Stoichiometry

Front

How many liters of NH₃ are needed to react completely with 1.25 x 10¹⁵ molecules of NO?
4 NH₃+6 NO --> 5 N₂ + 6 H₂O

Back

3.10 x 10^-8

Front

In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield? (% Yield = (Actual / Theoretical) x 100)

Back

82.1%

Front

2 CO  +  O₂  −-> 2 CO₂
How many grams of carbon dioxide are produced from 10.6 L of carbon monoxide?

Back

20.8

Front

What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

Back

125 g O₂

Front

2 NaClO_{3 (s)} --> 2NaCl _(s) +3 O_{2 (g)}
12.00 moles of NaClO₃ will produce how many grams of O₂?

Back

576 g of O₂

Front

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe What is the Ratio of moles of MgO to moles Fe?

Back

3 mol MgO / 2 mol Fe

Front

2 Na + 2 H₂O → 2 NaOH + H₂
How many grams of hydrogen are produced if 120 g of Na are available?

Back

5.2 g

Front

 SiO₂ + 3 C → SiC + 2 CO
I need to add 8.0 moles of carbon to the reaction. How many liters of carbon monoxide should I make?

Back

120

Front

Cl₂ + 2 KBr → Br₂ + 2 KCl
How many grams of potassium chloride can be produced from 356 g of potassium bromide?

Back

223

Front

B₂H₆ + 3 O₂ -->2 HBO₂ + 2 H₂O
 What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

Back

125