What is the ph of a solution prepared by mixing 50.00 ml of 0.10 m methylamine, ch3nh2, with 20.00 ml of 0.10 m methylammonium chloride, ch3nh3cl? assume that the volume of the solutions are additive and that kb = 3.70 × 10-4 for methylamine

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?

Examine the false statement. compounds are the smallest unit of an element that occur most commonly in nature. select the rewording of the statement that is true. a: atoms are the smallest unit of an element that commonly occur in nature. b: molecules are the smallest unit of an element or compound that commonly occur in nature. c: molecules are the smallest unit of a compound that occur on the periodic table. d: compounds are the smallest unit of an element that occur on the periodic table

Can anyone answer these questions? ? i need it before 1: 00pm today