Which of the following steps correctly converts 6 grams of fluorine to an equivalent number of moles of fluorine?

divide 6 by the atomic mass of fluorine.
divide the atomic mass of fluorine by 6.
subtract 6 from the atomic mass of fluorine.
multiply the atomic mass of fluorine by 6.

Divide 6 grams by the atomic mass of fluorine.

Explanation:

Number of moles = Mass / atomic mass of fluorine

Given data:

Mass of fluorine = 6 g

How to convert into moles of fluorine = ?

Solution:

Number of moles = Mass / atomic mass of fluorine

Number of moles = 6 g/  19 g/mol

Number of moles =  0.32 mol

So in order to convert the 6 g of fluorine into moles we have to divide the 6 by atomic mass of fluorine.

i can confirm that this is correct^

Explanation:

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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