For the reaction h3po4 (aq) h2po4 - (aq) + h + (aq) ∆h° = - 14.2 kj/mol. what is the ka of h3po4 at 60 °c? (a) 4.2  10-3 (b) 6.8  10-3 (c) 8.5  10-3 (d) 1.8  10-2

The equation represents Newton's Second Law of Motion. O A.) Force = Mass x Acceleration OB.) Mass = Force x Acceleration OC.) Acceleration = Mass x Force D.) none of the above

for any substance solid liquid or gas mass increases as volume increases because density represnets mass per volume

A solution is made by adding 35.5 mL of concentrated hydrochloric acid (37.3 wt%, density 1.19 g/mL1.19 g/mL) to some water in a volumetric flask, and then adding water to the mark to make exactly 250 mL 250 mL of solution.

Which property of isotopes makes them suitable for determining the dates of ancient artifacts?

Find the molarity of a sodium hydroxide solution if 25.0 g if NaOH are dissolved into 375 mL of water

Equilibrium reaction chromate

How does food in a fridge cool down

How many electrons would be found in the ion whose symbol is given below? N3-

In an atomic model that includes a nucleus, positive charge is a. located in the space outside the nucleus. b. spread evenly throughout an atom. c. concentrated at multiple sites in an atom. d. concentrated in the center of an atom.

In the Table of Atomic Particles, various symbols have two numbers. The top number represents the atomic mass of the particle, what do the bottom numbers represent? Select all that apply.