Question

What are the Number of moles for NaCl?

Answer 1

it depends on how much mass you have.

\( \sf \Huge moles=\dfrac{mass}{Molar~mass}\)

Answer 2

I have a molar mass of 58.443 g/mol, I don't know what the mass would be

Answer 3

if you dont have a mass you can't possibly know.

Answer 4

well I know the masses of the two elements but not when you put them together

Answer 5

it would be the mass of a sample, the masses of the atoms are fixed.

the masses given would typically be in grams

Answer 6

how do you find the sample size then?

Answer 7

you'd have to be given it

Answer 8

no, I have a worksheet.
across the top of the columns it has 7 categories,
chemical name, chemical symbol, sample size, number of moles, number of molecules and volume at STP....I only have the first three columns finished. the rest I have no idea how to do

Answer 9

what other information did they give you for NaCl?

Answer 10

chemical symbol and number of moles though I don't know how they got the number of moles. they got 0.75

Answer 11

it's all fill-in type of sheet, right?

so they're gonna give you scattered data and you fill the rest.

For example, you need to find the mass using the formula i posted.

Then for the number of molecules use:


\(\sf \huge moles=\dfrac{molecules}{Avogadro's~number}\)

Answer 12

yes its a fill in sheet.

I have all of the molar mass filled in already... I don't know how to fill in sample size, number or moles or volume at stp

Answer 13

take a picture of the sheet then post it

Answer 14

How many moles NaCl in 1 gram? The answer is 0.0171107563861. I believe that is per 1 gram of NaCl though.