Moles Stoichiometry

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?   P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

• 6:4

• 4:6

• 1:3

• 3:1

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

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

• 6.7 mol

• 1.0 mol

• 10.1 mol

• 4.5 mol

Tags

NGSS.HS-PS1-7

True or False. You must convert grams to moles to do stoichiometry.

• True

• False

Which of the following best describes the mole concept?

• A measure of mass

• A measure of volume

• A measure of the amount of substance

• A measure of temperature

Tags

DOK Level 1: Recall

• 22 g

• 44 g

• 66 g

• 88 g

Tags

SCH3U.D.2.5

How many atoms are there in 2 moles of helium (He)?

• 1 mole

• 2 moles

• 4 moles

• 8 moles

Tags

SCH3U.D.2.5

• 1 mole

• 2 moles

• 0.5 moles

• 4 moles

Tags

DOK Level 2: Skill/Concept

Tags

SCH3U.D.2.5