math

posted by .

How is percent composition calculated?
A. Dividing the mass of each element in the compound by the total mass of the compound and then dividing by 100%
B. Dividing the mass of each element in the compound by the total mass of the compound and then multiplying by 100%
C. Dividing the total mass of the chemical compound by the mass of each component element and then multiplying by 100%
D. Multiplying the total mass of the chemical compound by the mass of each element in the compound and then dividing by 100%


I say D

  • math -

    I think if you reconsider you will choose B.

    You correctly worked the problem for C3H8 by doing B.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. A.P Chemistry

    Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined. Some of the data obtained are given below Percent by weight Molecular Compound of Element Q Weight X 64.8% …
  2. A.P Chemistry

    Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined. Some of the data obtained are given below Percent by weight Molecular Compound of Element Q Weight X 64.8% …
  3. Chemistry

    Completion To calculate the percent composition of a known compound, start with chemical formula of the compound and calculate the ________ which gives the mass of one mole of the compound. formula mass. molecular mass.
  4. Chemistry (Check)

    Classify each of these statements as always true, sometimes true, or never true. 7____AT____It is necessary to know the formula of a compound in order to calculate its percent composition. 8___ST_____If the percent by mass of carbon …
  5. chemistry

    1.to calculate the percent by massof an element in a known compound, divide the mass of the element in one mole by the _______and multiply by 100%. A(n) _______formula represents the lowest________ratio of the elements in a compound. …
  6. chemistry

    Identify the quantity that is calculated y dividing the molar mass of an element by Avogadro's number. I don't get this question..?
  7. chem

    Citric acid, the compound responsible for the sour taste of lemons, has the following elemental composition: C, 37.51%; H, 4.20%; O, 58.29%. Calculate the empirical formula of citric acid. so i did that and got C6H8O7 but now i need …
  8. biology

    1 mole of an element or compound contains 6.20 times 10 to the 23rd power atoms or molecules of the element or compound. 1 mole of an element or compound has a mass equal to its mass number (or molecular weight) in grams. For example, …
  9. A.P. Chemistry

    Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined. Some of the data obtained are given below Percent by weight Molecular Compound of Element Q Weight X 64.8% …
  10. science

    Calculate the mass percent composition of each element in each compound.

More Similar Questions