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Sat Nov 04, 2006 5:11 am

I need to convert 50g into liters. Is the following correct: 50g = 50cm^3 = 50 ml = .050L?

Sat Nov 04, 2006 10:52 am

The weight to volume ratio above is correct ONLY if using a substance that has a specific gravity of 1.0, such as water at 4ยบ C.

However, notwithstanding specific gravity, 50 cm^3 = 50 ml = 0.05 L

However, notwithstanding specific gravity, 50 cm^3 = 50 ml = 0.05 L

Sat Nov 04, 2006 10:56 pm

Many thanks. I tried to look up specific gravity in my textbook (I'm in Freshman Inorganic chemistry) and it's not there so I guess I'm not supposed to know that yet.

What I'm trying to do is find the work done when 50 grams of tin dissolves in excess acid at 1 atm and 25 C. I know that work=-(P)(deltaV). In similar problems in the chapter, when we didn't know volume, we calculated it using V=nRT/P. However, in all those problems, the products & reactants were liquids and/or gasses with mass given in liters. For this problem, the initial volume is given in grams. I'm assuming I should use the same approach, i.e. calculate V-final and V-initial, determine delta V, and solve.

Would anyone be willing to comment on whether or not this is the right approach?

What I'm trying to do is find the work done when 50 grams of tin dissolves in excess acid at 1 atm and 25 C. I know that work=-(P)(deltaV). In similar problems in the chapter, when we didn't know volume, we calculated it using V=nRT/P. However, in all those problems, the products & reactants were liquids and/or gasses with mass given in liters. For this problem, the initial volume is given in grams. I'm assuming I should use the same approach, i.e. calculate V-final and V-initial, determine delta V, and solve.

Would anyone be willing to comment on whether or not this is the right approach?

Tue May 08, 2007 10:14 am

you have no idea how long ive been looking for that conversion thanks

Mon Aug 20, 2007 2:45 am

Since you have a pressure and volume, it's likely that they want you to convert your grams to moles (n) and use VP=nRT. Then take you liters (V) and apply to your equation. Because 50g does not equal 50 cm^3. Those are entirely separate. Mass and Volume. There is no conversion. (Unless you've got density)(density=g/L) Although it does beg the question how my teacher expects me to find grams of O2 from 2.54 liters without any other variables.