what is the formula to find the number of moles?
239213
['The formula for the number of moles formula is expressed as.', 'Given.', 'Number of moles formula is.', 'Number of moles = Mass of substance / Mass of one mole.', 'Number of moles = 95 / 86.94.']
1290706
Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles. There are fewer moles of oxygen than any other element, so we will assume one mole of oxygen to establish the ratios. Use the mole ratio to write the empirical formula.
990693
Calculate the number of moles of gas from the given pressure, volume, and temperature. n = 0.0371245 mol. The molecular weight of the gas is grams of gas (1.56 g) divided by moles of gas: 1.56 g ÷ 0.0371245 mol = 42.020768 g/mol.
237223
['Step 1: Obtain the mass of each element present in grams. Element % = mass in g = m.', 'Step 2: Determine the number of moles of each type of atom present. ... ', 'Step 3: Divide the number of moles of each element by the smallest number of moles. ... ', 'Step 4: Convert numbers to whole numbers.']
21867
Avogadro's number is an absolute number: there are 6.022×1023 elementary entities in 1 mole. This can also be written as 6.022×1023 mol-1. The mass of one mole of a substance is equal to that substance's molecular weight.
403918
Start with the number of grams of each element, given in the problem. Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number.
880885
The molar mass of SiO2 is 60.1 g/mol. Use the molar mass (as the conversion unit) to determine the number of moles. So the number of moles is 0.258 mol.
494819
First, determine the mass of each of the elements in 100 g of the substance. Next, determine how many moles there are of each element in 100 g of the substance by using the molar mass of each element. Divide each one by the smallest number of moles. So, the empirical formula is CH2Cl.
164167
['Step 1: Obtain the mass of each element present in grams. ... ', 'Step 2: Determine the number of moles of each type of atom present. ... ', 'Step 3: Divide the number of moles of each element by the smallest number of moles.']
1221482
To calculate the number of moles in a solution given the molarity, we multiply the molarity by total volume of the solution in liters.
1271083
Using a calculator, divide the number of grams by the molar mass. The result is the number of moles in your element or compound. For example, imagine you have 2 g of (NH4)2S and you want to convert it to moles.
639699
One mole equals the molar mass of the solute which is 58.4538 grams. Divide the mass of the solute by the molar mass to get the number of moles of solute.
103686
Explanation: Determine the mass of the substance, and its molar mass. Divide the given mass by its molar mass to get moles, then multiply times 6.022×1023molecules1mol .
90726
A mass in grams numerically equal to the molecular weight contains one mole of molecules, which is known to be 6.02 x 10^23 (Avogadro's number). So if you have x grams of a substance, and the molecular weight is y, then the number of moles n = x/y and the number of molecules = n multiplied by Avogadro's number.
1394439
Thenwe divide the given mass by this molar mass to get moles: 15.1g/(70.9) = 0.21298 moles.
404069
Using a calculator, divide the number of grams by the molar mass. The result is the number of moles in your element or compound.
954052
One mole of a compound contains Avogadro's number (6.022 x 1023) of molecules (molecular compound) or formula units (ionic compound). The molar mass of a compound tells you the mass of 1 mole of that substance. In other words, it tells you the number of grams per mole of a compound.