How many hydrogen molecules are there in 1 ton of hydrogen? (Hint: How many grams are there in 1 ton?) YOU MUST SHOW ALL OF THE STEPS AND YOU MUST DO THE PROBLEM JUST AS ILLUSTRATED. INCLUDE UNITS!

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?