12. There is 100.0 g samples of the following compounds: NH3, N2O, HCN, N2H4, and HNO3. Which sample has the least mass percent of nitrogen? (A)NH3 (B)N2O (C)HCN (D)HNO3

17. Which of the following is true about a system at equilibrium? (A)The concentration(s) of the reactant(s) is equal to the concentration(s) of the product(s). (B) No new product molecules are formed. (C) The concentration(s) of reactant(s) is constant over time. (D)The rate of the reverse reaction is equal to the rate of the forward reaction and both rates are equal to zero.

12. There is 100.0 g samples of the following compounds: NH3, N2O, HCN, N2H4, and HNO3. Which sample has the least mass percent of nitrogen?
(A)NH3
(B)N2O
(C)HCN
(D)HNO3

相關試題

相關試卷

12. There is 100.0 g samples of the following compounds: NH3, N2O, HCN, N2H4, and HNO3. Which sample has the least mass percent of nitrogen?(A)NH3(B)N2O(C)HCN(D)HNO3

相關試題

相關試卷

12. There is 100.0 g samples of the following compounds: NH3, N2O, HCN, N2H4, and HNO3. Which sample has the least mass percent of nitrogen?
(A)NH3
(B)N2O
(C)HCN
(D)HNO3