
chemistry
Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
David Njoroge
Used 3+ times
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202 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a mole?
6.022 x 1023 particles of any substance
A small burrowing animal
A dark spot on your skin
A spy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An element's molar mass can be found on what part of an element's entry on the periodic table?
atomic number
atomic mass
group number
it can't be found on the periodic table
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these elements has the highest molar mass?
Hydrogen
Iron
Carbonate
Cobalt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You have two sealed flasks. The first flask contains 22.99 grams of solid sodium (Na). The second flask contains 200.59 grams of liquid mercury (Hg). Which flask has more moles of the indicated substance?
The first flask
The second flask
Neither.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following sets of coefficients correctly balances the above chemical equation?
__Pb(NO3)2 + __NaI ⟶
__NaNO3 + __PbI2
1:2:1:2
2:1:2:2
1:2:2:1
1:1:1:1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You have 2 moles of graphite (KC8) in your pencil. How many grams of graphite are in your pencil?
135.19 g
270.37 g
67.59 g
134 g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many grams of carbon dioxide are in 0.5 mol of carbon dioxide?
11 g
44.009 g
22.005 g
88.018 g
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