A 50.0mL flask filled with a solution of hydrogen peroxide has a total mass of 88.5 g. The mass of the flask is 16.5 g. The density of the hydrogen peroxide solution is

1.44 g/mL

Explanation:

total mass is mass of the flask plus mass of the solution

TM = Flask + H2O2

88.5 = 16.5 + x

x = 72.0 gram

density = mass/volume

H2O2 density = 72/50

= 1.44 g/mL

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)