1. Which is the smallest unit: 500 cm , 5000 mm, 4 m 2.Which is the smallest unit: 0.2 L, 240 mL, 50 cL

3.Which is the smallest unit: 3000 mg, 250 cg, 3 kg

4.Which is the smallest unit: 4 L, 5000 mL, 23,000 cL

5.Which is the smallest unit: 17 m, 17,040,000 cm, 17, 400,000,005 mm

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

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c is the answer because when something is left after something evaporates that shows the chemical change.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.