<span>5.506x10^23 atoms
First, determine the molar mass of Calcium Nitrate [ Ca(NO3)2 ]. Look up the atomic weights of the involved elements.
Atomic weight calcium = 40.078
Atomic weight nitrogen = 14.0067
Atomic weight oxygen = 15.999
Molar mass Ca(NO3)2 = 40.078 + 2 * 14.0067 + 6 * 15.999 = 164.0854 g/mol
Determine the number of moles of Ca(NO3)2.
16.67 g / 164.0854 g/mol = 0.101593439 mol
Now multiply by the number of atoms in Ca(NO3)2 which is 9. So
9 * 0.101593439 = 0.914340947
Finally, multiply by avogadro's number. Giving:
0.914340947 * 6.0221409x10^23 = 5.50629001x10^23
Round the result to 4 significant figures, giving 5.506x10^23 atoms.</span>
The number of atoms in calcium nitrate can easily be found by multiplying a given mole of Calcium Nitrate by Avogadro's number since each mole of a substance contains 6.03 × 10²³.
Now, mol of Ca(NO₃)₂ = mass of Ca(No₃)₂ ÷ molar mass of Ca(NO₃)₂ mol of Ca = 16.67 g ÷ [(40 × 1) + (14 × 2) + (16 × 3 × 2) g/mol mol of Ca = 0.1016 mol
Evolution means Gradual Development. It is a procedure in the gradual development in which species of different animal's, plants etc... leisurely started to change some of their activities or elements and it changes only due to some situations it changes over many generations also.
