You have two solutions, both with a concentration of 0.1M. Solution A contains a weak acid with a pKa of 5. The pH of solution A is 3. Solution B contains a weak acid with a pKa of 9. The pH of solution B is:

Which statement explains the kinetic theory of heat?

Hidróxido de rubidio (1+) formula

Two new planets with equal masses are discovered. Planet A is twice as far from the sun as Planet B. Which of the following is true? A.

Helium and hydrogen have almost the same atomic size, yet the ionization energy of helium is almost twice that of hydrogen. explain why hydrogen has a much higher ionization energy than any element in group 1 does.

If 100 ml of some pb (no3) 2 solution is mixed with 100 ml of 6.50 x 10-2 m nacl solution, what is the maximum concentration of the pb (no3) 2 solution added if no solid pbcl2 forms? (assume ksp = 2.00 x 10-5 m at this temperature.

The reaction below has an equilibrium constant kp=2.2*106 at 298 k. 2cof2 (g) ⇌co2 (g) + cf4 (g) calculate kp for the reaction below. cof2 (g) ⇌12co2 (g) + 12cf4 (g)

The electrical conductivities of the following 0.100 M solutions were measured in an apparatus that contained a light bulb as the indicator of conductivity. Rank the solutions in order of decreasing intensity (brightest to dimmest) of the light bulb.

What is the name of a list of elements arranged according to the ease with which they undergo certain chemical reactions?

Why is it harder for the earth to recover from some natural disasters now? A) Human influence may compound the damage. B) The natural disasters have gotten worse. C) This statement is not true.

Heat is most closely related to ___ energy. A. Nuclear B. Electrical C. Thermal