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Sahay Sir > Question Answers > NCERT Class 8 > Maths > Chapter 12 - Exponents and Powers > 115. Express each of the following in standard form: (a) The mass of a proton in gram is (b) A Helium atom has a diameter of 0.000000022 cm. (c) Mass of a molecule of hydrogen gas is about 0.00000000000000000000334 tons. (d) Human body has 1 trillon of cells which vary in shapes and sizes.

115. Express each of the following in standard form: (a) The mass of a proton in gram is (b) A Helium atom has a diameter of 0.000000022 cm. (c) Mass of a molecule of hydrogen gas is about 0.00000000000000000000334 tons. (d) Human body has 1 trillon of cells which vary in shapes and sizes.

90. a^m × b^m = (ab)^m