Respuesta :

Answer:

0.134 moles

Explanation:

In order to solve this, we need to find the molar mass of Chromium, which we can see from the periodic table: it is 51.996 g/mol.

Now, we need to set up an equation to convert grams to moles:

[tex]6.97 grams*\frac{1mol}{51.996grams} =0.134mol[/tex]

Thus, the answer is 0.134 moles of Chromium.

Explanation:

Step 1:  Find how many moles

Formula → [tex]grams*\frac{1 mol}{51.996grams}[/tex]

[tex]6.97 g *\frac{1 mol}{51.996g}[/tex] ← The g's cancel and there is only moles left on top

[tex]0.13405... mol[/tex]

Answer:  Rounded - 0.13405 moles of Chromium