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Balance the following redox equation: PbO2 + SO32- ==> Pb2+ + SO42-

To balance redox equations, do the following steps:
-Divide into 2 half equations
-Balance the formula EXCEPT for oxygen and hydrogen
-Balance the number of oxygens by adding water
...

ZC
Answered by Zain C. Chemistry tutor
12178 Views

How should I structure each paragraph within my essays?

Remeber to make your point first, ensure that the marker knows exactly what you are going to be talking about in that paragraph. Once you have made this point keep referring back to it as you write your p...

AP
Answered by Alice P. History tutor
2066 Views

How do I solve the simultaneous equations x-2y=1 and x^2-xy+y^2=1?

Depending on what you prefer, you can either substitute or you can try to solve this by elimination. I'll explain both. 1) x - 2y = 1 2) x2 - xy +y2 = 1 If solving by elimination, yo...

KS
Answered by Katerina S. Maths tutor
12327 Views

How do I calculate the 100th term of the sequence 15, 8, 1, -6...

A sequence means a pattern, so the first thing to do is find the pattern. First try seeing what the difference between the numbers is. 15-7=8, 8-7=1, 1-7=6, so the pattern must be to subtract 7 each time....

KS
Answered by Katerina S. Maths tutor
10280 Views

How do I find the derivative of 2^x?

To find the derivative of any number to the power "x", such as 2x, 5x, or even 4.13x, we first consider the general form ax. We need to be a little cr...

KS
Answered by Katerina S. Maths tutor
39937 Views

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