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Moles
Moles
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StudBud Administration
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Grade 11 chem project by Ellen and Rebecca. Please play with a periodic table on you!
Flashcards
15 cards
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Practice quiz
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Host live
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Questions
15
Answers
1
What is the volume of 0.045 moles of oxygen gas at SATP?
1.12mL
3.5L
1.12L
0.98L
2
How many molecules are in 1 mole?
6.02x1023
2.06x1023
6.02x1024
6.02x10-23
3
If the initial volume is 34mL at 27*C, what is the new volume if the temp. rises 5*C?
36mL
35mL
32mL
33mL
4
2.00mL of water is added to 4.00g of powder. The final volume is is 3.00mL. What is the %(m/V)?
133%
75%
100%
133.3333%
5
Calculate the mass of 2.75 mol of nickel.
161.4g
158g
158.7g
161g
6
What is the temperature in Kelvin of a gas with these conditions: 200kpa, 5.00L, 0.34mol.
401K
336K
355K
354K
7
The molarity of a substance is is 25m/L. If you have 2.34mols, what is the volume in mL?
103.2mL
94mL
93.6mL
0.093mL
8
If 75.0g of NH
4
Cl and 50.0g of CaO react, what mass of NH
3
should form? CaO+NH
4
Cl=CaCl
2
+H
2
O+NH
3
25.6g
22.7g
23.9g
24g
9
How many moles are in 3 molecules of thorium?
5x10-24 mol
5x10-22 mol
4x10-24 mol
4.98x10-24 mol
10
At STP, how many mols are there in 47.2L of nitrogen gas?
3.67mol
2.11mol
1.87mol
0.475mol
11
What is the mass of 0.345mols of oxygen gas?
12.0g
0.0115g
11.1g
11.0g
12
If you had 13.4L of hydrogen gas at 104kPa, how many L would you have at 93.6kPa?
15L
13.8L
14.9 L
14.888888888 L
13
How many moles are in 4.7g of silver nitrate?
2.8x10-2 mol
41.7mol
3.6x10-3 mol
2.766x10-2 mol
14
What is the molar mass of permanganate?
118.9356g/mol
88.3026g/mol
134.73g/mol
102.9362g/mol
15
What volume of O
2
gas at 95.0kPa and 20.0*C would be formed from the decamp of 50.0L of H
2
O (g)
23.7L
25.0L
25L
26.4L
