The image below shows four boxes that each contain a different sample of gas. The atoms of each gas are represented by dots, 1 2 3 4 Which box contains the gas with the greatest density? A. 1
B. 2
C. 3
D. 4

which three statements are true about all alloys?

conservation of mass

mass before something happens = mass afterwards

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.

the answer you are looking for is d. there are no holes for blood to enter or leave the system. your welcome