Answer: 506.6076 g
Step-by-step explanation:
We know that the molar mass of K2O is the 2*(molar mass of potassium)+molar mass of oxygen. Plugging in 39.1 and 16 respectively, we get that the molar mass of K2O is 94.2 g/mol. We need to then multiply 5.378 by 94.2 to 506.6076 g