A solution of acetic acid has an equilibrium pH of 2.54 (pKa = 4.75). What was the original concentration of acetic acid?

A.

0.469 molar

B.

0.467 molar

C.

0.462 molar

D.

0.571 molar

E.

0.398 molar

Why do we ignore noble gases usually when we discuss electronegativity values?

Trevor, Neville Longbottom's pet toad, has a mass of 13.6 kg. Trevor jumps into a large cylinder containing water. The water level rises 2.50 L. What is the density of the toad? Express your answer in kg/L.

What is a chemical formula

Which element has atoms with the strongest attraction for electrons in a chemical bond? chlorine nitrogen fluorine oxygen

A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.

Write the neutralization reaction that occurs between h2se and lioh.

How many oxygen molecules are in 3.36 L of oxygen gas at STP

As baby scorpions grow larger, which process occurs in their body (somatic) cells? A. Meiosis splits the chromosome numbers by four B. Meiosis produces all of the new body cells. C. Mitosis makes copies of the cell nuclei. D.

HC]A laboratory experiment requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution.

True or False: The halogens are nonmetals with a - 1 charge. True False