There are 4 significant figures in this number.
5 of them.
4
There are 3 significant figures.
1.056ml has four significant figures. A significant figure is any non-zero digit or any embedded or trailing zero. Leading zeros are not significant.
6 significant figures.
There are 4 significant figures in this number.
There are 5 significant figures in this measurement.
No
As many as are required
5 significant figures.
5 of them.
4
2 of them.
There are six significant figures in 1009.630 mL. The zeros that follow the decimal point and are trapped between nonzero digits are considered significant.
5
There's one, because after the decimal point the first non zero number is 6.