Acid strength decreases in the series HI > HSO 4 - 1 > HF> HCN. Which of these anions is the weakest base

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

An experimental procedure requires a 10 ml of acid to be dissolved

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids