What's the definition of fossil

Calculate the [H3O+] of solutions a and b; calculate the [OH-] solutions c and d. 9. pH = 2.76 10. pH = 3.65 11. pOH = 3.65 12. POH = 6.87

A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 15 students, and each experiment needs 50 mL of solution.

What is the final concentration of a solution prepared by diluting 35.0 ml of 12.0 m hcl to a final volume of 1.20 l? what is the final concentration of a solution prepared by diluting 35.0 ml of 12.0 m hcl to a final volume of 1.20 l?

Sam prepares a solution of sodium chloride with a concentration of 8 g/dm³. If he only used 2g of sodium chloride, what volume of water did he dissolve it in, in cm³?

The ph of a 0.55 m aqueous solution of hypobromous acid, hbro, at 25.0°c is 4.48. what is the value of ka for hbro?

What sort of nucleophile does NADH supply?

Ammonia is a weak base. if the initial concentration of ammonia is 0.150 m and the equilibrium concentration of hydroxide is 0.0016m, calculate kb for ammonia.

Convert 1.140atm to kPs

Draw the condensed structural formula for the ammonium salt formed when lidocaine reacts with hcl.

The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element remains?