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What do you need to calculate the percent-age composition of a substance?
Wiki User
∙ 13y ago
The molecular formula of the compound can be calculated from the composition of element in a compound. The next steps are involved in the calculation of percentage of every element in a compound.
Wiki User
∙ 10y ago
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What is percentage composition by weight?
Please I need this to be answer as soon as possible
What is the most important thing you need to remember for a physical change?
The most important thing for your to remember is that in a physical change the composition of a substance does not change and in a chemical change the composition of a substance does change.
What is percentage problem?
It is a problem where you need to calculate percents.
Calculate 33 out of 36 as percentage?
33/36 x 100 = 91.67% To calculate a percentage, all you need to do is: x/y x 100 easy!
How would you calculate the density of a substance?
Density = Mass/Volume so you need to measure the mass of the substance and divide by the volume that it occupies.
To calculate the density of a substance what two properties do you need to know?
Mass, volume~Apex:)
How do you calculate the number of tablespoons in one ounce?
You need to know the density of the substance being measured.
What is 45 percent of a circle?
you need to quote the circumference to calculate the length of the arc or its percentage
How can you find the molecular formula of a compound when its percentage composition is given?
Yes, if you have some additional information, such as the molecular weight. For instance, the molecules C2H4 and C4H8 have exactly the same percent composition, but they are very different molecules. So you need some other information to tell them apart than the percent composition.Answer ExpandedThis is kind of a trick question. By knowing the percent composition, you would easily be able to determine its empirical formula, but molecular formula is a bit different. The molecular formula is the actual number of atoms in a molecule, so in order to find the specific molecular formula of a substance, you would also need to know how many grams there is of that substance.(This explains the difference between C2H4 and C4H8)
How do you calculate a percentage for a question with answers from very unlikley to very likely?
you need all the variables first . as in the interest that will be earned and calculate both equations.
Why do you need to calculate percentage change in an experiment?
To find the difference between the two numbers in percent form
Why is it not necessary to know the volume of a substance when calculating its density?
If you want to CALCULATE the density of an unknown substance, you need to divide its mass by its volume, so you need to measure both first. If it is a homogeneous (uniform) substance, and you can take away a piece, you can take any sample. Any piece of the substance will have the same density.
