time is direct propotinally to rate of chemical reaction .explain if time is negretted and temperature remain costant?​

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Which element is least likely to undergo a chemical reaction

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?