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Snowcat [4.5K]
3 years ago
5

Pure substances contain only one type of a. Atoms only. B. Molecules only. C. Atoms or molecules. D. Mixture.

Chemistry
2 answers:
hammer [34]3 years ago
6 0

Pure substances contain atoms only. You cannot break down a pure substance.  An element is always uniform all the way through. An element CANNOT be separated into simpler materials except during nuclear reactions.

Nesterboy [21]3 years ago
3 0
A. Atoms only. An element cannot be separated into simpler materials
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5 0
3 years ago
What is the mass of a sample of alcohol (specific heat = 2.4 J/gC), if it requires 4780 J of heat to raise the temperature by 5.
insens350 [35]

The mass of a sample of alcohol is found to be = m = 367 g

Hence, it is found out that by raising the temperature of the given product, the mass of alcohol would be 367 g.

Explanation:

The Energy of the sample given is q = 4780

We are required to find the mass of alcohol m = ?

Given that,

The specific heat given is represented by = c = 2.4 J/gC

The temperature given is ΔT = 5.43° C

The mass of sample of alcohol can be found as follows,

The formula is c = \frac{q}{mt}

We can drive value of m bu shifting m on the left hand side,

m = \frac{q}{ct}

mass of alcohol (m) = \frac{4780}{(2.4)( 5.43)}

m = 367 g

Therefore, The mass of the given sample of alcohol is

m = 367g

It requires 4780 J of heat to raise the temperature by 5.43 C in the process which yields a mass of 367 g of alcohol.

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3 years ago
At what height the acceleration due to gravity of the earth become half ?​
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What is the molar mass of CaCl2?
alekssr [168]
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1 m = 100cm...
1cm = (1÷100) m
So 45.5 cm = 45.5 ×(1÷100) =....

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3 years ago
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