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H₂SO₄ + NaOH --> Na₂SO₄ + H₂OWrite out all the elements involved, and how many times they appear on each side.H 3:2,S 1:1,O 5:5,Na 1:2.Start by ma...

It can be shown that the equation of any plane can be given by r.n=a.n, where r = xi + yj + zk, n is a direction vector normal to the plane, and a is any point vector on the plane. a can be found easily (...

When writing an exam answer, each paragraph should make a point, give evidence, and explain/analyse the evidence in relation to the question. The evidenc...

Label both equations to make it easy to refer to them in your answerEqn 1: 4x+5y=-3Eqn 2: 6x-2y=5To solve these equations we need to be able to eliminate either the y terms or the x terms. In ord...

Find 90% of 130Calculate the value of 10%130 / 10 = 13You can now use this value to find the answer as 100% - 10% = 90%130 - 13 = 117