You have 2 litres. You need to divide 91 by 2 to get it per litre. 91/2 is 45.5g. 45.5 / 95.211. This gives you 0.477886 molar
.200 M means there are .200 moles in one liter. 90.0 ml is .0900 L. (.200 moles/liter)(.0900 L)= .0180 moles. 3 significant places.
The answer is 0,009 moles for anhydrous MgCl2.
The time is 2:00 AM
120
It is 0200 AM.
The number is: 0901 802 0200 Hope this helps!
Probably it uses a battery to provide it with energy.
At 0900 UTC it's 0100 PST and 0200 PDT.
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