physical chemistry

1g of hydrogen contains 6x10^23 atoms. the atomic wt. of helium is 4 u. it follows that the number of atoms in 1g of He is:

  1. 👍 1
  2. 👎 0
  3. 👁 310
asked by veer
  1. See your posts above.

    1. 👍 0
    2. 👎 0
  2. 1÷4×6×10^23

    1. 👍 0
    2. 👎 0
    posted by Pawan

Respond to this Question

First Name

Your Response

Similar Questions


    What is the chemically combined substance of a hydrogen atom and a helium atom. please help me because i really don't know this is confusing really please and thankyou Hydrogen atoms don't normally combine with helium atoms. In

    asked by Anonymous on November 7, 2006
  2. a&p

    In modern blimps, the gas of choice is used to inflate them is helium is safer. Compare and contrast the atomic structure of hydrogen and helium. What characteristics of the atomic structure of helium make it so much less reactive

    asked by tameka on February 2, 2013
  3. college

    A gas containing both hydrogen molecules (each molecule contains two hydrogen atoms) and helium atoms has a temperature of 300 K. How does the average speed of the hydrogen molecules compare to the helium atoms?

    asked by Anonymous on October 25, 2013
  4. Chemistry/reading

    Although Rutherford's model was highly successful, scientists realized that it was incomplete. For example, hydrogen atoms contain one proton, and helium atoms contain 2, yet a hydrogen atom has only 1/4 the mass of a helium atom.

    asked by Anonymous on July 1, 2015
  5. Astronomy

    Mass of the Sun = 1.989 x 10^30 kg Mass of Hydrogen Atom = 1.00794 grams If we assume the Sun is made totally of hydrogen, how many hydrogen atoms are contained within the Sun? If the Sun converts hald of these hydrogen atoms into

    asked by Jobeth on November 27, 2011
  1. 12th grade physics

    Helium is monatomic with a relative atomic mass of 4. calculate (i) the density of helium gas at a temperature of 0 degrees Celsius and a pressure of 101kPa and (ii) the rms speed of the helium atoms under these conditions

    asked by Enya on September 20, 2010
  2. ap chem

    A mole of helium gas contains 6.02x10^23 helium atoms. How many helium atoms are there in a micromole of helium? How many moles of helium does 1.25x10^20 atoms of helium represent? ~I have no idea how to start or what the value of

    asked by sara on December 13, 2006
  3. Astronomy

    If we assume the Sun is made totally out of hydrogen, how many hydrogen atoms are contained with the Sun? If the Sun converts half of these hydrogen atoms into helium over its lifetime of about ten billion years, how many hydrogen

    asked by Kaitlyn on November 22, 2011
  4. physics

    A portable steel tank with a volume 35 liters (0.035m³) holds helium gas used for filling party balloons. The pressure in the tank is 120atm when at room temperature of 22 °C. How many moles of helium gas are in the tank? Each

    asked by sand on January 4, 2012
  5. Physics

    A sealed container of volume V =0 .10m^3 holds a sample of N =3 .0×10^24 atoms of helium gas in equilibrium. The distribution of speeds of the helium atoms shows a peak at 1.1×10^3 ms^−1. (i) Calculate the temperature and

    asked by Anon on March 20, 2018

More Similar Questions