Question

Hello please tell ok quickly

Answer 1

$- log_{10}(6.2 \times { 10}^{ - 19} ) = - log_{10}(6.2) + 19 log_{10}(10) \\ = 19 - log_{10}(6.2) \\ = 19 - 0.792 \\ = 18.208$
Hope it helps

Answer 2

=(-62)*(1/10^9*-10)
=(-62)*(-1/10^8)
=(-62g)*(-10^-8g)