, 24.01.2020rodriguezzamyy

Acompound is composed of 72% iron and 27.6% oxygen. what is the empirical formula?

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

The empirical formula is .

Explanation:

Empirical formula is the easiest way of represent a chemical compound with representing the ratio of each element present in the compound. For finding the empirical formula, first we have to know the molar mass present in the given percentage of elements.

As we know that the molar mass of iron is 55.8 g/mol and oxygen in 16 g/mol, then dividing the percentage of elements given with their respective molar mass will give us the moles present in this composition.So,

Now the least among the two is 1.29, so we have to divide the moles of Fe and O with this to determine the ratio of each element. So, we are getting the ratio of 1:1.3, then if we multiply it by 3, we can get integer terms as 3:4. Thus, we obtained that Fe is 3 and O is  4. So the empirical formula will be .

The empirical formula is .

Explanation:

Empirical formula is the easiest way of represent a chemical compound with representing the ratio of each element present in the compound. For finding the empirical formula, first we have to know the molar mass present in the given percentage of elements.

As we know that the molar mass of iron is 55.8 g/mol and oxygen in 16 g/mol, then dividing the percentage of elements given with their respective molar mass will give us the moles present in this composition.So,

Now the least among the two is 1.29, so we have to divide the moles of Fe and O with this to determine the ratio of each element. So, we are getting the ratio of 1:1.3, then if we multiply it by 3, we can get integer terms as 3:4. Thus, we obtained that Fe is 3 and O is  4. So the empirical formula will be .

Other questions on the subject: Chemistry

Chemistry, 21.06.2019, vivi4924
on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consu...Read More
Chemistry, 21.06.2019, tamikagoss22
a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh i...Read More
Chemistry, 22.06.2019, proxydayz
Air masses carry moisture and temperature differences. when air masses of differing qualities meet, weather is produced....Read More
Chemistry, 22.06.2019, speris1443
when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c    ...Read More