Question

b)The density of mercury is 13.6g cm^-3.Find the mass of 4.7*10^-5 cm^3 mercury.Give your answer correct to 2 significant figures. @hartnn @Directrix @ganeshie8 @Michele_Laino @mathmath333 @Jhannybean

Answer 1

please, note that:
mass = density* volume

Answer 2

okay @Michele_Laino

Answer 3

u mean like this \[13.6\times4.7\times10^-5\] @Michele_Laino

Answer 4

that's right!

Answer 5

so it will be \[1.36\times10^1\times4.7\times10^-5\]

Answer 6

\[=(1.36\times4.7)\times10^-4\]

Answer 7

ok!

Answer 8

\[=6.392\times10^-4\]

Answer 9

better is 6.4

Answer 10

\[6.4*10^{-4}\]

Answer 11

okay

Answer 12

thnx @Michele_Laino

Answer 13

thanks! @MARC_