Two of them and they are 23
When rounding 233.356 to two significant figures, we start counting from the leftmost non-zero digit. In this case, the first two digits are 2 and 3. The digit following the last significant figure (3) is 3, which is less than 5, so we do not round up. Therefore, 233.356 rounded to two significant figures is 230.
4 of them.
108.6957
23
23.43 rounded to two significant figures is 23.
Two.
Two of them and they are 23
0.0023
0.0175
0.0342
3 of them.
There are 6.02214076 x 10^23 carbon atoms in a mole of 12C with eight significant figures.
When rounding 233.356 to two significant figures, we start counting from the leftmost non-zero digit. In this case, the first two digits are 2 and 3. The digit following the last significant figure (3) is 3, which is less than 5, so we do not round up. Therefore, 233.356 rounded to two significant figures is 230.
0
Avogadro's number is typically written as 6.022 x 10^23, meaning it has four significant figures, 6, 0, 2, and 2.
4 of them.