A volatile liquid was vaporized in a 250 mL flask placed in a boiling liquid. After cooling to room temperature, the mass of the liquid remaining was 0.950 g. If the temperature of the boiling point was 152 °C, and the barometric pressure was 744 torr, what is the molecular weight of the substance?

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Avariable that is not being directly tested during an experiment should be

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.