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2 years ago

Brainiest plsss helpp

Chemistry

2 answers:

ddd [48]2 years ago

6 0

Answer:

A) 19230 kg/ m3

Explanation:

divided it's mass by its volume ti get it's density

500/0.026 = 19230

svlad2 [7]2 years ago

3 0

Answer:

$\boxed {\boxed {\sf A. \ 19,320 \ kg/m^3}}$

Explanation:

We want to find the density. The formula is mass over volume.

$\rho = \frac{m}{v}$

The mass is 500 kilograms. The volume is 0.026 cubic meters.

$m= 500 \ kg \\v=0.026 \ m^3$

Substitute the values into the formula.

$\rho= \frac{ 500 \ kg}{ 0.026 \ m^3}$

Divide.

$\rho = 19230.7692 \ kg/m^3$

This is just about equal to 19,320 kg/m³, so choice A is correct.

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irinina [24]

Answer:

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Explanation:

Hello.

In this case, since the normal boiling point of X is 117.80 °C, the boiling point elevation constant is 1.48 °C*kg*mol⁻¹, the mass of X is 100 g and the boiling point of the mixture of X and KBr boils at 119.3 °C, we can use the following formula:

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Whereas the Van't Hoff factor of KBr is 2 as it dissociates into potassium cations and bromide ions; it means that we can compute the molality of the solution:

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Best regards.

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