Calculate the mass of atoms of carbon and 3 molecules of hydrogen
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Ответ:
The mass of atoms of carbon and 3 molecules of hydrogen : 18 g/mol
Further explanationAn atomic mass unit ( amu or "u") is a relative atomic mass of 1/12 the mass of an atom of carbon-12.
The molar mass(molecular mass-formula mass-molecular weight(MW)) of a compound is the sum of the relative atomic mass (Ar) of the constituent elements of the compound
Can be formulated :
M AxBy = (x.Ar A + y. Ar B)
The mass of atom of Carbon(C)⇒Ar = 12 g/mol
The mass of 1 molecule of Hydrogen - H₂(MW) : 2 g/mol
The mass of 3 molecules of Hydrogen : 3 x 2 = 6 g/mol
So the mass of atoms of carbon and 3 molecules of hydrogen :
Ответ:
87 ÷ 0.45
= 193.333… lbs
i don’t know how many significant figures you have to do but if it’s 3 significant figures then the answer is 193lbs
lbs = pounds