Calcium fluoride, CaF2, has a molar solubility of 2.1 x 10^-4 mol/L at pH = 7.00. By what factor does its molar solubility increase in a solution with pH = 3.00? The pKa of HF is 3.17

(A) 1.48

(B) 1.83

(C) 2.48

(D) 4.96

What holds the atoms together in a covalent bond? the attraction between the shared electrons and protons in each nucleus a weak electron cloud the attraction of the opposing ions the crystal lattice structure

What kind of element forms covalent bonds? Give two reasons why.

To breed or train; to tame a wild animal to live with humans.

Find the hydroxide ion concentration of a HBr solution with a pH of 4.75

Write a brief explanation about why a plant extract is a mixture

The enthalpy of a system is the same as its: A. specific heat. B. heat of reaction. C. heat of combustion. D. heat content.

Carry out the following operations as if they were calculations of experimental results, and express each answer in the correct units with the correct number of significant figures: (a) 5.6792 m + 0.6 m + 4.33 m (b) 3.70 g - 2.9133 g (c) 4.51 cm x 3.

What is the formula for a compound containing one atom of sodium, one atom of oxygen, and one atom of hydrogen

A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the density of Pb is 11.34 g/cm3, calculate the mass of the block

1. What is the name of TiSe