Finding percentage requires the number to be in fraction. You can covert a whole number into fraction, by making it the numerator and making 1 as the denominator. If A is numerator and B is denominator then,
% = A/B * 100
Chi a+
CHI3
C3 h3o
What is the formula for percent fractional error? (Physics)
100 %
How do you get 20 percent out of 200?You have to use this formula; is/of = %/100. That formula will give you the answer every single time!The answer is: 40.
The formula for percent by volume (% v/v) is: (Volume of solute / Volume of solution) x 100 The formula for percent by mass (% w/w) is: (Mass of solute / Mass of solution) x 100
Not completely. The empirical formula of a substance can be determined from its percent composition, but a determination of molecular weight is needed to decide which multiple of the empirical formula represents the molecular formula.
C3h4o2
70 percent
It's anybody's guess what such a formula might look like,because 20 is not 75 percent of 15.75 percent of 15 is 11.25 .15 is 75 percent of 20 .
The empirical formula of this compound would be MgO.