What Are Mole Ratios
Authored by Charles Martinez
Chemistry
10th - 12th Grade
NGSS covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Mole Ratios used for conversions are derived from:
the molar mass of the reactants in the balanced chemical equation
the coefficients of the balanced chemical equation
the subscripts of the products in the balanced chemical equation
the group number of each element in the balanced chemical equation
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the missing coefficients for the unbalanced equation below?
Cr(s) + Fe(NO3)2(aq) → Fe(s) + Cr(NO3)3(aq)
2,3,3,2
1,3,3,1
2,3,2,3
2,3,1,2
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are the missing coefficients for the unbalanced equation below?
AlPO4 + Ba(OH)2 → Al(OH)3 + Ba3(PO4)2
1,3,2,3
2,3,2,3
3,2,3,1
2,3,2,1
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the mole ratio of Ba(OH)2 to AlPO4?
AlPO4 + Ba(OH)2 → Al(OH)3 + Ba3(PO4)2
3 mol Ba(OH)2 / 2 mol AlPO4
1 mol Ba(OH)2/ 1 mol AlPO4
2 mol Ba(OH)2/ 3 mol AlPO4
1 mol Ba(OH)2/ 3 mol AlPO4
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the mole ratio of Mg to MgCl2?
Mg(s) + HCl(aq) → MgCl2(aq) + H2(g)
2 mol Mg/ 1 mol MgCl2
1 mol Mg/ 2 mol MgCl2
1 mol Mg/ 1 mol MgCl2
2 mol Mg/ 2 mol MgCl2
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Mg(s) + HCl(aq) →MgCl2(aq) + H2(g)
The reaction of 2.5 mol of HCl will produce ______ mol of MgCl2.
2.5
1.25
5.0
1.0
Tags
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
If there are 2 moles of oxygen available, which mole ratio will tells how much water is produced?
C3H8 +5O2 → 3CO2 + 4H2O
4 mol H2O/ 5 mol O2
5 mol O2/ 4 mol H2O
2 mol O2/ 4 mol H2O
4 mol O2/ 2 mol H2O
Tags
NGSS.HS-PS1-7
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