Question

In the addition of three masses 1.4 g ,4.24 g and 7.432 g has x significant figures. The value of x is

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Answer 1

Answer:

3 significant figures are present

Explanation:

they ask in 7.432 has how much no. of X significant figures so it has 3 no. of significant figures

Answer 2

Significant figures

In the measured value, The reliable digits and the first uncertain digit is called Significant figures.

Addition of significant figures

While adding numbers, the Number should be added and rounded off such as to retain the least number of decimals.

Given Question

In the addition of three masses 1.4 g ,4.24 g and 7.432 g has x significant figures. The value of x is

Answer

1. 4

4. 24

7.432

======

13. 072

Since, The least decimal numbers as in 1.4 is one decimal,

13.072 ≈ 13. 1

So, The addition of three masses, 1.4 g ,4.24 g and 7.432 g results in 13.1 g.

In 13.1, There are 3 significant figures.

Because All non zero digits are significants.

Conclusion

In the addition of three masses 1.4 g ,4.24 g and 7.432 g has x significant figures. The value of x is 3.