How to find molecular mass?

Let’s learn how to find molecular mass. The most accurate or helpful solution is served by Yahoo! Answers.

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How do I find the molecular mass of LiBr?

okay I think g/mol is the mass that's on the periodic table and if that's true then I have 86.84g/mol in LiBr. This question I have says "Find the molecular mass in u" so if I add the masses of Li and Br on the table I get 86.84, is all I need...

Answer:

First of all, LiBr does not form molecules. Second, you are correct in calculating the molar mass (g...

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Other solutions

Since I fell asleep in class, how do you find the molecular formula when the molecular mass is given?

I'll share a problem so you could maybe guide me through the problem that way I can solve the other problems using this one. Find the molecular formula of 40.0% C, 6.71% H, ...show more

Answer:

So you have 60 grams/mol. 40% of that is carbon, so 0.40 * 60 grams/mol = 24 grams per mole. Since carbon...

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How to find the centrifugation time, speed to centrifuge out sample of known mass / molecular weight / size?

Is there any mathematical equation to find the centrifugation time , speed (rpm) for any sample of known mass,size and molecular weight ? I have a protein loaded to my porous nanoparticle. Now I have to study the loading stabilty in course of time. My...

Answer:

It all depends on the masses, shapes, viscosity, the rotor radius, and possible rotor velocities. The...

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How to find # of atoms, given molecular mass and percentage of one element?

The hormone testosterone has a molecular mass of 288.4 amu and contains 79.12% carbon by mass. How many carbon atoms are in each testosterone molecule? (A) 21 (B) 23 (C) 28 (D) 17 (E) 19 I feel like you have to know the empirical formula of testosterone...

Answer:

you do not need to know the empirical formula for this problem. you first find rthe percent mass of...

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How to find relative molecular mass of a gas?

Find the relative molecular mass using volume and weight at Room Temperature and Pressure

Answer:

hi!! well u could use the formula PV=nRT where p = pressure = 1atm (standard) v = volume of the gas...

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Answer:

The molecular mass of a substance is the mass of one mole of the substance which is the number of grams...

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Michael at Yahoo! Answers Mark as irrelevant Undo

With two effusion rates, how do you find the molecular mass of one?

The effusion rate of hydrogen sulfide (H2S) is 1.50 mol/s. Another gas under similar conditions effuses at a rate of 1.25 mol/s. What is the molecular mass of the second gas?

Answer:

Jonathan, If it's not too late, then this might help you, Graham's Law of Effusion http://library.thinkquest...

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I need help solving this chem problem. find the molecular mass of CH4 methane?

what is the percent difference the molecular mass of natural gas and the molecular mass of methane. I was given 0.188 g of natural gas, 757.8 mm for barometric pressure, 350 K for temperature and the density of the gas is 0.627g/L. I know the formula...

Answer:

MW of Methane (periodic table) CH4, 12+4 = 16 g/mol MW of natural gas PV=nRT ---> convert 757.8 mm...

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How to find mass of hydrate, anhydrous salt, ect?

Lab report: molar mass of unknown is 120.359 Mass of crucible and lid after heating=24.278g Mass of crucible, lid, hydrated before heating=29.378g Mass of crucible, lid, anhydrated(1st)=26.288g Mass of crucible, lid, anhydrated(2nd)=26.281g Mass of hydrate...

Answer:

Your descriptions of the various masses does not make a whole lot of sense, but lets see what we can...

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Find the molecular/empirical formula from the atomic mass of elements and molecular mass of compound ?

Mr is 396 elements are Si 28 Cl 35 O 16 calculate the molecular formula and show your working

Answer:

The amount of elements in the sample is missing so the problem is cannot be solved.

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