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The price of coffee beans rose from $1.15 to $1.40 between June and August 2017. A possible cause of this rise is: a) Improved weather conditions in coffee-growing countries; b) An increase in national minimum wage in coffee growing countries.

The correct answer is b).The price mechanism is defined as the interaction between supply and demand for a good, which determines price such that quantities supplied and demanded are equal.An increase in nat...
GS
2498 Views

How can I prepare for the LNAT multiple choice?

The LNAT is supposedly a test that you 'can't' prepare for. It is designed to test your natural aptitude for textual comprehension and structuring arguments - crucial skills for being a lawyer. However, ther...
ZR
Answered by Zara R. • LNAT tutor
3713 Views

Acid HA has a Ka of 2.00 x 10-4mol dm-3. A solution was made by adding 15cm3 of 0.34 M NaOH to 25cm3 of 0.45M HA. Calculate the moles and the concentration of A- and HA in this solution. Using the expression for Ka calculate the pH of the solution

Write the equation : NaOH + HA --> NaA + H 2 O. Find the moles of A - : the moles of A - = the moles of NaOH added. 15 x 10 -3 x 0.34= 5.10 x 10 -3 . Workout the initial moles of HA : 25 x 10 -3 x 0.45= 0...
HS
Answered by Hibba S. • Chemistry tutor
7469 Views

How do I even start going about learning the verb conjugations when there are so many different moods, tenses and endings?

When I was tutoring GCSE students at my school, this was often the first question I was asked. To a GCSE student, the prospect of learning a vast array of conjugation tables seems daunting and verbs tend to ...
DC
Answered by Daniel C. • French tutor
2498 Views

How would you calculate the vertical and horizontal components of the velocity of an object with an initial velocity of 15m/s which is travelling upwards at an angle of 30 degrees to the horizontal?

With these sort of questions involving components, I would always advise drawing a diagram of the problem so that you're clear of the situation!In this case we have an object that is travelling at a speed of...
JP
Answered by Joseph P. • Physics tutor
7398 Views