Posted by Mely on Friday, September 10, 2010 at 12:08am.
Calculate the mass, in grams, of each of the following.
a) 1.2×10^23 gold atoms
b) 2.78×10^22 helium atoms
c) 2.0×10^23 lead atoms
d) 7.6×10^21 uranium atoms

chemistry  DrBob222, Friday, September 10, 2010 at 12:16am
There are 6.022 x 10^23 atoms in 1 mole; therefore, # moles = 1.2 x ^23/6.022 x 10^23 = ??
Then moles = grams/molar mass. Solve for grams.

chemistry  Haley, Wednesday, September 7, 2016 at 11:51pm
A.) 65g
B.)0.187g
C.)79g
D.)3g
Answer This Question
Related Questions
 chemistry  what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...
 chemistry  what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...
 chemistry  what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...
 ap chem  A mole of helium gas contains 6.02x10^23 helium atoms. How many helium...
 chemistry  calculate number of atoms in 4.67 mol of Ca(NO3)2 I got: 2.81 X 10^...
 chemistry  How many atoms of carbon are needed to produce 0.45 mol Al? 3C + ...
 chemistry  How many atoms are in 3.14 mol of methane (CH4)? A. 7.56 x 1023 ...
 chemistry  Calculate the mass, in kg, of each sample.9.62×1026 cadmium atoms. ...
 General Chemistry  Calculate the number of C atoms, H atoms, and O atoms, in 1....
 General Chemistry  Calculate the number of C atoms, H atoms, and O atoms, in 1....
More Related Questions