combustion analysis of an unknown compound containing only carbon and hydrogen produced 2.845 g of co2 and 1.744 g of h2o. what is the empirical formula of the compound?

How many grams of naoh are needed to make 0.250 liter of a 0.500 m solution of naoh? 0.125 g 5.00 g 2.00 g

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

0.09 moles of sodium sulfate in 12 ml of solution