Density question with finding the number of atoms in Iron - The Density is 7.87g/cm^3 , and the average mass for a single iron atom is 9.28*10^-23g .
How many iron atoms are present in a iron bar whose dimensions are 2.00 cm * 3.00 cm * 8.00 cm ?
Working with molality and mole fraction - 0.292g of NaCl is dissolved in 200ml of water. Calculate the molality and molefraction of the solute in the solution.
Molecular weight of NaCl = 58.5 g/mol
Avagadro number - How do you do this problem? What is the number of nitrogen atoms contained in 9.40 g of N2O3
Find Number of Atoms Given Grams ... - How many atoms are there in 36.20 grams of P4 (mass of one mole of P = 30.97 grams)?
a. 1.746 x 10 ^23 atoms
b. 7.040 x 10 ^23 atoms
c. 1.746 x 10 ^22 atoms
d. 7.040 x 10 ^22 atoms