Sulfur molar mass

At 25°C and 380 mm Hg, the density of sulfur dioxide is 1.31 g/L. The rate of effusion of sulfur dioxide through an orifice is 4.48 mL/s. What is the density of a sample of gas that effuses through an identical orifice at the rate of 6.78 mL/s under the same conditions What is the molar mass of the gas ... 

The addition of 0.24 g of sulfur to 100. g of the solvent carbon tetrachloride lowers the solvent s freezing point by 0.28°C. What is the molar mass and molecular formula of sulfur ... 

Use the molar mass of atomic sulfur to find the value of x in the molecular formula Sv. 

C03-0125. A 3.75-g sample of compound that contains sulfur and fluorine contains 2.93 g of fluorine. The molar mass Is less than 200 g/mol. Calculate the percent composition of the compound and determine its molecular formula. 

The greatest number of S atoms is contained in the compound with the greatest number of moles of S. The solid sulfur contains 8x0.12mol = 0.96 mol S atoms. There are 0.50x2 mol S atoms in 0.50 mol S20. There is slightly greater than 1 mole (64.1 g) of S02 in 65 g, and thus a bit more than 1 mole of S atoms. The molar mass of thiophene is ... 

A gaseous sample with a molar mass of approximately 254 g/mol was found to consist of 25.2% sulfur, S, and 74.8% fluorine, F. What is the molecular formula of this sample ... 

The conclusion that all low molar mass lignins are hemilignins is, however, an oversimplification since it has been shown that, on heating an aqueous solution of glycolignin sulfonic acid acidified with hydrochloric acid or sulfur dioxide and bisulfite, a monomeric sulfonated hydrolysis product is formed (2). 

Take the freezing-point constant from Table 8.9. Use this -molality to calculate the moles of solute in the sample by multiplying it by the mass of solvent in kilograms. At this stage, determine the molar mass of the solute by dividing the given mass of solute by the number of moles present. For the molecular formula, decide how many atoms of sulfur are needed in each molecule to account for the molar mass. 

The molar masses of the 2-oxoacid ferredoxin oxidoreductases are 200,000-300,000 g/mol and they are composed of four subunits of the kind a2p2. It has been shown that halobacteria have only these systems of 2-oxoacid ferredoxin oxidoreductases. The two enzymes of H. halobium (pyruvate and oxoglutarate) were isolated and characterized by Kerscher and Oesterhelt (1981a). These systems proved to be thiamin diphosphate-containing iron-sulfur proteins. The relative stability of the halobacterial enzymes enabled detailed analysis of the various steps of the catalytic cycles (Kerscher and Oesterhelt, 1981b), demonstrating two distinct steps of one-electron transfer reactions. 

For the determination of the unknown quantities in the liquid film, three further secondary conditions are needed. So, it is necessary to divide the molar masses of the sulfur and the calcium resulting from the mass balances in the film. A sulfur atom is bonded in hydrogen sulfite ion, molecular diluted sulfur dioxide, sulfite ion and calcium sulfite hemihydrate... 

How many grams of 02 are required to react with 0.75 mole of sulfur dioxide (S02) [Hint When calculating the molar mass of 02, remember to use the oxygen twice.)... 

D) Wrong Graham s law of effusion states that the rates of effusion are inversely related to the square root of the molar mass. This means that smaller particles will effuse more quickly than larger particles. All three balloons will get smaller at different rates, which means they will be different sizes on the next day (hydrogen will be smallest, followed by helium, and then sulfur hexafluoride). 

A 96.0 grams of sulfur dioxide (molar mass is 64) is the same as 1.5 moles of sulfur dioxide. This will equal 9.03 x 1023 molecules of sulfur dioxide. 

A method for the controlled emulsion polymerization of chloroprene using dithiocarbamic esters as sulfur-based chain transfer agents is described. The method provides industrially relevant molar masses with Mn s> 50,000 daltons with good yields in acceptable times. It was further determined that when pKa values for the dithiocarbamic acid precursors were less than 12, the thioester was ineffective as a regulator. 

Finally, use the molar mass of sulfur, 32.066 g/mol, to convert to a molar flow rate in g/day. This is converted to tonne/day using the conversion factor 106 g = 11. 

Sulfur occurs in several species. A common sulfur form is S8. If we assume that the sulfur is in this form, then 10.55 kmol/d of sulfur are produced. The molar mass of S8 is 256.53 kg/kmol. Converting to a mass flow ... 

To determine the molar mass of copper(I) sulfide, find the molar mass of the elements copper and sulfur using the periodic table. 

An unknown gas effuses at a speed one-quarter of that of helium. What is the molar mass of the unknown gas It is either sulfur dioxide or sulfur trioxide. Which gas is it ... 

Now, to obtain the mass of sulfur needed, 0.3525 mol Sg is multiplied by the conversion factor that relates mass and moles, molar mass. 

A. BaSOJ—The key to this type of problem is to imagine that you had a 100-gram sample of the substance, because this allows us to change % to grams. In this case, you would have 58.8 g of barium, 13.7 g of sulfur, and 27.5 g of oxygen. Next, you divide the mass of each element by its molar mass to find out how many moles you have of each. Finally, you reduce the number of moles to a simple whole number ratio, which becomes the subscripts for the formula. 

As we mentioned before, we can see that the molar ratio between zinc and hydrogen is 1 1. This means that 1 mole of zinc would react with an excess of sulfuric acid to produce 1 mole of hydrogen gas. Thus, 0.02 moles of zinc are required to produce 0.02 moles of hydrogen gas. Now that we know how many moles of zinc we need (0.02 moles), we can easily convert this to grams by multiplying by the molar mass of zinc 65.4 g/mole), which we find on the periodic table. 

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