2 H3PO4 +3 Mg(OH)2 -- Mg (PO4)2 + 6H20 Phosphoric acid, H3PO4, is neutralized by magnestuen hydroride, Mg(OH), according to the equation shown, How many moles of water will be
produced from the neutralization of 6.95 mol of H3PO 2

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Express the following number in scientific notation. 0.026890 =

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added