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NCERT Exemplar Solutions Class 7 Mathematics Solutions for Fractions and Decimals - Exercise in Chapter 2 - Fractions and Decimals

Question 6 Fractions and Decimals - Exercise

In her science class, Jyoti learned that the atomic weight of Helium is 4.0030; of Hydrogen is 1.0080; and of Oxygen is 16.0000. Find the difference between the atomic weights of Helium and Hydrogen.

Answer:

Atomic weight of Hydrogen is 1.0080

Atomic weight of Helium is 4.0030

Atomic weight of Oxygen is 16.0000

Difference between atomic weights of Helium and Hydrogen = 4.0030 – 1.0080 = 2.9950

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