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How do species change over time?

Species change over time by a process called natural selection. This is commonly associated with Darwin, as he wrote about it in his book "On the origin of species". Evolution (the change of a s...

Answered by Ellora G. • Biology tutor

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Solve the equation to 2 two decimal places: (2x+3/x-4 ) - (2x-8/2x+1) = 1

(2x+3/x-4 ) - (2x-8/2x+1) = 1 (2x+3/x-4) = 1 + (2x-8/2x+1) [Add (2x-8/2x+1) to each side]2x+3= x-4 + (2x-8)(x-4)/2x+1 Times both sides by (x-...

Answered by Jude K. • Maths tutor

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Starting with mRNA in the cytoplasm, how are polypeptides produced?

The mRNA binds to a ribosome at the start codon. (1) The ribosome has a space for a tRNA molecule with a three base anticodon to bind to the complementary codon on the mRNA.(2) The tRNA brings the specifi...

Answered by Alice T. • Biology tutor

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Simplify a^4 x a^5

Question = Simplify a⁴ x a⁵-------------------------------------------So here we have two 'groups' of a being multiplied together. We can rewrite a⁴ and a⁵ as t...

Answered by Finn A. • Maths tutor

7312 Views

CH3OH + 1.5O2 -> CO2 + 2H2O. Using the information from Table 10 of the Data Booklet, determine the theoretical enthalpy of combustion of methanol.

By definition, ΔH°_rxn = Σ ΔH°_f (products) − Σ ΔH°_f (reactants).The enthalpy of combustion is the same as the enthalpy of reaction in this case. From Table 10, we can get t...

Answered by Mark C. • Chemistry tutor

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