
mole concept
Authored by Jatin Sharma
Chemistry
11th Grade
NGSS covered
Used 1+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass of 6.02 x 1023 platinum atoms? Round to the nearest hundredths place.
30.97 g
106.42 g
140.91 g
195.09 g
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student needs 65.0 g of copper(II) chloride for an experiment. How many atoms of copper is this?
2.91 x 10^23 atoms
3.91 x 10^25 atoms
2.35 x 10^23 atoms
4.70 x 10^23 atoms
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The molecular formula for a carbon and hydrogen compound is C8H18. What is the empirical formula?
C8H18
C9H4
C18H8
C4H9
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Identify the limiting reagent when 6.00 moles HCl combines with 5.00 moles Mg to form MgCl2.
1 Mg + 2 HCl --> 1 MgCl2 + 1 H2
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
When 12 moles of O2 reacts with 6 moles of C10H8, what is the limiting reactant?
1 C10H8 + 12 O2 --> 10 CO2 + 4 H2O
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If one Monster energy drink contains 0.16 g of caffeine, how many moles of caffeine do we consume when we drink 1 can? The chemical formula for caffeine is C8H10N4O2.
194 mol
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A container with a volume of 893 L contains how many moles of air at STP?
2.5 x 10-2 mol
39.9 mol
22.4
2.7 x 10-2 mol
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