CHEMISTRY HELP PLEASE
how do you determine what unit to put k in (rate law)?

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount