a sample of hydrogen has an initial temperature of 50.0c when the temperature is lowered to -5.0c the volume of hydrogen becomes 212cm3 what is the initial volume of the hydrogen

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.

Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 · 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 · 3h2o

Can someone me out on this question for my national 5 chemistry homework