Carbon dioxide (co2) is a gaseous compound. calculate the percent composition of this compound. answer using three significant figures. what is the percent by mass of carbon? %

Carbon dioxide is a gaseous molecule made up of the elements, C and O. Each mole of carbon dioxide has one mole C and two mole oxygen atoms.

Molar mass of carbon dioxide ()=

Percentage by mass of carbon =

Percentage by mass of oxygen =

Therefore C is 27.3 % and O is 72.7 % by mass in 1 mol CO

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

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