL. What is the new concentration of the solution?
0.200 M
Determine the molar mass of Cr₃(PO₄)₂. Provide an answer to two decimal places
345.94 g/mol
According to the balanced reaction below, calculate the number of moles of NO₂ gas that forms when 5.20 × 10⁻³ mol of N₂O₅ gas completely reacts:
2 N₂O₅(g) → 4 NO₂(g) + O₂(g)
0.0104 mol NO₂
What is the name and atomic number for the element whose mass number is 196, which contains 117 neutrons per atom?
79 - Gold
If 25.0 g of NH₃ and 45.0 g of O₂ react in the following reaction, what is the mass in grams of NO that will be formed?
4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g)
33.8 g
How many moles of HCl are there in 75.0 mL of 0.150 M HCl?
0.0113 mol
Determine the mass in grams of 3.00 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.
0.373 g
What quantity of moles of H₂SO₄ are required to completely react with 7.20 mol of Al according to the balanced chemical reaction:
2 Al(s) + 3 H₂SO₄(aq) → Al₂(SO₄)₃(aq) + 3 H₂(g)
10.8 mol H₂SO₄
Balance the following chemical equation (if necessary): C₈H₁₈(g) + O₂(g) → CO(g) + H₂O(l)
2 C₈H₁₈(g) + 17 O₂(g) →16 CO(g) + 18 H₂O(l)