Answer to Question #160822 in General Chemistry for Sarai

Question

A student finds that the weight of an empty beaker is 16.600 g. She places a solid in the beaker to give a combined mass of 16.629 g. To how many significant figures is the mass of the solid known?

Answer 1

Solution:

16.629 g - 16.600 g = 0.029 g

The mass is known to only 2 significant figures.