1 mol KMnO₄ contains 4 mol O, which has a molar mass of about 15.999 g/mol. Then the mass of O in the sample is
(4 mol) (15.999 g/mol) ≈ 63.996 g
The answer is C. You should check websites for student discounts! They offer some great options. :) Hope this helps.
Answer:
- Ribeye steak dinner ≈ $16.01
- Grilled salmon dinner ≈ $19.91
Explanation:
- <em>Number of ribeye steak dinners sold = x</em>
- <em>Number of grilled salmon dinners sold = y</em>
Create two equations showing the amount sold and earned each day:

Solve the system of equations:
