Chemistry

Catalytic reforming is a process for converting A) low octane rated alkanes into high octane ...

Started by Zulu123

Exposure to radioactive material is considered safe after 10 half-lives because A) less than a ...

Started by tiffannnnyyyyyy

Most aftershaves contain about 50 - 70 A) methanol. B) 2-propanol. C) ethanol. D) ...

Started by lb_gilbert

Perfumes are A) pure substances. B) compounds. C) simple mixtures of compounds. D) complex ...

Started by captainjonesify

Fats and cholesterol are carried in the blood by association with A) hemoglobin. B) lipids. C) ...

Started by scienceeasy

The heating of large hydrocarbon compounds with a catalyst in the absence of oxygen is called A) ...

Started by plus1

In carbon-14 dating, A) the radioactivity of carbon is artificially induced. B) the ...

Started by audragclark

A perfume's fragrance is just a bit too sweet and flowery. The perfume chemist might add some A) ...

Started by dakota nelson

Which of the following petroleum fractions has the highest boiling point? A) fuel oil B) ...

Started by saraeharris

The major components of petroleum is/are A) benzene. B) water. C) organic compounds of sulfur. ...

Started by newyorker26

A piece of fossilized wood has a carbon-14 radioactivity that is 1/4 that of new wood. The half-life ...

Started by james0929

High-density lipoproteins are the blood carriers of A) triglycerides. B) oxygen. C) fatty ...

Started by SGallaher96

Which of the following products is NOT made from petroleum? A) plastics B) detergents C) ...

Started by debasdf

High-density lipoprotein is often called good cholesterol because it A) breaks down cholesterol ...

Started by JGIBBSON

Colognes are about ________ as strong as perfumes. A) 1 B) 5 C) 50 D) ...

Started by erika

The number of hydrocarbons that make up the mixture called gasoline is A) less than 100. B) less ...

Started by Jramos095

Low-density lipoprotein is often called bad cholesterol because it A) breaks down cholesterol in ...

Started by mpobi80

Which of the following cosmetics contain the greatest amount of fragrant compounds? A) perfumes ...

Started by RODY.ELKHALIL

There is some evidence that exercise increases A) HDL. B) LDL. C) VLDL. D) all ...

Started by Alainaaa8

The EROEI for ethanol has been estimated to be between 1.67:1 to 0.78:1. Which of the following is ...

Started by ss2343

When nitrogen-14 is bombarded by alpha particles , a proton is produced. What other particle is ...

Started by tnt_battle

For most uses, the most convenient form of energy is A) chemical. B) electrical. C) mechanical. ...

Started by Davideckstein7

Ernest Rutherford bombarded nitrogen-14 with alpha particles and produced oxygen-17 and a proton. ...

Started by geoffrey

Approximately what percentage of the chemical energy of a fossil fuel electrical power plant is lost ...

Started by nenivikky

Liquefaction of coal produces a fuel that A) increases the energy content of the coal. B) is ...

Started by fagboi