Physical science

posted by .

how can i calculate the number of: 1.molecules in 30g water.2.atoms in 50 dm^3 nitrogen gas.3.nucleons in 10 cm^3 flourine gas?

  • Physical science -

    1. Hint:
    One mole of water (18 grams) contains 6.022E23 molecules of H2O).
    2. Hint: There are 6.022E23 molecules in 1 mole N2 which occupies 22.4 L at STP and the number of atoms is twice that.
    3. Hint:How many moles F2 do you have? That will be 10cc/22,400 = ??
    How many F2 molecules do you have? That will be moles x 6.022E23. How many atoms F2 do you have. You will have twice the number of molecules. How many nucleons do you have? There are 9 protons and 10 neutrons in each molecule of F2.

  • Physical science -

    Calculate the total number of ions in 2,0g K2SO4

  • Physical science -


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Please show me the steps..... At STP, 3.00 L of nitrogen gas contains the same number of molecules as A) 1.00 L of nitrogen gas B) 2.00 L of oxygen gas C) 3.00 L of chlorine gas D) 4.00 L of hydrogen gas
  2. science

    The average velocity of molecules of nitrogen gas (N2) at room temperature is around 500 m/s. If you were to raise the temperature of the nitrogen gas by 50°C what is a good estimate for the speed of the molecules?
  3. Physical science

    The number of molecules in 30g of water?
  4. (1-13) Chemistry - Science

    Which of the following effects will make the ratio (PV) / (nRT) less than 1 for a real gas?
  5. physical science

    calculate the number of molecules in 30g water
  6. physical science (chemistry)

    calculate the number of atoms in 50 dm3 nitrogen gas
  7. Science

    Calculate the number of (a) atoms in 50 dm^3 nitrogen gas (b)nucleons in 10 cm^3 fluorine gas
  8. chemistry

    how many molecules are in 5.5 moles of oxygen gas?
  9. Chemistry PLS HELP

    The cover plate is removed from the gas jars shown iin the diagram. Nitrogen dioxide is a brown gas. After several days, the color of the gas is the same in both of the jars. What explains this change?
  10. Chemistry

    Calculate volume of ammonia gas produced at STP when 140g of nitrogen gas is reacted with 30g of hydrogen gas.

More Similar Questions