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An ideal gas undergoes a transformation in which both its pressure and volume double. How many times does the root mean square speed of the gas molecules increase?

In solving this, the ideal gas law must be considered (pV=nRT). Since both the pressure and volume of the gas have doubled, the product p*V (pressure times volume) has increased four times from the initial t...
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Answered by Andrei R. • Physics tutor
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Give the reagents and conditions needed to convert a secondary alcohol into a ketone. Name the process which occurs during the conversion.

Reagents: Potassium dichromate and concentrated sulfuric acid (catalyst) Conditions: Heat under reflux The process which happens when a secondary alcohol is converted to a ketone is called oxidation.
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Answered by Lucy S. • Chemistry tutor
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Consider a differential equation where dx/dt = -axt. Find an equation for x(t).

Starting from dx/dt = -axt. We treat dx and dt as infinitessimal factors of x and t, therefore fundemental mathematical operations still apply. Rearranging the equation to group x, dx and t, dt. 1/x dx = -at...
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Answered by Cal L. • Maths tutor
5110 Views

How do you expand brackets? eg. (2x+3)(3x+4)

Use the FOIL method for: (2x+3)(3x+4) F irst e.g. multiply first two numbers (2x and 3x) O utside e.g. 2x and 4 I nside e.g. 3 and 3x L ast e.g. 3 and 4
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Answered by Naba C. • Maths tutor
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How do you differentiate a function comprised of two functions multiplied together?

The product rule is useful when you’re dealing with a function comprised of two functions multiplied together. Generally, if you have a function of the form y = f(x)g(x), then the derivative of the function ...
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Answered by Elliot G. • Maths tutor
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