Windshield washer fluid is often composed of a mixture of water and various low- molecular weight alcohols ( like ethanol and methanol). Imagine you have been asked to prepare two formulations of washer fluid: one for use in Florida and one for use in Alaska. Describe the ratios of alcohol to water that you would use for each solution.

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

the product of the pressure and volume is also constant

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.