Which type of compound are represented only by empirical formula as they do not exist in molecular form. Write empirical formula of one such compound.
Answers
Answer:
Begin with the number of grams of each element, which you usually find in an experiment or have given in a problem.
To make the calculation easier, assume the total mass of a sample is 100 grams, so you can work with simple percentages. In other words, set the mass of each element equal to the percent. The total should be 100 percent.
Use the molar mass you get by adding up the atomic weight of the elements from the periodic table to convert the mass of each element into moles.
Divide each mole value by the small number of moles you obtained from your calculation.
Round each number you get to the nearest whole number. The whole numbers are the mole ratio of elements in the compound, which are the subscript numbers that follow the element symbol in the chemical formula.
Sometimes determining the whole number ratio is tricky and you'll need to use trial and error to get the correct value. For values close to x.5, you'll multiply each value by the same factor to obtain the smallest whole number multiple. For example, if you get 1.5 for a solution, multiply each number in the problem by 2 to make the 1.5 into 3. If you get a value of 1.25, multiply each value by 4 to turn the 1.25 into 5.