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gogolik [260]
3 years ago
6

Sam and Jane have been investigating the amount of copper sulphate that can be dissolved in water at different temperatures .The

y added copper sulphate till it could not be dissolved any further and also measured the mass of copper. The results are below. What conclusions can you make from results?

Chemistry
1 answer:
MAXImum [283]3 years ago
8 0

Answer:

This question is so confusing, I'm sorry

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If a gas has a volume of 750 mL at 25oC, what would the volume of the gas be at 55oC?
blagie [28]

Answer:

The answer to your question is     V2 = 825.5 ml

Explanation:

Data

Volume 1 = 750 ml

Temperature 1 = 25°C

Volume 2= ?

Temperature 2 = 55°C

Process

Use the Charles' law to solve this problem

                V1/T1 = V2/T2

-Solve for V2

                V2 = V1T2 / T1

-Convert temperature to °K

T1 = 25 + 273 = 298°K

T2 = 55 + 273 = 328°K

-Substitution

                V2 = (750 x 328) / 298

-Simplification

                V2 = 246000 / 298

-Result

                V2 = 825.5 ml

             

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3 years ago
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8 0
4 years ago
Calculate the amount of nacl needed to prepare 50 ml of 0.9% nacl solution and 20% nacl solution
Westkost [7]
Your answer would be, 
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What is the kinetic molecular model?
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Answer:

The kinetic theory of gases describes a gas as a large number of submicroscopic particles, all of which are in constant, rapid, random motion. The randomness arises from the particles' many collisions with each other and with the walls of the container

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3 years ago
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