00 Hydrogen peroxide decomposes to produce water
and oxygen. The equation is:
2H,02(g) → 2H2O(g) + O2(g)
Using the following values, calculate the heat change
for the reaction and say whether it is exothermic or
endothermic. Bond energies:
0-0 = 144 kJ/mol
0-H = 464 kJ/mol
O=0 = 498 kJ/mol

The minerals found in bones are deposited by living cells called

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?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %