What is heliums velocity?

What number of smallest or largest is Uranus? Why electrolysis does not take place in distilled water? Where do mesophytes grow? What is it called when a huge hole is left when the roof of a volcanic mountains magma chamber collapses? What are the circles on a animal cell called? What is the wavelength of a signal that travels in air with a period equals .0000025 sec What is the signal's frequency? Is 15.8 white blood cell count high? Which city has more urban environment Jakarta Indonisia or Hanoi Vietnam? What does 6 pm release mean? Where do volcanic mudflows mostly likely occur? What are the names of the gases that exist as a gas in ordinary conditions? Why are there so many theories about how life bagan on earth? How many cups in quart of ketchup? How many protons are in the nuclei of the following atoms lead? What is the wattage of a standard four foot fluorescent bulb? Identify a strategy to reduce the barrier of inadequate feedback? How much money is spent on boxing day? Electron configuration of nickel? What happen if cell is placed in hypotonic solution? Why NH3 is poor reducing agent while BiH3 is a strong redusing agent?