Thursday
March 23, 2017

Post a New Question

Posted by on Wednesday, November 18, 2009 at 9:32pm.

How many grams of water (H_2O) have the same number of oxygen atoms as 1.0 (mol} of oxygen gas?

atomic mass of H is 1 and O is 16,
so H2O has a molar mass of 18.
Oxygen gas is O2, with a molar mass of 32. So 1.0 mole of oxygen gas has 6.02x10^23 molecules = 12.04x10^23 oxygen atoms. how do i go further?

  • Physics - , Wednesday, November 18, 2009 at 9:41pm

    No, you are given a mole of oxygen atoms, not oxygen gas. One mole of oxygen atoms O makes 1/2 mole of O2

    H2O means two H atoms for each O atom. So if you have a mole of O, you must have two moles of H.
    You then have one mole of H2O

    mass= mass H2 + mass O= 2+16=18

  • Physics - , Wednesday, November 18, 2009 at 9:46pm

    well my prof. provided me with this info..

  • well i c now that nobody wants to help me - , Wednesday, November 18, 2009 at 10:24pm

    we are students who are struggling. we are not here to get answers but we need help step by step. everybody is not same

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question