Calculate the mass percent of solute in each solution. Calculate the mass percent of 2.77 g KCl dissolved in 52.1 g H. O. mass percent: % Calculate the mass percent of 16.3 g KNO, dissolved in 853 g H, O. mass percent: %

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

In a chemical reaction, the final amount of the products is determined by the a. universal gas law b. law of definite proportions c. air pressure d. temperature e. none of the above me