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Lubov Fominskaja [6]
3 years ago
7

Give the number of significant figures in this number: 7.8 x 10¹²

Chemistry
1 answer:
denis-greek [22]3 years ago
8 0
The number is written in scientific notation.


The significant figures are the numbers known precisely plus 1 digit that is uncertain.


When the numbers are expressed in scientific notation all the digits before  10^n are significant.


So, 7 and 8 are significant figures and the answer is that the number of significant figures is 2.


Answer: 2
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