O iodine (I) because scientists use it for a lot of experiments
Avogadro's constant is the number of atoms of carbon-12 in 12g of
carbon-12.
atoms present equals avogadro's constant times number of moles for that substance. Type of substance does not change the number of atoms if you are given the quantity of moles, therefore the fact that it is sodium does not change the value.
<span>atoms present equals avogadro's constant times number of moles
</span>=6.023x10^23 x 4.0
=2.4x10^24
C6H8 + 8O2 ===> 6CO2 + 4H2O ... balanced equation
moles hexane = 54.3 g x 1 mol/80 g = 0.679 moles
moles O2 = 78.5 g x 1 mol/32 g = 2.45 moles
Limiting reactant is Oxygen (O2) since need 8 x as much as C6H8
Theoretical yield of CO2 = 2.45 mole O2 x 6 mole CO2/8mole O2 = 1.84 moles CO2
1.84 moles CO2 x 44 g/mol = 80.9 g (answer to 3 sig figs)
depending on if your question possesses this values
KHP is an acronym which stands for potassium hydrogen phthalate. It is an acidic salt which is white crystalline powder at room temperature. When in solution it is colorless. It has a chemical formula of C8H5KO4. Molar mass of a compound is the sum of the masses of all the atoms involved in the structure of the compound. So, we need the atomic masses of the elements involved. We do as follows
C = 12.01 g/mol x 8 = 96.02 g/mol
H = 1.01 g/mol x 5 = 5.05 g/mol
K = 39.10 g/mol x 1 = 39.10 g/mol
O = 16 g/mol x 4 = 64 g/mol
Adding, we will have 204.17 g/mol. This would be the molar mass of KHP.