chemistry

posted by .

The mass of a sample of boron atoms is 5.60 g. How many boron atoms are in this sample? Show your work here.

  • chemistry -

    5.60/10.81 * 6.02 * 10^23

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Naturally occuring boron is 80.20% boron-11 and 19.80% of some other isotopic form of boron. What must be the atomic mass of this second isotope be in order to account for the 10.81 amu average atomic mass for boron?
  2. chemistry

    A sample of propane(c3h8)has 3.84x10^24 H atoms. a) how many carbon atoms does the sample contain?
  3. Chemistry

    Boron has only two naturally occurring isotopes. The mass of boron-10 is 10.01294 amu and the mass of boron-11 is 11.00931 amu. Use the atomic mass of boron to calculate the relative abundance of boron-10. Atomic mass of boron is 10.81 …
  4. Chemistry

    Boron Phosphide, BP, is a semiconductor, and a hard, abrasion resistant material. It is made by reacting Boron tribromide and phosphorus tribromide in a hydrogen atmosphere at high temperature (>750 degrees C) (a) Write a Balanced …
  5. Maths-Help

    A silicon ingot, which should contain 10^16 boron atoms/cm3, is to be grown by the Czochralski technique. What concentration of boron atoms should be in the melt to give the required concentration in the ingot ?
  6. Chemistry

    The mass of a sample of boron atoms is 5.60 g. How many boron atoms are in this sample?
  7. Chemistry

    A sample of toluene, C7H8 has a mass of 74.5 g. a) how many molecules does the sample contain?
  8. Chemistry

    When 0.500 moles of boron trichloride react with 1.20 moles hydrogen gas to produce elemental boron and hydrogen chloride gas, the actual yield of boron was 66.4 % of the theoretical yield. The mass of boron obtained was _____ g. Please …
  9. Chemistry

    Rubbing alcohol often contains propanol, C3H7OH. Suppose you have an 85.9 g sample. a) How many carbon atoms are in the sample?
  10. honors chem

    naturally occurring boron is 80.20% boron 11 (atomic mass= 11.01amu) and 19.80% of some other isoptopic form of boron. what must the atmoci mass be be in order to account for the 10.81 amu averafe atomic mass of boron?

More Similar Questions