mpen contains equal number of molecules, i.e., 6.022 x 1023 EXERCISE 1. 2. Add (0.001 + 0.02) upto correct number of significant figures (1) 0.021 (2) 0.02 (3) 0.003 (4) 0.001 The multiple 5 * 0.2 after rounding off will be (1) 1 (2) 1.0 (3) 1.00 (4) 1.000 Round off 0.1576 upto one digit after decimal (1) 0.1 (2) 1.6 x 10-1 3.
Answers
Answered by
11
Answer:
No. of moles in Na=1/11 and in Mg = 1/12. Therefore no. of atoms is more in Na than Mg
A circle of radius = 1.751 or diameter = 3.501 or circumference = 11 cm has an area of: 9.629 × 10-10 square kilometers (km²) 0.0009629 square meters (m²) 9.629 square centimeters (cm²)
Similar questions