Read ed the questions listed belo Show your work on a separate sheet of paper as you will be turning thi
answer in the space provided. Be sure to use
the appropriate number of sig figs! This will effectively eliminate
mystery you are trying to solve. Figure out "who-dun-it" with which weapon and where by solvi
Question
NaHCO3 _CO2 + _H2O + _Na2CO, If you decompose 3.00 moles of sodium bicarbonate, how many moles of water will be
produced?

Which best describes why nh4+ can form an ionic bond with ci-?

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

Apump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump