K12? Nice! Eh. Idk, I will comment the answer when I get it
The answer is c) Electrical energy
Answer:
Explanation: n=m/M(molar mass)
n=24.3 grams/(16+2x1.008)grams/moles(molar mass of H2O)
n=24.3grams/18.016grams/moles
n=1.35moles
Answer:
8.68 L is the new volume
Explanation:
You use Boyle's law for this.

= first pressure
= second pressure
= first volume
= second volume
Convert pressure from atm to mmHg (use same units):
5.97 x 760 = 4537.2 -> 4.54 x 10³
...maintain 3 significant figures in calculation, and round as needed...
(4.54 x 10³ mmHg)(2.79 L) = (1460 mmHg)(
)
(4.54 x 10³ mmHg)(2.79 L) / (1460 mmHg) =
= 8.68 L
Hope this helps :)