[melRoberts555_Bio]

Hello people! I was wondering if you could help me solve this problem. I know it must be simple  but I am new in this whole analytical chemistry and I feel a bit confused- I would appreciate it

Problem:

1. Calculate the number of millimoles contained in 500 mg of BaCrO₄

2. Calculate the number of grams that would have to be dissolved and diluted to 100 mL to prepare a 0.200 M solution.

[Borek]

Please read the forum rules. You have to show your attempts at answering the question/solving the problem to receive help, it is a forum policy.

What formulas combining molar mass, mass and number of moles do you know?