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How does increasing the temperature of the reactants in a reaction affect the rate of said reaction?

This is a typical GCSE chemistry question relating to collision theory. Collision theory states that for a reaction to occur, the reactant particles must collide at a sufficient level of energy. To answer th...
BP
Answered by Brian P. • Chemistry tutor
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Solve the simultaneous equations: 6a + b = 16 and 5a - 2b = 19

Rearrange the first equation to give b as the subject. b = 16 - 6a Then substitute that equation for b into the second equation. 5a - 2(16 - 6a) = 19 Simplify this equation (remembering to take account of th...
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Answered by Francesca L. • Maths tutor
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An electron of mass 9.11x10^(-31) is fired from an electron gun at 7x10^6 m/s. What size object will the electron need to interact with in order to diffract?

Momentum of electron=mv=6.377x10^ -24 kg m/s λ=h/mv=6.63x10 -34 /6.377x10 -24 =1.039...x10 -10 = 1x10 -10 m
JG
Answered by Jozefina G. • Physics tutor
3779 Views

Complete this substitution question: x^​3 - 25 = 103 - x^​3

Firstly, let's move the x^​3's onto the same side (and preferably keep them positive). Let's add x^​3 to both sides, which means the RHS will now read '2x^​3 - 25' and the LHS will read '103'. Next we want t...
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Answered by Aoife J. • Maths tutor
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What factors affect ionisation energy and how does each of them affect it?

atomic radius: the larger the atomic radius, the smaller the attraction of the outer shell electrons to the nucleus so the ionisation energy is lower reduced as atomic radius increases. 2. nuclear charge: th...
HO
Answered by Harriet O. • Chemistry tutor
23165 Views