Which substance in cigarettes numbs the throat to allow for deeper inhalation?

a. tar

b. menthol

c. carbon monoxide

d. nicotine

4Fe + 3O2 → 2Fe2O3 How many moles of Fe2O3 are produced from 0.5 moles of O2? Use your stoichiometry flow chart & dimensional analysis! 0.33 mol 0.75 mol 0.38 0.67

2.5 moles of sodium chloride is dissolved to make 0.050 liters of solution

A Bugatti can travel from 0 m/s to 30 m/s in 300m. How fast is it accelerating?

1. __NaBr + _CaOH) 2 - _ CaBr, + ___ NaOH

What is the chemical test to differentiate ethanol from ethanoic acid

How much ice at a temperature of - 17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 ∘C?

Why does a gas fill completely the vessel in which it is kept?

Individuals who work full time and those who work part-time enjoy basically the same number of paid leave benefits. True False

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.