Answer: 10 ml of 200 mM 
is required and 30 ml of water is required.
Explanation:
According to the dilution law,
where,
= concentration of stock solution = 200mM
= volume of stock solution = ?
= concentration of resulting solution= 50mM
= volume of another acid solution= 40 ml
Thus 10 ml of 200 mM is required and (40-10) ml = 30 ml of water is to be added to make 40 ml of 50mM .
Answer:
0
Explanation:
standard hydrogen is considered to be protium isotope of hydrogen that has one electron revolving around the nucleus containing one proton and no neutrons.
it's atomic number and mass number is 1
and number of neutrons = mass no. - atomic no.
= 1 - 1
=0
I can't explain the like dissolves like part but the water and oil I can
when oil is poured into water the oil will stay at the top of the water meaning that water is more dense than oil
Hey there!:
Molar mass FeF3 = 112.84 g/mol
Number of moles = mass of solute / molar mass
Number of moles = 24.0 / 112.84
Number of moles = 0.212 moles of FeF3
Hope that helps!
