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Find the exact value of the expression, if possible. Do not use a calculator.cos -1 

(05.05 MC) A synthesis reaction takes place when carbon monoxide (CO) and hydrogen gas (H2) react to form methanol (CH3OH). How many grams of methanol are produced when 2.8 grams of carbon monoxide reacts with 0.50 grams of hydrogen gas?

The abdominopelvic cavity is subdivided into the _____ cavities.

(05.05 MC) A synthesis reaction takes place when carbon monoxide (CO) and hydrogen gas (H2) react to form methanol (CH3OH). How many grams of methanol are produced when 14 grams of carbon monoxide reacts with 1.5 grams of hydrogen gas?

The _____________ is highly implicated in substance abuse and is considered to be the reward center of the brain.

(05.02 LC) Which formula can be used to calculate the molar mass of ammonia (NH3)?

Making drugs illegal eliminates future drug use.

(07.02 LC) Which of the following factors affects the amount of heat absorbed by a substance?

Find all solutions of the following equation. ​ sin x cos x – 2 sin x = 0 ​ Select the correct answer, where k is any integer:

(07.07 MC) Consider the following equilibrium reaction having gaseous reactants and products.4HCl + O2 ⇌ 2H2O + Cl2Which of the following would result from increasing only the concentration of hydrochloric acid?