# chemistry

so i know that one mole is 6.022*10^23 particles in 12g of a carbon 12 isotope. im confused in finding the amount of moles in a particular substane. there is a formula that determines it, i think its n=m/M, yet im confused with what it means..

1. 👍 0
2. 👎 0
3. 👁 131
1. # moles = grams/molar mass

48 g C. How many moles.
48/12 = 4.0 moles.

70 g Cl2. How many moles?
70/70.9 = ??

536 g AgNO3. How many moles.
536/169.9 = ??

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physical chemistry

the isotopic abundance of C-12 and c-14 is 98% and 2% by mass respectively. what would be the no. of atoms of c-14 isotope in 12g carbon sample?

asked by veer on June 18, 2014
2. ### Chemistry again

Chromium is ametal that is added to steel to improve its resitance to corrosion. Calculate both the number of miles in a sample of Cr containing 5.00 x 10^20 atms and the mass of the sample. Ok this is how I worked it. 1 mole of

asked by Chopsticks on January 6, 2009
3. ### Chemistry

Which of the following will contain more atoms: 12g of carbon or 12g of magnesium? Give a reason for your answer. Thanks

asked by Natt on September 13, 2016
4. ### Chemistry

If one mole of the compound Al4C3 has a mass of 144g and one mole of carbon has a mass of 12g, calculate the relative atomic mass of the element aluminium. 4 Al + 3 C=144 C=12 4 Al + 3 *12=144 solve for Al So C=36 which leaves 108

asked by Desmond on May 8, 2007
5. ### science

if one mole of the compound AL4C3 has a mass of 144g and mole of carbon has a mass of 12g, calculate the relative atomic mass of the element aluminium any ideas to the answer would be great thanks 4*(Al, amu)+ 3*12 = 144 Solve for

asked by brainywaney on April 20, 2007
6. ### Chemistry

if each "hydrogen" atom has a mass of 1g and each "carbon" atom has a mass of 12g what is the ratio of the mass of 1 mole of carbon to one mole of hydrogen

asked by Nick on January 25, 2011
7. ### chemistry

how many carbon particles are there in 4.25 mole of C6 H12 O6? i do not get how to solve this. my teacher said something about conversion factors but i still don't understand how u isolate the carbon from the whole compound. can

asked by maria on July 10, 2009
8. ### Chemistry+need help checking work

Using aervage atmoic masses for each of the following elements, calculate the mass, in amu (grams) A. 635 atoms of hydrogen ---> 1 mole of H = 1.01g = 6.022 x 10^23 atom 635 atom of H 1.01g/6.022 x 10^23 atom I got 1.06 x 10^-21

asked by Chopsticks on January 7, 2009
9. ### science

if one mole of the compound Al4C3 has a mass of 144g and one mole of carbon has a mass of 12g, calculate the relative atomic mass of the element aluminium. Subtract 3*12 from 144 (ie, 108) Relative atomic mass= (108/4)/12

asked by smartypants on May 18, 2007
10. ### Chemistry

A silicon chip is used in an integrated circuit of a microcomputer has a mass of 5.68 mg. How many Si Atoms are present in this chip. Okay here is how I worked it. Can someone please tell me if its right? 1 mole of Si = 28.086g =

asked by Chopsticks on January 6, 2009

More Similar Questions