One Step Stoichiometry

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Tags

NGSS.HS-PS1-7

How many grams are in 7.8 moles of NaCl?

• 476 grams

• 460 grams

• 452 grams

• 462 grams

Mole ratios are obtained from the

• balanced chemical equation

• periodic table

• molar mass

Tags

NGSS.HS-PS1-7

Using the following equation:Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)How many moles of iron can be made from 6 moles H₂?

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Tags

NGSS.HS-PS1-7

What can be determined from a balanced chemical equation?

• Mole ratio of any two substances in the reaction

• Energy released in the reaction.

• Electron configuration of all elements in the reaction.

• Mechanism involved in the reaction.

Using the following equation: Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l) How many moles of water can be made from 6 moles H₂?

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Tags

NGSS.HS-PS1-7

In the reaction 2 H₂ + O₂ → 2 H₂O what is the mole ratio of oxygen to water

• 1/2

• 2/1

• 3/4

• 4/3

Tags

NGSS.HS-PS1-7

N₂ +  3H₂ → 2NH₃ 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

• 6

• 2

• 3

• 1

Tags

NGSS.HS-PS1-7

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles

• 8 moles

• 16 moles

• 2 moles

Tags

NGSS.HS-PS1-7

Where are the numbers for a mole ratio found?

• They are part of the chemical formulas for the reactants / products.

• They are given in the problem.

• They are found on the periodic table for those elements.

• They are found as coefficients in the reaction's balanced chemical equation.