0.5g of a non-volatile solute is dissolved in 100g of ethyl acetate at 20°C. The vapour pressure of the solution and pure ethyl acetate are 72.0 torr and 72.8 torr respectively at 28°C. Calculate the molecular weight of the solute.

The limiting reactant(s) appeared to be

Fill in the blanks for the following statements: the rms speed of the molecules in a sample of h2 gas at 300 k will be times larger than the rms speed of o2 molecules at the same temperature, and the ratio µrms (h2) / µrms (o2) with increasing temperature. a not enough information is given to answer this question b sixteen, will not change c four, will not change d four, will increase e sixteen, will decrease

Give 2 characteristics of low mass stars