PLEASE ANSWER THIS FAST Upper H Subscript 2 Baseline Upper S Upper O Subscript 4 Baseline (a q) double-headed arrow 2 Upper H Superscript + Baseline (a q) + Upper S Upper O Superscript 2 negative sign Subscript 4 Baseline (a q)

Which contain a common ion that will shift the equilibrium system represented by the equation shown? Select all that apply.

MgSO4

Na2S

HNO3

CaCl2

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.