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When solving simultaneous equations our goal is always to use the equations given, which each have two unknowns in them, in order to find an equation with only one unknown. In this example, we can see tha...

A=5 when B=7, B=4 when C=5. (Using Ratios, 5:7 & 4:5)
Knowing the relationship between both A & C with B means that we can find the relationship between A&C themselves. (A=5, B=7)*4 ; ...

First write out the equation given:Na + O₂ —> Na₂ONow count how many oxygen atoms are on the LHS of equation (2) and how many are on the RHS (1). This means you must put a 2 in f...

This question is relevant to different coding languages, and it can be easily explained using Java language : for instance, we will use an integer array called FOR:for(int i=0;i<ArrayList.size();i++) t...

Take the mass of alpha particle to be 6.6410^-27 kg accurate to 3 s.f. Note that the the work done in an electric field accross a potential difference is E = QV, where Q is the total charge of the alp...