lexlexppp lexlexppp 03-09-2020 Chemistry contestada Question 2 5 pts 80) Multiply 6.4 x 10-3 times 8.0 x 10' and express the answer in scientific notation. O 5.1 x 10-21 O 5.1 x 10-3 O 5.1x 103 O 5.1x 104 0 5.1 x 105 5 pts