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How would you determine the pH of a solution?

pH is a measure of acidity and alkalinity. In fact, pH is a logarithmic scale from 0 to 14, with 0 being acidic and 14 being alkaline. When there is a high concentration of H+ ions then the sol...

Answered by • Chemistry tutor
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Describe the difference between the absorption spectrum and the action spectrum of a plant (photosynthesis)

The absorption spectrum is the rate of absorption at different wavelengths of light by the different light absorbing pigments present. Each pigment absorbs different wavelengths of light to increase overa...

Answered by • Biology tutor
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Solve 6x – 5 = 2x + 13


6x - 5 = 2x + 13 (+5) -> 6x - 5 + 5 = 2x + 13 +5 ------> 6x = 2x + 18 (-2x) -> 6x - 2x = 2x - 2x + 18 ----------> 4x = 18 (divide 4) ->

Answered by • Maths tutor
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A cubic polynomial has the form p(z)=z^3+bz^2+cz+d, z is Complex and b, c, d are Real. Given that a solution of p(z)=0 is z1=3-2i and that p(-2)=0, find the values of b, c and d.

I will explain this choice of question and demonstrate my approach of showing the most forward way to solve this in the interview.

Answered by • Maths tutor
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Describe the structure of DNA

-DNA is a double-stranded helix-Two polynucleotide strands (that run antiparallel to each other), held together by hydrogen bonding between the complementary base pairs-Each nucleotide consists of deoxyri...

Answered by • Biology tutor
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