Please help me with these chemistry questions. Equations to solve the problem
number of moles = given mass /gram formula mass
Molarity = moles of solute / liter of solution​

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers