Answer:

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

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

Substitute the values into the formula.

Divide.

This is just about equal to 19,320 kg/m³, so choice A is correct.
Answer:
solid ; liquid and gas........
Answer:
3.18 mol
Explanation:

n(CO2) = mass/ Mr.
= 25.5 / 16
= 1.59 mol
As per the equation above,
n(LiOH) : n(CO2)
2 : 1
∴ 3.18 : 1.59
The percent by mass sugar of a solution : 11.07%
<h3>Further explanation</h3>
Given
mass of sugar = 12.45 g
mass of water = 100 g
Required
The percent by mass
Solution
Mass of solution :

Percent mass of sugar :
