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Explain why the first ionisation energy of phosphorous is different to that of sulfur

Sulfur has an atomic number of 16, phosphorous is 15. The first ionisation energy of a periodic row usually increases left to right. This is because number of protons increases thus increasing nuclear charge...
HS
Answered by Hollie S. • Chemistry tutor
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Speaking exam: Parler français a une forte importance internationale (in English : Speaking French has strong international importance)

L'importance politique de parler Français, puissance européenne et mondiale . (The political importance of speaking French, language of a European and international political actor )Deuxième puissance dans l...
LV
Answered by Louis V. • French tutor
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How would you form a sentence using direct and indirect object pronouns together (double object pronouns)?

It is possible to simplify or shorten a sentence by using pronouns to replace objects. For example: Est-ce que Jean a donné la feuille à Pierre? Instead of responding : "Oui, Jean a donné la feuille à P...
Answered by • French tutor
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The allele y occurs with a frequency of 0.8 in a population of clams. Give the frequencies of the genotypes YY, Yy and yy.

To do this we use the Hardy-weinburg equation.p 2 +2pq+q 2 =1frequency of y = q, frequency of Y=pFirst we work out the frequency of Y(p)p+q=11-0.8=0.2p=0.2Then we plug our p and q values into the equation to...
Answered by • Biology tutor
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What are the three main properties of the genetic code?

Triplet code - a sequence of three bases (called a codon) codes for an amino acid. Degenerate code - more than one codon can code for a single amino acidnon-overlapping - the bases in the genetic code are re...
Answered by • Biology tutor
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