Answer:
Oxygen (O), for example, has three naturally occurring isotopes, which can be written as 8/16O, 8/17 O, and 8/18O.
Explanation:
Answer:
5.81 x 10^23 formula units Fe2O3
Explanation:
Answer:
Option C = 1.72 mol
Explanation:
Given data:
Mass of KF = 100 g
Moles of KF = ?
Solution:
First of all we have to calculate the molar mass of KF.
Molar mass of KF = 39.0983 g/mol + 18.998403 g/mol
Molar mass of KF = 58. 0967 g/mol
Formula:
Number of moles = mass/molar mass
Number of moles = 100 g/ 58.0967 g/mol
Number of moles = 1.72 mol
<span>1.4 moles of aluminium metal is exposed to 1.35 mol of oxygen
Theoretical yield=0.007 mol
calculate % yield
% yield= actual yield/theoretical yield*100
% yield= 0.938/0.700*100
% yield= 13.4% yield</span>
