calcium phosphate reacts with aqueous nitric acid to produce phosphoric acid and calcium nitrate Ca3(PO4) 2+6HNO3-2H2PO4+3Xa(NO3)2. (1) a 7.26g sample of calcium phosphate reacted completely when added to an excess of aqueous nitric acid to form 38.0cm3 of solution. Calculate the concentration in moldm^-3 of phosphoric acid in this solution.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

If two objects at different te,peraure are in contact with each other what happens to their temperature