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Explain the trends in first ionisation energy in the second period in the periodic table.

This question is designed to test a students knowledge of electronic configuration in elements, and their ability to use this knowledge to assign a reasoning to the trend given. The general trend is an incre...
FO
Answered by Fergus O. • Chemistry tutor
3227 Views

√5( √8 +√18) can be written in the form a√10 where a is an integer.

First, I would take into account the important parts of the question. I'm looking for an answer in the form of "a√10, where a is an integer". I would explain if not known that an integer is just a ...
GW
Answered by George W. • Maths tutor
5472 Views

There are only red , blue and purple counters in a bag. The ratio of the number of red counters to the number of blue counters is 3 : 17. If a counter is taken randomly the probability that it is purple is 0.2 Work out the probability for it to be red.

I would first take into account all the variables - there are red, blue and purple counters, we know the ratio of red to blue and we know the probability of purple is 0.2. As I know the probability that purp...
GW
Answered by George W. • Maths tutor
17973 Views

Describe how water, ions and sugar are obtained and transported through plants.

Water Water is obtained from the soil into the roots of the plant. This occurs via osmosis , which is the movement of high water potential to low water potential [alternatively, from an area of low to high c...
OH
Answered by Olivia H. • Biology tutor
8424 Views

The curve C is given by the equation x^4 + x^2y + y^2 = 13. Find the value of dy/dx at the point (-1,3). (A-level)

The most important thing to note about this question is that we must differentiate implicitly. We must differentiate each term with respect to x. Using our differentiation rules we can see that our first ter...
RK
4115 Views