-10 + 22 = ?
32
-32
12
-12
We know that x−y = −y+x. Thus, -10 + 22 = 22 - 10 = 12
Question 7
The value of 1022+10201020 is (a) 10 (b) 1042 (c) 101 (d) 1022
How many moles of molecules and atoms of sulphur are present in 0.1 mole of S8?