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How do I balance an equation for a reaction, such as complete combustion of ethene?

Balancing equations is a simple conservation of the elements in a reaction: what you start with is what you finish with. With that in mind, let's take a look at the equation:C 2 H 4 + O 2 -> CO 2 + H 2 OT...
KM
Answered by Kieran M. • Science tutor
3647 Views

"The story of Echo and Narcissus is a love story." Do you agree or disagree? Give reasons for your answer

Echo and Narcissus is not a love story. Ovid may be known for his elegiacs on love and courtship, but it is in the Echo and Narcissus episode that his true penchant for sex, wit and amoral punishment come to...
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Answered by George F. • Latin tutor
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The equation of the line L1 is: y = 5x-4. The equation for line L2 is 2y-10x+16 = 0. Show that these two lines are parallel.

L1: y=5x-4L2: 2y-10x+16=0. Rearranged: 2y=10x-16, y=5x-8 The coefficient of x is the same in both equations when expressed in standard format (5), therefore the lines are parallel. Here is how I would talk a...
AW
Answered by Alfie W. • Maths tutor
5680 Views

Solve x^2+4x-5=0

Two approaches.1.Note that the equation is a quadratic equation, and can thus be solved per the quadratic formula, in which the solutions are given to be (-b+-sqrt(b^2-4ac))/2a.Plugging in the values from th...
SH
Answered by Samuel H. • Maths tutor
4931 Views

What are the consequences of drug use in sport on the sport itself?

The 'clean' athletes and new records set are questioned and not given credit they deserve. It creates bad publicity and a bad name for the sport, e.g Tour de France cycling after Lance Armstrong doping case....
RB
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