Calculate moles/grams/atoms?

How would I do these? (as in what is the formulas to use...)





Calculate the number of moles when given grams


ie: 32.4g Na


Calculate the number of grams when given moles


ie: 2.34g moles Mg


Calculate the number of atoms when given moles


ie: 3.42 moles Mg

Calculate moles/grams/atoms?
**The atomic masses of Na = 23 , Mg = 24





To calculate for moles, divide the given grams by the element's atomic mass.





So, 32. 4 g Na / 23 = 1.4 moles





Given the number of moles, multiply by its atomic mass to find the given grams.





So, 2.34 moles * 24 = 56.16 g





Given the number of moles, multiply by Avogadro's number (6.02 * 10^23)





So, 3.42 moles * Avogadro's number = 2.06 * 10^24
Reply:sila a i have also same moles/grams/atoms problems if you got an right answer please e-mail me the answerer who answer your question. my e-mail is-hritik17kr@yahoo.co.in





Thanks

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