## Introductory Chemistry (5th Edition)

a) 6.974 x $10^{9}$ b) 1.344 x $10^{9}$ c) 1.1254 x $10^{7}$ d) 4.487 x $10^{6}$
a) The initial number must have the decimal moved to the left 9 times, because we move it to the left, the exponent is going to be positive and the answer is 6.974 x $10^{9}$ b) The initial number must have the decimal moved to the left 9 times, because we move it to the left, the exponent is going to be positive and the answer is 1.344 x $10^{9}$ c) The initial number must have the decimal moved to the left 7 times, because we move it to the left, the exponent is going to be positive and the answer is 1.1254 x $10^{7}$ d) The initial number must have the decimal moved to the left 6 times, because we move it to the left, the exponent is going to be positive and the answer is 4.487 x $10^{6}$