to convert an element to moles you need to setup and equation, for our example we will be using 5g of O2 or oxygen. You need to know what O2's molar mass is as well, it is 32g.
So the equation would be 5g of O2 / 32 = .16 moles of O2. So to convert moles to grams all you do is multiply the moles given by the molar mass of the element/compound and you have your grams
Hoped this helped : )
The mass of 1 mole of the element is used as a conversion factor to convert grams to moles
number of moles = mass of the element/molar mass of the element
Well, darling, to find the empirical formula, you need to convert the grams of each element to moles. Then, you divide the moles of each element by the smallest number of moles calculated. In this case, the empirical formula would be CH3. Happy calculating, sugar!
Multiply the number of moles by Avogadro's number (6.022 x 1023).CONVERSION FACTORNumber of moles X Avogadro's Number////////////////////////////// 1 mole
To find the empirical formula, start by assuming you have 100 g of the compound. Convert the percentages to grams. Then convert the grams to moles using the molar mass of each element. Next, divide the moles of each element by the smallest number of moles to get the simplest ratio of atoms. Finally, write the empirical formula using these ratios.
Chemistry
First off you multiply moles by 1000 to convert to millimoles. Next you multiply by the molecular weight (found as the bigger figure on the element on the periodic table).
The mass of 1 mole of the element is used as a conversion factor to convert grams to moles
To determine the number of moles of an element from a known mass, you use the element's molar mass (grams per mole). Simply divide the given mass of the element by its molar mass to calculate the number of moles. This relationship is described by the formula: moles = mass (g) / molar mass (g/mol).
To determine the chemical formula from percent composition, you need to convert the percent composition of each element into moles. Then, divide the moles of each element by the smallest number of moles to find the ratio of elements. Finally, use this ratio to write the chemical formula.
To calculate the empirical formula from mass percentages, first convert the mass percentages to grams. Then divide the grams of each element by its molar mass to find the moles of each element. Finally, divide the moles of each element by the smallest number of moles to get the simplest whole number ratio, which represents the empirical formula.
number of moles = mass of the element/molar mass of the element
There are approximately 4.0 moles of Helium in 16 grams of the element.
To convert grams into atoms, you have to convert them into moles first. Get the molar mass and multiply it by the number of moles to get the atoms.
Well, darling, to find the empirical formula, you need to convert the grams of each element to moles. Then, you divide the moles of each element by the smallest number of moles calculated. In this case, the empirical formula would be CH3. Happy calculating, sugar!
The answer is 1,54 moles.
Multiply the number of moles by Avogadro's number (6.022 x 1023).CONVERSION FACTORNumber of moles X Avogadro's Number////////////////////////////// 1 mole