On the celsius scale, at what temperature does water boil?
a. 212��
b. 0��
c. 32��
d. 100��

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?