Question Video: Determining the Number of Significant Figures for a Given Value in Kilograms | Nagwa Question Video: Determining the Number of Significant Figures for a Given Value in Kilograms | Nagwa

# Question Video: Determining the Number of Significant Figures for a Given Value in Kilograms Chemistry

To how many significant figures is the value 0.0023 kg given?

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### Video Transcript

To how many significant figures is the value 0.0023 kilograms given?

We can think of significant figures of a number as the digits that determine its value and precision. The first three digits in the number are zero, zero, and zero. None of these zeros contribute directly to the value or precision of the number to come. It’s the number two that’s the first nonzero digit. So, it’s the two that’s our first significant digit. The three has also been given, so that’s a significant digit as well. And we could write zeros after the three, but we haven’t actually been told what those digits are. The number could have been rounded, so these trailing zeroes are not significant. So, the value 0.0023 kilograms has been given to two significant figures.

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