1. C
2. D (I’m not entirely sure)
3.energy can neither be created nor destroyed, only change forms.
4. C
5. A
6. C
I’ve researched and tried to answer these questions correctly.
The reactant is dissolved in water
A gas and a liquid are produced
Some of the muscle attached to the skeleton is voluntary and may be used for movement.
According to ideal gas equation, we know for 1 mole of gas: PV=RT
where P = pressure, T = temperature, R = gas constant, V= volume
If '1' and '2' indicates initial and final experimental conditions, we have
Given that: V1 = 100.0 kPa, T1 = 100.0 K, V1 = 2.0 m3, T2 = 400 K, P2 = 200.0 kPa
∴ on rearranging above eq., we get V2 =
∴ V2 = 4 m3