## General Chemistry (4th Edition)

(a) $2.77 × 10^{-8}$ (b) $1.82 × 10^{-3}$ (c) $1.23 × 10^{8}$ (d) $1.254 × 10^{3}$
(a) 0.000 000 0277 Find the first numbers that arent 0's 277 Next add a decimal after the first number 2.77 Multiply it by 10 to the power of how many 0's were before/after the decimal place 2.77 x $10^{-8}$ The power is -8 because there were 8, 0's in the original number that were before the decimal place (b) 0.001 82 Find the first numbers that arent 0's 182 Add a decimal after the first number 1.82 Multiply it by 10 to the power of how many 0's were before/after the decimal place 1.82 × $10^{-3}$ The power is -3 because there were 3, 0's in the original number that were before the decimal place (c) 123 000 000 Find the first numbers that arent 0's 123 Add a decimal after the first number 1.23 Multiply it by 10 to the power of how many 0's were before/after the decimal place 1.23 × $10^{8}$ The power is 8 because there were 8, 0's in the original number that were before the decimal place (d) 1254 Find the first numbers that arent 0's 1254 Add a decimal after the first number 1.254 Multiply it by 10 to the power of how many 0's were before/after the decimal place 1.254 × $10^{3}$ The power is 3 because there were 3, 0's in the original number that were before the decimal place