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WorksheetsChemistry 1: Fourth Quarter EC Quiz
Total questions: 9
Worksheet time: 14mins
How many significant figures in 709,050?
6
3
5
4
The density of a substance is 3.0g/cm^3 and the volume is 23.0cm^3, what is it's mass?
7.67
69.0
54
.13
Which two subatomic particles weight the same?
Proton and electron
proton and neutron
neutron and electron
Name the following compound. Au2S3
gold(II)sulfate
gold sulfate
gold sulfide
gold(III)sulfide
Balance the following chemical equation.
KI + Pb(NO3) = KNO3 + PbI2
2KI + Pb(NO3) = 2KNO3 + PbI2
2KI + 2Pb(NO3) = 2KNO3 + 2PbI2
2KI + 1Pb(NO3) = 2KNO3 + 1PbI2
Classify the following chemical reaction.
Cr + Fe(NO3)2 = Fe + Cr(NO3)3
synthesis
single replacement
decomposition
double replacement
How much does 7.2x10^24 molecules of CaCO3 weigh?
6.02x10^23g
1197.08g
1.197x10^24
Au2S3 + 3H2 = 2Au + 3H2S
If 382.0g of H2 are reacted, how may g of H2S will be produced?
201.32g
6582.0g
6445.21g
84.63g
Find how much 18L of He gas weighs with 634mmHg pressure, at 45 degrees Celsius.
.577g
4.00g
2.308g
14.20g
