2H2(g) + O2(g)
+ 2H2O(1) + 137 kcal
How many grams of hydrogen are required to produce 733 kilocalories of heat?
10.8 g
21.6 g
none of these
1.00 x 105 g

Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.