Revisit INVESTIGATIVE
PHENOMENON
GO ONLINE to Elaborate and Evaluate your
design of an experiment to show conservation of
mass in the reaction of baking soda and vinegar.
21 Construct an Explanation How does a forest fire model the energy
flow of fuel combustion? Explain.

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.)

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy