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2-chloropropanoic acid has a Ka of 1.48E-3. Write an expression for Ka and hence or otherwise, calculate the pH of a 0.35M solution of 2-chloropropanoic acid

In these multiple part questions, it is often the case that the previous part of the question will provide necessary information for answering the following parts, as hinted by the use of 'hence'. It's ve...

Answered by Colin M. • Chemistry tutor

8298 Views

i) Simplify (2 * sqrt(7))^2 ii) Find the value of ((2 * sqrt(7))^2 + 8)/(3 + sqrt(7)) in the form m + n * sqrt(7) where n and m are integers.

i) (2sqrt(7))² = 2² sqrt(7)² = 4 * 7 = 28 (1 mark) ii) First of all substitute the answer from above. ((2 * sqrt(7))² + 8) / (3 + sqrt(7)) = (...

Answered by Andrew B. • Maths tutor

7624 Views

What is the difference between profit and cash flow?

Cash flow is all the money flowing in and out of a business. This is calculated at the exact time actual cash enters or leaves a business bank account or till. Profit is calcuated by calculating ALL trans...

Answered by Sarah P. • Business Studies tutor

2661 Views

What is the electron arrangement for a Co atom?

Look up Co on the periodic table. Proton number is 27. Therefore, the number of electrons is 27.

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁷, 4s

Answered by Emma P. • Chemistry tutor

2569 Views

If Incomes increase what would happen to demand for bus rides (an inferior good) in the market?

Start the question by defining what is an inferior good - An inferior good is a type of good for which demand declines as the level of income or real GDP in the economy i...

Answered by Sarah P. • Business Studies tutor

4347 Views