How many significant digits are there in 6.023 x 1023 molecules?

Answer : The number of significant digits are, 4

Explanation :

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.All non-zero numbers are always significant. For example: 654, 6.54 and 65.4 all have three significant figures.All zero’s between integers are always significant. For example: 5005, 5.005 and 50.05 all have four significant figures.All zero’s preceding the first integers are never significant. For example: 0.0078 has two significant figures.All zero’s after the decimal point are always significant. For example: 4.500, 45.00 and 450.0 all have four significant figures.All zeroes used solely for spacing the decimal point are not significant. For example : 8000 has one significant figure.

As per question the given number is,

As we know that the given number represented in scientific notation.

So, in the given number there are 4 number of significant digits which are 6, 0, 2, 3.

Hence, the number of significant digits are, 4

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