Question

How would you Calculate the mass of 0.510 moles of Al(NO3)3. Use a molar mass with at least as many significant figures as the data given. g

Answer 1

Someone please help!!!!!

Answer 2

do you know how to calculate the molar mass of Al(NO3)3?

Answer 3

no i dont

Answer 4

do you have a periodic table?

Answer 5

yeah

Answer 6

find the atomic mass of the Al, N and O, it is usually a number with several decimal places such as 25.456

Answer 7

yeah okay i know that

Answer 8

what do i do after that?

Answer 9

the formula Al(NO3)3 is telling you that you have one atom of Al, 3 of N and 9 of O.
then multiply the atomic mass of N by 3 and the atomic mass of O by 9 and add all the values
Al+ 3N +9 O =

Answer 10

thats all?

Answer 11

that is the first part, then that is the mass of one mole and you have to calculate the mass of 0.510 moles, so you have to multiply that value by 0.510.
Remember finally express the value with 3 significant figures

Answer 12

Thank you!!!! :D