physical changes are those changes which can be reversed in their previous form like ice to water
chemical changes are those changes which cannot be reversed in their previous form
I believe the correct answers from the choices listed above are the second and the last option. At constant pressure, the systems 2A(g) + B(g) ---> 4C(g) and 2C(g) A(s) + B(s) ---> C(g) produces work to the surroundings. <span>When a gas is evolved during a chemical reaction, the gas can be imagined as displacing the atmosphere - pushing it back against the atmospheric pressure. The work done is therefore V*P where V is the volume of gas evolved, and P is the atmospheric pressure. </span>
Answer:
Delete my comment if your gay
Explanation:
Answer:
a
Explanation:
magma is lava and lava is magma