Chemical Knowledge Quiz
Chemical Knowledge Quiz
Test your understanding of chemistry concepts with this engaging quiz! Dive into various topics including moles, gases, and nanotechnology.
Key Features:
- Multiple choice questions
- Covers a range of chemistry topics
- Perfect for students and anyone interested in chemistry
Which of the following is used in the chemical preparation and distillation?
Pipette.
Burette.
Round_bottom flasks
The reason of the new unique properties of the Nano substance is the very large ratio between....and volume?
Surface area
Density
Mass
All The following are one-dimensional Nano substances, except..
Thin film
Nano wires
Nano shell
The number of moles of water in 36g of it is…..mol
0.5
1
2
The number of magnesium atoms in 4g of Mg Avogadros number equal....
1/6
1/4
1/2
The mass of 3.10*23 atoms of sodium is .....g Na=23
0.5
23
11.5
The mass of 0.1 mol of sodium hydroxide equals... (Na=23 O=16 H=1)
0.04g
0.4g
4g
The mass of CaO resulted from dissociating 50g of calcium carbonate CaCO3 thermally is .....g
14
28
82
The number of moles of water found in 36g of it.( H=1. O=16)
2 mol
3 mol
4 mol
The molar mass of sodium carbonate is equal....
106
98
18
The volume of 4g of hydrogen gas at STP equals......L
22.4
44.8
89.6
The mass of 44.8L of ammonia gas at STP is ......g
2
17
34
The molar mass of sulphur in its vapor state is.....amu
32
64
256
Calculate the mass of 0.5 mol of sodium carbonate
53
106
212
Calculate the number of carbon atoms found in 50g of calcium carbonate ( ca=40. C=12. O= 16)
3.01×10*23
3.01×10*24
2.65×10*23
Calculate the mass of Zinc Sulphide ZnS which is resulted from the reaction of 32g of sulphur with an excess amount of Zinc.
90g
97g
85g
Compound M(OH)3 it's molar mass= 78 find the mass of M ( H= 1. O= 16)
27g
129g
72g
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