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

a. tar

b. menthol

c. carbon monoxide

d. nicotine

Explain the electrical conductivity of melted and of aqueous solutions of ionic compounds using the characteristics of ionic compounds

Which law is obeyed in the following statement? A reaction has the same amount of atoms of each element on both sides. A Law of conservation of energy B Law of conservation of mass C Law of conservation of atoms D Law of conservation of temperature

If the concentration of a sugar solution is lower outside the cell than inside the cell which will happen by osmosis?. A. Sugar will move into the cell ... B. Sugar will move out of the cell ... C. Water will move into the cell ... D.

A velocity vs time graph is a graph that shows the relationship between the velocity of an object over time___is plotted on the x-axis in seconds, and the___of the object is plotted on the y-axis in meters per second.

Which elements make up a water molecule? hydrogen and nitrogen O oxygen and nitrogen O oxygen and carbon hydrogen and oxygen

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.