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Chemical quantities Flashcards | StudBud
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Chemical quantities
Chemical quantities
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Mole, gram, particles, volume calculations for the same substance.
Flashcards
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Answers
1
How would you find the molar mass of a chemical compound?
Add all atomic masses together and divide by number of atoms
Add number of atoms, then multiply by the element with the highest at. mass
Multiply each element's atomic mass by its atoms, now sum the mlts. tgether
Compounds don't have molar masses
2
What a is typically used unit for molar mass
stone/mol
lb/mol
g/mol
kg/mol
3
Whats the molar mass of fructose? (C₆H₁₂O₆)
202.2g
180.2g
90.2g
140.2g
4
Gases don't have a molar mass
True
False
5
An element existing as a diatomic molecule will influence its mass.
True
False
6
A mole's mass is always the atomic number
True
False
7
The volume of any mole is ____ Liters
3.1
2.71
2.86
22.4
8
What is a typically used unit for molar volume
quarts/mol
Gallons/mol
Liters/mol
Milliliters/mol
9
How is the partial volume of a mole converted to its number of particles?
Divide by ideal molar volume and multiply with Avogadro's number
Count the particles one by one under a microscope
divide by atomic mass and multiple by Planck's constant
Multiple atomic number by 5.14 x 1021
10
Which element has the highest molar mass
Oganesson
Californium
Einsteinium
Plutonium
11
1 mole of water has how many grams?
18.02
5.23
20
17.9
12
32g of Oxygen gas is approx. how many moles?
4 moles
1 mole
2 moles
3 moles
13
Can any mole have a negative volume or mass?
Science doesn't have an answer yet
No, that goes against fundamental laws of physics
Any negatively charged atom compound can posses negative quantities
Yes, but only synthetic elements
14
Using Avogadros number, what would you use to find the particles in any given mole
(n-4) x 2.02 x 1017
6.626 x 10-34
6.202 x 10²³
6.022 x 10²³
15
Every mole has a mass and a volume conversion
True
False
