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zhannawk [14.2K]
4 years ago
11

Why is it important that the primary standard chemical be non-hygroscopic and pure? Why is it important to dry the primary stand

ard to a constant weight?
Chemistry
1 answer:
sammy [17]4 years ago
4 0

Answer:

It is extremely important for the primary standard chemical to be non – hygroscopic and pure and to also have a constant weight because you don't want any moisture or any impurities to alter the stoichiometric point in the reaction

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Equation 3x-5=-2x+ 10?<br> O<br> 0<br> x= 5<br> -5 = x<br> -15 = -5x<br> -5x = 15
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are those the answer choice

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3 years ago
what is the best course of action if solid material remains in the flask after the heating step of recrystallization
lys-0071 [83]

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filter the hot mixture.

Explanation:

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4 years ago
Explain why there is a difference in the thickness of the crust between the side of the moon facing the Earth and the side that
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Explanation:

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3 years ago
Competition is rivalry between individuals for a particular resource.
djyliett [7]

Answer:

True

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3 years ago
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Using the information from STP or SATP conditions determine the value of the ideal gas constant.
Dovator [93]

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0.0821 atm.L/Kmol

Explanation:

At stp, the values temperature, pressure and volume is given below:

Pressure (P) = 1 atm

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Volume (V) = 22.4 L

At stp, 1 mole of a gas occupy 22.4L.

Number of mole (n) = 1 mole

Gas constant (R) =?

The ideal gas equation is given below:

PV = nRT.

With the above equation, the gas constant R can be obtained as follow:

1 atm x 22.4L = 1 mole x R x 273K

Divide both side by (1 mole x 273 K)

R = (1 atm x 22.4L) / (1 mole x 273 K)

R = 0.0821 atm.L/Kmol

Therefore, the gas constant is 0.0821 atm.L/Kmol

4 0
4 years ago
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