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AlladinOne [14]
3 years ago
5

How many significant figures are in 31400

Chemistry
1 answer:
mr_godi [17]3 years ago
5 0

Answer: The Answer Is 3!

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Its 470mg k dude or dudette
6 0
4 years ago
TRUE OR FALSE
FinnZ [79.3K]

During all chemical reactions, the mass of the products is never equal to the mass of the reactants.

- FALSE

Mass is sometimes lost in chemical reactions.

- FALSE

The Law of Conservation of Mass states that mass is not conserved.

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3 0
3 years ago
How many grams is 5.4x10 to the 23 molecules of al2o3?
8090 [49]

Answer:

91.49 grams

Explanation:

No of molecules = no of moles × Avogadro's number

No of moles = No of molecules / Avogadro's number

Number of moles = 5.4×10^23/6.02×10^23

Number of moles = 0.897 moles of Al2O3

Number of moles = mass in gram / molar mass

Mass in gram = number of moles× molar mass

Mass in gram = 0.897× 102

91.49 grams

5 0
3 years ago
A sample of argon (Ar) gas has a volume of 7.31 L at a pressure of
Pie

Answer:

17.1 L

Explanation:

P1V1/T1  =  P2V2/T2        T is in K

P1V1/T1 * T2/P2 = V2

735 * 7.31 / (45+273.15)  * (55+ 273.15)/325 = V2

V2 = 17.1 L

3 0
2 years ago
What happens to the atoms and molecules in a substance as its temperature increases?
lana [24]
The molecules and atoms vibrate faster. As atoms vibrate faster the space between atoms also increases.
5 0
3 years ago
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