If you wanted to change the polarity of hydrogen bromide (HBr) by substituting

the bromine by a different atom. Which atom would increase the polarity of the

molecule?

A. chlorine (CI)

B. iodine (1)

C. sulfur (S)

D. hydrogen (H)

Aqueous hydrochloric acid reacts with solid sodium hydroxide to produce aqueous sodium chloride and liquid water. If of water is produced from the reaction of of hydrochloric acid and of sodium hydroxide, calculate the percent yield of water.

Which of the following compounds is likely to be a base? H2SO4 HCl Ca (OH) 2 HF

What is the entropy change for freezing 2.71 g of C2H5OH at 158.7 K? ∆H = - 4600 J/mol. Answer in units of J/K.

Which functional group contains oxygen atom? a. Carbonyl group b. Amino group c. Sulfhydryl group

What is the proper structure for 3-methylpentane? draw the molecule on the canvas by choosing buttons from the tools (for bonds), atoms, and advanced template toolbars. the single bond is active by default?

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)

If you start with 4 moles of iron and 3 moles of oxygen to produce iron oxide, what is the limiting reagent? (You will need to balance the equation first.) Fe + O2 - > Fe2O3

Is burning wood a physical change

A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)