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Alika [10]
2 years ago
7

What is a substance?

Chemistry
2 answers:
love history [14]2 years ago
4 0
The proper definition would be B. A mixture that can be separated.
hjlf2 years ago
3 0

Answer: The correct answer would be A: a uniform mixture that can’t be separated

Explanation: Google's definition is: "a particular kind of matter with uniform properties."

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The empirical mass is a whole number multiple of the molar mass true or false?​
elena-14-01-66 [18.8K]

Answer:

True

Explanation:

6 0
2 years ago
A 50.0 mL sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. What is the new v
guapka [62]

Ans: Final volume = 25.0 ml

<u>Given:</u>

Initial volume V1 = 50.0 ml

Initial pressure P1 = 20.0 atm

Final pressure P2 = 40.0 atm

<u>To determine:</u>

The final volume V2

<u>Explanation:</u>

Ideal gas equation: PV = nRT

under constant temperature, T and number of moles n we have:

PV = constant

or, P1V1 = P2V2

V2 = P1V1/P2 = 20*50/40 = 25 ml.

6 0
3 years ago
Which calculation set-up would be correct to determine the volume of concentrated hydrochloric acid (12.0 M HCl) that is require
NISA [10]
M₁ *V₁ = M₂ * V₂

12.0 * V₁ = 6.0 * 500.0

12.0 V₁ = 3000

V₁ = 3000 / 12.0

V₁ = 250 mL

hope this helps!

3 0
3 years ago
Read 2 more answers
What are the identities of iodine ,chlorine, and iodine ?
Nostrana [21]
Iodine&chlorine contain negative charge.so they are anion.When we do electrolysis those charge go to anod&become ion.
4 0
3 years ago
What information in the MSDS would be most important to know at the end of an experiment?
Mashcka [7]
Answer would be C) Disposal Procedure 
7 0
2 years ago
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