Milk is sold in four sizes. Which is the better buy? * 250 mL for $0.50

500 mL for $1.10

1L for $1.80

2L for $3.90

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g