Please help me asap! and please explain. Which of the 0.10 M aqueous solutions has the lowest pH? Explain.
A. KCN, Ka of HCN = 4.0×10−10
C. NaC2H3O2, Ka of HC2H3O2 = 1.8×10−5
E. NaCHO2, Ka of HCHO = 1.8×10−4
B. NH4Br, Kb of NH3 = 1.8×10−5
D. NaClO, Ka of HClO = 3.2×10−8

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.