Chemistry Final Exam (CHM 151 Practice Final Exam) (Misssing Qs 40, 41, 53,
56 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
, How many significant figures are there in the result of 3
5..745
How many significant figures are there in the answer 4
when 9.021 is added to .82
How many significant figures are there in 0.602? 3
How many significant figures are there in 0.37200 5
The density of bromine liquid is 3.12 g/ml. Since it is a 9.01 3.12g/1 ml = 28.1 g/x ml
liquid it is easier to measure in a graduated cylinder that
to weigh out in a balance. If we needed 28.1 g of Br2 for a
reaction, what volume would we measure out?
How many protons , neutrons, and electrons are in 37Cl Protons 17
17 electrons 17
neutrons 20
What is the formula for Aluminum Sulfide Al3S2
Name this compound: Pb(CO3)2 Lead(II) Carbonate
How many moles are in 12.0 g of P atoms? .387 mol gr/me 12/30.97=0.387
How many moles of mercury are in 7.8 X 10^19 Hg atoms 1.66 x 10 ^-5 atoms / avagadro's #
What is the mass of 7.80 x 10 ^18 Carbon atoms? a (Carbon atoms/ avagadros #) X molecular wt
a-1.56 X 10^4
b-1.3 X 10^-5
c-9.36 x 10^19
d-6.5 X 10^17
56 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
, How many significant figures are there in the result of 3
5..745
How many significant figures are there in the answer 4
when 9.021 is added to .82
How many significant figures are there in 0.602? 3
How many significant figures are there in 0.37200 5
The density of bromine liquid is 3.12 g/ml. Since it is a 9.01 3.12g/1 ml = 28.1 g/x ml
liquid it is easier to measure in a graduated cylinder that
to weigh out in a balance. If we needed 28.1 g of Br2 for a
reaction, what volume would we measure out?
How many protons , neutrons, and electrons are in 37Cl Protons 17
17 electrons 17
neutrons 20
What is the formula for Aluminum Sulfide Al3S2
Name this compound: Pb(CO3)2 Lead(II) Carbonate
How many moles are in 12.0 g of P atoms? .387 mol gr/me 12/30.97=0.387
How many moles of mercury are in 7.8 X 10^19 Hg atoms 1.66 x 10 ^-5 atoms / avagadro's #
What is the mass of 7.80 x 10 ^18 Carbon atoms? a (Carbon atoms/ avagadros #) X molecular wt
a-1.56 X 10^4
b-1.3 X 10^-5
c-9.36 x 10^19
d-6.5 X 10^17
