HELP PLEASE!! Rhenium (Re) is made up of 37.4% R185e and 62.6% R187e .

What is the number of protons in an atom of the least abundant isotope?

19. at high pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions, and why? eman- it is much less because real gas partides are not moving. there is no difference because the gas laws are always obeyed. it is much less because at high pressures the temperature drops. it is much greater because real gas partides take up space.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.