Answer:
.8379 x 10^2
Explanation:
So the molar mass of Krypton is 83.79 g/mol. To find this in scientific notation, one must move the decimal place until it is in from of your first number. However many times you moved your decimal place, should be the exponent’s number. Positive exponent if you moved the decimal to the left and negative exponent if you moved the decimal point to the right.