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For the reaction 2H2 + O2 -- 2H2O, how do I give an equation for the equilibrium constant in terms of the concentrations of products and reactants involved?

For any reaction, the equilibrium constant is given in the form: K = [products] / [reactants]

Where [ ] is used to denote the concentration of the species. 

Therefore we can substitute in fo...

LS
Answered by Liam S. Chemistry tutor
23473 Views

Calculate the momentum of a 5 tonne truck at 50km/h

We know momentum= mass (kg) X Velocity (m/s)

So we need to do these conversions:  1tonne=1000kg so 5 tonnes is 5x1000kg = 5000kg 

There are 1000km in a meter so 50x1000= 50000m/h to get this...

CZ
Answered by Callum Z. Physics tutor
2219 Views

Using complex numbers, derive the trigonometric identities for cos(2θ) and sin(2θ).

When dealing with complex numbers and trigonometric functions, always turn to DeMoivre's Theorem that states [cos(θ)+isin(θ)]n = [cos(nθ)+isin(nθ)]. If we set n=2, the we see a combina...

TK
Answered by Thomas K. Maths tutor
7754 Views

Integrate (x+3)^(1/2) .dx

[whiteboard feature does not seam to be working here] 

Here we need to make a U sibstitution. So we take (x+3) and make this equal U so we now have the integral of u^1/2   . dx

In order to s...

CZ
Answered by Callum Z. Maths tutor
3817 Views

How do you form the pluperfect tense?

  • The pluperfect, much like the passé composé, is a compound tense (i.e. made up of two parts). The first is the auxiliary verb (avoir or être) and the second is the past participle. For this example,...
DF
Answered by Darcy F. French tutor
2863 Views

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