Which statements about a sample of gas containing molecules of different masses are true? check all that apply. a. more-massive gas molecules in the sample have lower rms speed than less-massive ones. b. more-massive gas molecules in the sample have higher rms speed than less-massive ones. c. the rms speed depends only on temperature, and so all types of particles in the sample have the same rms speed.

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !

The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams