0.039 6 gram of a metal was completely dissolved in hydrochloric acid and the hydrogen evolved was mixed with oxygen and sparked to form water. 13.75 CC of dry oxygen at 27 degree Celsius and 680mm pressure were required for complete combustion. Find the equivalent weight of the metal.

What are the 4 phases of matter in order of increasing engery content?

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.