What is the SI unit of pressure?
A) Pascal (Pa)
B) Atm
C) Torr
D) Bar
Question 2
Find the difference between two masses measured as 123.6 grams and 115.972 grams. Express the answer to the correct number of significant figures.
A) 7.6 grams
B) 7.63 grams
C) 7.628 grams
D) 8.0 grams
E) 8 grams