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ii) The maximum permitted sulfate concentration in water is 250mg dm^-3, 200cm^3 of aqueous BaCl2 is added to 300cm^3 of water at the maximum permitted sulfate level, and a white precipitate formed. Calculate the minimum conc. (mol dm^3)of the BaCl2

250x10^-3= 0.25g dm^-3sulfate mr x moles = mass0.25 x 3/10 = 0.075 g sulfatemr sulfare = 32 + (4 x 16) = 96moles sulfate = 0.075/96 = 7.8125 x10^-4Per equation above: moles SO₄

Answered by Josh M. • Chemistry tutor

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What is the deadweight loss of a tax and how do I calculate it?

We have inverse aggregate supply and demand curve and our product is sold at the market equilibrium price. We know that a demand curve is downward sloping, that means there will be less goods demanded at ...

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When aqueous barium chloride is added to a solution containing sulfate ions a white precipitate is formed. i)Write the ionic equation for the formation of this precipitate.

Ba²⁺_(aq)+SO₄^2-_(aq)---->BaSO_4(s)

Answered by Josh M. • Chemistry tutor

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Integrate (lnx)/x^2 dx between limits 1 and 5

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Answered by Jimmy L. • Maths tutor

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Critically assess the mens rea requirements for the offence of Murder

It is a key principle of the criminal law that you have the intention, or mens rea, for the offence you are charged with; I would submit that for murder only an intention to kill should suffice. The mens ...

Answered by Christopher M. • Law tutor

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