The PH of water is 7 because it contains an equal amount of h and oh- ions.
<h3><u>Answer</u>;</h3>
= 1.44 L
<h3><u>Explanation</u>;</h3>
Boyle's law states that the volume of a fixed mass of a gas is inversely proportional to its pressure at a constant temperature.
Mathematically;
<em>P α 1/V</em>
<em>PV =constant </em>
<em>Thus, P1V1 = P2V2 </em>
<em>P1 = 1.00 atm, V1 = 3.60 liters, V2 = ?, P2 = 2.50 atm</em>
<em>V2 = P1V1/P2</em>
<em> = (1× 3.6)/2.5 </em>
<em> = </em><u><em>1.44 L</em></u>
The percentage of water in the compound CaSO₄.6H₂O = 44.26%
<h3>Further explanation</h3>
Given
Compound CaSO₄. 6H₂O
Required
The percentage of water
Solution
MW CaSO₄. 6H₂O :
= 40 + 32 + 4.16 + 12.1 + 6.16
= 244
MW 6H2O :
= 12.1 + 6.16
= 108
%water = (108 : 244) x 100%
%water = 44.26
