Multiply by 1000 to get grams, then by 1000 to get mg.....3500 mg

Ether is the name of a group of compounds that have a Carbon group on both sides of an oxygen atom, examples:

Ch3--O--CH3

CH3CH2--O--CH2CH3

Therefore there are hundreds of molecules of "ether".  Each one have specific properties. Some are poisons, some are medicines, some...put you to sleep.

Chlorine molecule (Cl2) has a molar mass of 70.9g/mole . Therefore, 0.0056 moles have 0.397 g of the gas. The volume of the gas is dependent of the pressure and temperature. So before you know the volume you need to establish at what temperature and pressure you are at.  (PV=nRT)

He had not though of you originally, but now that he knows you like him...he is intrigued! Stop. He does not like you yet. Show him your best, talk to him. He will decide soon and then, if my guess is right and judging by all the times he looks at you, he will like you.

Lasagna!!!