What is the atomic mass?

A: The sum of the protons and neutrons

B: The difference of the protons and neutrons

C: The sum of the protons and electrons

D: The difference of the protons and electrons.

How much can 97 go in to 15

When the products of a reaction are hotter than the reactants: The reaction is exothermic. The reaction is endothermic. The reactants lost internal energy. The change in enthalpy is positive.

A certain reaction is exothermic in the forward direction and has fewer molecules of gas on the product side. Which set of actions should be used to increase the yield of the products? Decrease the temperature and decrease the pressure.

What is the concentration of KCI if 10 g are dissolved in enough water to make 12 L?

The pressure of 2.73 mol of an ideal gas in an enclosed rigid container at 20.3° C is 153kPa. What is the volume of the container in liters? (R 8.31 L-kPa/mol-K)

How many calories are there in a 255 Food Calorie snack bar? a. 1 x 103 b. 2.55 x 105 c. 1.07 x 103 d. 60.9 e. none of the above

What is the greatest amount of ammonia (NH3) in moles that can be made with 4.7 mol N2 and 6.9 mol H2? Which reactant is limiting? How many moles of excess reactant will be left after the reaction?

Which one of these elements is an alkaline earth metal

Write the chemical equations for the neutralization reactions that occurred when hcl and naoh were added to the buffer solution.

Explain The relationship between engineering science and technology