[ike1047]

 What is the concentration of a solution in g/mL that contains 6.0 g in a volume of 1.8 mL?

im not sure about this one?
can someone show me how to do it


[Edit: title made more appropriate. Will you please read the rules, this is becoming tiresome - Dan]

[english]

You're overshooting this one entirely.  What is concentration? 

What does g/mL signify?  Isn't this the same thing as concentration?  How do the units here differ from the units that molarity is defined by?

[parth]

Can anyone pls explain me about Twaddle (Tw)...and how to convert this to percentage conversion like %w/v, %v/v...thanks in advance...

[english]

I'm not sure what Twaddle is (?).

w/w, w/v, and v/v % are expressions of parts per hundred.

[chiralic]

Twaddle Degree (Twº) is a measure of specific gravity of solution, not its concentration. Similar to Baume Degree (Beº).

Liquids heavier than water
Twaddle(Twº) = ((density of the liquid at 60 °F/density of water at 60 °F) - 1) x 200

Example: To get concentration (i.e. molarity) of the HCl, you'll have to convert degrees Twaddle to a specific gravity, and then use the specific gravity to look up the concentration of HCl from a table in a handbook.

[satha13]

To convert %w/w to Molarity use 10 X (%) x Density divided by molecular mass

[Borek]

Concentration calculation lectures.