What is the colour formed when N2O is bubbled into a solution of acidified FeSO4

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon

Which statement explains which thermometer is more appropriate to measure the temperature of a liquid at 43.6 degrees celsius a) thermometer a, because it measures temperature more accurately than thermometer b b) thermometer b, because it measures temperature more accurately than thermometer a c) thermometer a, because it measures temperature more precisely than thermometer b d) thermometer b, because it measures temperature more precisely than thermometer a