An atom has a mass number of 25 and 13 neutrons. what is the atomic number of this atom? express your answer as an integer.

If you dilute 16.0 ml of the stock solution to a final volume of 0.310 l, what will be the concentration of the diluted solution

Which pure substance can be classified as an element?

What are nucleotides?

Which statement is true about a reversible reaction? It has equal mass of all reactants. It produces salts from acids and bases. It has equal number of products and reactants. It results in an equilibrium mixture of reactants and products.

What volume of 6.00 m naoh would be required to increase the ph to 4.93?

Action - reaction forces don't cancel each other. A. True B. False

An equilibrium is dynamic. True False

In a lab, a student dissolves 6.9 g of sodium chloride (NaCl) in 125 g of water (H2O). What is the molality concentration of the solution?

Audrey is driving 50 miles in 2 hours what is her average speed?

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?