The pH of a solution is measured as 4.5. What is the hydrogen ion concentration of the solution? A. 4.0 * 10-5 M B. 3.2 * 10-5 M C. 4.5 M D. 3.2 * 104 M

After which atomic number is every element radioactive and can form through artificial transmutation?

You have a 5.0 L balloon that you bought in Denver (0.85 atm). If you take that balloon back to sea level, where the pressure is 1.0 atm, what will the new volume of the balloon be?

Mechanical waves that travel through a. a vacuum b. outer space c. a black hole d. a medium

Elements in group 15 through 17, do they do they lend AND borrow electrons?

What is the ph of a solution made by mixing 25.00 ml of 0.100 m hcl with 40.00 ml of 0.100 m koh? assume that the volumes of the solutions are additive. what is the ph of a solution made by mixing 25.00 ml of 0.100 m hcl with 40.00 ml of 0.

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Examples of chemical and physical changes

Is when hot parts of the earth rise as cooler parts sink due to differences in density.