Quiz on Molar Mass and Elements to fluid mechanics
Authored by Mohamed Sukri Mat Ali
Engineering
University
Used 2+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about the molar mass of water?
It is less than 18 g/mol
It is exactly 18.01528 g/mol
It is more than 20 g/mol
It is equal to the molar mass of oxygen
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
One liter of water contains 55.55 moles of water molecules. Calculate the mass of the water.
1000 (g)
5500 (g)
1801 (g)
1.2 (g)
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Molar mass air 28.96 g/mol and 1 liter of air at room temperature and pressure is 0.042 moles. Calculate density air.
1000 (kg/m3)
1.2 (kg/m3)
120 (kg/m3)
1200 (kg/m3)
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The size of water molecule is ~0.28nm. Calculate density of water. Mr = 18.01528 g/mol. No Avo =6.022x10^23
1000 (kg/m3)
1.2 (kg/m3)
6022 (kg/m3)
325 (kg/m3)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The average diameter of air molecule is 4 angstrong (10^-10 m). Calculate density air. Mr = 28.96g/mole, Avo=6.022x10^23
179 (kg/m3)
28.96 (kg/m3)
1.2 (kg/m3)
6022 (kg/m3)
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