How many gmole of chromium II hydroxide?

Answer 1

So you have 2 moles of Chromium (Cr). Use equation moles=mass (in grams)/RMM.

The bottom can be called Relative Molecular Mass (RMM), or Relative Atomic Mass (RAM) depending on the situation. Chances are you know it as Molar mass. You can call it that too.

Using moles= mass (g)/RMM --> 2 moles = mass (g)/51.996 --> 2 x 51.996 = the mass in grams of Chromium --> 103.992g in 2 moles of Chromium.

Answer 2

about 18 moles