2ca3(po4)2 + 6sio2 + 10c --> p4 + 6casio3 + 10co how many grams of calcium phosphate are required to give 30.0g of phosphorus? ? i got 542g but i think that is way off. i did 30g p/30.97g to get .989 moles p • 2ca= 1.94 mole ca• 279.21g to get from miles to grams. explain how to do it and if you can where i went wrong.

What type of matter is made of only one kind of atom

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: