A certain substance X condenses at a temperature of 147.2 °C. But if a 800. g sample of X is prepared with 77.9 g of urea ((NH2)2Co) dissolved in it, the sample is found to have a condensation point of 150.7 °C instead. Calculate the molal boiling point elevation constant Kb of X.
Be sure your answer has the correct number of significant digits

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution

Which samples do the atoms have the least kinetic energy