Chem ! using the average atomic mass, calculate the number of atoms present in 1.2 ml of liquid mercury. (density=13.6g/ml)

So let's convert this amount of mL to grams:

Then we need to convert to moles using the molar weight found on the periodic table for mercury (Hg):

Then we need to convert moles to atoms using Avogadro's number:

So now we know that in 1.2 mL of liquid mercury, there are present.

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)