How many seconds are there in the month of february, which has twenty-eight days in a common year?
3.24 x 10-6 s
2.42 x 106 s
6.72 x 102 s
4.2 x 103 s

What is the molar mass of ca(cio4)2

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?

Convert .347 kilometers to miles show your work