Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit.

This video teaches significant figures rules, crucial for measurements and calculations. It covers identifying significant digits, including non-zero digits, zeros in between, leading zeros, and trailing …

Now that we have a decent understanding of how to figure out how many significant figures we're even dealing with, let's think about a situation where significant figures will or might become relevant.

This video teaches addition and subtraction with significant figures, emphasizing that the result should match the least precise measurement. It offers examples and explains the real-world importance of …

And, let's see, just to get our significant digits here, our significant figures, out of all of the things we multiplied, see we had four significant digits here, four significant digits here, but we only had three …

Basically, you have to first identify how many sig figs are in a problem. The number of sig figs tells you that there could only be that much sig figs in the final answer (round to the number of sig figs). In this …

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Sal shows how we can treat units of measurement algebraically, and use these tools in order to convert between different units of the same quantity.

A buffer has an effective pH range of one pH unit on either side of the pKₐ value for the weak acid. If the pH of a buffer goes out of this range, the buffer will no longer be effective at resisting large changes …

So, 0.00034 only has 2 sig-figs (3 and 4). let's say we have extra zeros at the end of the number like 0.000340, it has 3 sig-figs (3, 4 and 0 at the end). 340 (2 sig figs) (no decimal point)