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What is the empirical formula of a compound that is 40 percent sulfur and 60 percent oxygen by weight?
We assume 100 grams of compound and change % to grams. Get moles. 40 grams S (1 mole S/32.07 grams) = 1.247 60 grams O (1 mole O/16.0 grams) = 3.75 Now, the smallest mole value, sulfur, is 1. Divide the oxygen mole value by the sulfur mole value. 3.75 mole O/1.247 mole S = 3.00 SO3 ------- is the empirical formula
How many oxygen atoms does 1mol of o2 gas have?
1 mole of oxygen contains 6.022 x 1023 atoms. A mole of atoms of any element is 6.022 x 1023 atoms. A mole of anything is 6.022 x 1023 of that thing. For example, a mole of cars is 6.022 x1023 cars.
What is the molar mass of ferric ammonium citrate?
The molar mass of ferric ammonium citrate is approximately 270.00 g/mol.
What is the mass prcent of oxygen in sulfur dioxide?
A sulfur dioxide has one sulfur atom and two oxygen atoms. Therefore, considering a mole of sulfur dioxide (64g); there is 32g of sulfur and 32g of oxygen. Hence the mass percent of oxygen is 50%.
What are the commonly used mass fraction units in chemistry and how are they calculated?
Commonly used mass fraction units in chemistry include weight percent ( w/w), volume percent ( v/v), and mole fraction (X). Weight percent ( w/w) is calculated by dividing the mass of the solute by the total mass of the solution and multiplying by 100. Volume percent ( v/v) is calculated by dividing the volume of the solute by the total volume of the solution and multiplying by 100. Mole fraction (X) is calculated by dividing the moles of the solute by the total moles of the solution.
Is mole percent equal to atomic percent?
No.
1.61 mole percent to PPM?
1.61 mole percent is equivalent to 16,100 parts per million (PPM). This conversion is based on the fact that 1 mole percent is equal to 10,000 parts per million.
Is mole percent equal to weight percent?
No, the two concepts are quite unrelated.
What is mole percent?
Mole percent, or molar percent of a substance is the ratio of the moles of a substance in a mixture to the moles of the mixture. It represents the number of moles of a substance in a mixture as a percentage of the the total number of moles in the mixture. Mole % = (mol substance in a mixture) / (mol mixture) * 100
Is mole percent of a gas is equal to its volume percent?
No, mole percent and volume percent are not necessarily equal for a gas. Mole percent is the ratio of the moles of a gas to the total moles of all gases in a mixture, while volume percent is the ratio of the volume of a gas to the total volume of all gases in a mixture. The two can be equal only if the gases have the same molar volume at the given conditions.
What is weight of 2 mole percent of molecular iodine?
.005078 g is the weight of 2 mole percent molecular iodine.
How do you convert mole fraction to volume fraction of liquid?
You need the balanced symbol equation for the reaction. The numbers in front of the formulae show the mole ratios. For example, in the thermal decomposition of calcium carbonate: CaCO3 --> CaO + CO2 The equation is balanced. The mole ratio between CaCO3 and CO2 is 1:1 because there is 1 mole of CaCO3 for every mole of CO2
What is the mole fraction of oxygen in a gas mixture that is 37 percent oxygen and 63 percent nitrogen in volume?
To find the mole fraction of oxygen, first convert the percentages to fractions: 37% oxygen is 0.37 and 63% nitrogen is 0.63. Since the total mole fraction in a mixture is 1, the mole fraction of oxygen would be 0.37/(0.37 + 0.63) = 0.37/1 = 0.37. Therefore, the mole fraction of oxygen in the gas mixture is 0.37.
Can you give me an example of a mole fraction?
10 to the power of 7?
Mole percent vs volume percent?
Mole percent vs volume percent is a simple comparison to make. Mole percent is equivalent to moles of substance/moles of total x 100. Volume percent is volume of substance/volume of total x 100.
What is the percent sulfate in CuSO4.5H2O?
If i understand the question as a percent of sulfate in a compound of Cu(ii)5+(So4)5. If i can remember the formula take the total molar mass of Cu5 as 317.75g/mole and of (So4)5 480.35g/mole add them together, 317.75g/mole + 480.35g/mole this becomes your denominator. Take the mass of sulfate and place in the numerator and the outcome is the multiplied by 100. (So4)5 480.35g/mole --------------------------------------------------------- = .60187 x 100 = 60.187% Cu5 (317.75g/mole) + (So4)5 (480.35 g/mole) But this will not answer the percent if it is an amount of compound in an amount H2o you would need to separate the compound from the water then take there weights and divide them by there weights prior to separation. The above answer is theoretical based on percent of sulfate in a molecule of Cu5(So4)5.
What mole ratio would you use to convert from moles of chromite to moles of ferrochrome?
The mole ratio would be 1:1. For example, if you have 1 mole of chromite, you will also have 1 mole of ferrochrome when it is completely converted.
