Which of these cannot be decomposed into simpler substances?

What letter is not used as a symbol of chemical element?

Part complete how much water would you add to 175 ml of 6.00 m hydrochloric acid to prepare a 2.00 m solution of this acid?

Which statement correctly describes electrochemical cells? A) Electrochemical cells involve only oxidation reactions. B) Electrochemical cells involve only reduction reactions. C) Electrochemical cells involve oxidation-reduction reactions.

The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M?1.8 s1.3 s0.089 s5.6 s0.31 s

If you have 200 grams of SO4, how many molecules of SO4 will you have?

How is pressure related to buoyant force

How are saturated and supersaturated solutions similar?

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.

A laboratory procedure calls for making 600.0mL of a 1.1M KNO3 solution. How much KNO3 in grams is needed?