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Finally, add together the total mass of each element to get the molar mass of Na2SO4: 45.97953856 g/mol + 32.065 g/mol + 63.9976 g/mol = 142.04213856 g/mol. 5. Find Mole Fraction. To find the mole fraction and percentage of each element in Na2SO4, divide each total from step 3 by the total molar mass found in step 4:
Molar mass: 142.04 g/mol (anhydrous) 322.20 g/mol (decahydrate) Appearance ... Sodium sulfate (also known as sodium sulphate or sulfate of soda) ...
- 1,429 °C (2,604 °F; 1,702 K) (anhydrous)
- 884 °C (1,623 °F; 1,157 K) (anhydrous), 32.38 °C (decahydrate)
- Na₂SO₄
- 142.04 g/mol (anhydrous), 322.20 g/mol (decahydrate)
Sodium sulfate is used extensively as a natural filler in powdered laundry detergents(1). Sodium sulfate in moderation is used as a diuretic and cathartic for humans and animals and it is used in consumer products such as laxatives and antacids(1) and as a food additive(3,4). Sodium sulfate has been detected in cigarette tobacco(5).
4. 45.0554. Computing molar mass step by step. First, compute the number of each atom in Na 2 SO 4: Na: 2, S: 1, O: 4. Then, lookup atomic weights for each element in periodic table: Na: 22.98976928, S: 32.065, O: 15.9994. Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Na 2 SO 4) = ∑ Count i * Weight i =.
David Park. 4 years ago. First, you can calculate the molar mass of FeCl2 by adding the molar masses of Fe (55.845 g/mol) and 2 atoms of Cl (2 times (35.446 g/mol). This gives a molar mass of 126.737 g/mol. Since each mole is 126.737 grams, you multiply 3.5 mols by 126.737 grams, giving you 443.58 grams.
- 6 min
- Sal Khan
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- I don't understand finding the significant figures at the end of the example. What are significant f...The basic idea is that your answer to a calculation shouldn’t have more significant figures than the initial quantity given has. The initial quanti...
- why we say NaCl or KCl always why we don't say ClNa or ClK instead.Traditionally, the most electronegative element is written last. However, there is no harm in writing ClNa, just as long as you know that chlorine...
- At 3:20 why did Sal write 180.16, as the answer was 180.156, why didn't he write 180.15?It's important to keep in mind significant figures are important for doing calculations in a science like chemistry. After a calculation would be a...
- at 0:42,molar mass is equal to mass per mole? Like molar mass of *H* in gram is 1 gm/1 mole ?This is true! This is the case because 1 mole of a molecule is equal to 6.02214076×10^23 (avogadros constant) individual molecules. Avogadros const...
- How come at 1:57 the hydrogen is the only element not rounded off to the 2nd decimal point?It is probably because the atomic mass of hydrogen is so small that the extra precision makes a more significant difference when doing calculations...
- I don't really understand where the 1000 came fromThe question says it’s a 1.52 kg sample of glucose. In order to use the molar mass of glucose (~180 g/mol), the 1.52 kg needs to be converted into...
- why doesn't Sal just divide 1.52 kg by the atomic mass of an single glucose atom?If you follow the maths of the units, it doesn’t yield mols as the answer. 1.52 kg is the total mass of the sample. And since glucose is a molecule...
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How to find molar mass of sodium sulfate?
What is the molar mass and molecular weight of Na2SO4 ( sodium sulfate)?
How do you find the molar mass of Na2SO4?
What is the molar mass and molecular weight of Na 2 SO 4?
Jul 29, 2021 · The molar mass of ethylene glycol is 62.068 g/mol. B The number of moles of ethylene glycol present in 35.00 g can be calculated by dividing the mass (in grams) by the molar mass (in grams per mole): 35.00gethyleneglycol(1molethyleneglycol ( g)) 62.068gethyleneglycol) = 0.5639molethyleneglycol.
Sodium sulfate. Formula: Na 2 O 4 S; ... Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
