Answer:
144.7×10^-8g of tin
Explanation:
Recall from Avogadro's law that the number of elementary entities (atoms, molecules, ions etc) in one mole of a substance is equal to the Avogadro's number which has a numerical equivalent of 6.02×10^23.
1 mole of tin has a mass of 119g
Hence 119g of tin has 6.02 ×10^23 atoms of tin
x g of tin will have 7.32x10^15 atoms of tin
x= 7.32x10^15 × 119/ 6.02 ×10^23
x= 144.7×10^-8g of tin
Answer:
The mass of Sn in 7.32 *10^15 atoms is 1.43*10^-6 grams
Explanation:
1 mole = 6.02 *10^23 atoms (Avogadro's constant)
6.02 *10^23 atoms = 1 mole
7.32*10^15 atoms = (7.32*10^15 / 6.02 *10^23) moles of Sn
= 1.22 *10^-8 atoms of Sn.
The relationship between umber of moles and mass is thus;
n = m / mm; where m = mass, mm = molar or atomic weight, n = number of moles
m = n * mm
mm of Sn = 118g/mol
m = 1.22 *10^-8 * 118
m = 0.000001403 g
m = 1.43 *10^-6 g
The mass of Sn in 7.32 *10^15 atoms is 1.43*10^-6 grams
