The chief compound in the mineral celestine consists of strontium, sulfur, and oxygen. The percentage composition is 47.70% Sr and 17.46% S; the remainder being oxygen. Its formula weight is 184. What are the empirical and molecular formulas of this compound?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Why are pipes bursting in the in extremely cold weather?