A sample of propane, C3H8 C 3 H 8 , contains 16.3 moles m o l e s of carbon atoms. How many total moles of atoms does the sample contain?

1 mole C3H8 contains 3 mol C and 8 mol H, 14 mol C will:

14 mol C x 1 mol C3H8/ 3 mol C  x 8 mol H / 1 mol C3H8 = 37.3 mol H

The total moles in the sample: 14 mol C + 37.3 mol H = 51.3 mol atoms

Explanation:

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally