Molality is the number of moles of solutes in 1 kg of solvent.
the molality of solution to be prepared is 2.0 molal.
therefore 2 moles in 1 kg water.
the mass of Li₂S required is - 46 g/mol x 2.0 mol = 92 g
the mass in 1 kg of solvent is - 92 g
Therefore mass of Li₂S required in 1600.0 g is - 92 g/kg x 1.6 kg = 147.2 g
<span>Metals tend to lose electrons and form electro-positive ions / cations.</span>
Answer:
Add G and H to determine the atomic mass for helium
Explanation:
Answer:
decane
Explanation:
decane has 10 carbon and 22hydrogen
