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Give reasons for the increase in ionisation energy across a period in the table of elements.

Marks awarded for mention of outer most shells of electrons, shielding effects along side distance from nucleus of respective atoms as well as increased positive charge due to increased number of protons ...

JS
Answered by Jack S. Chemistry tutor
1597 Views

Find the gradient of the curve y = sin(2x) + 3 at the point where x = pi

This is a question that relates to the topic of differentiation. Typically students encounter this topic near the end of the first term of the first year of their A Level.The equation of the curve, y = si...

AS
Answered by Agnieszka S. Maths tutor
5063 Views

Describe the structure of proteins, and the bonds involved.

Proteins have three or four levels of structure, in increasing complexity. Primary structure is the sequence of amino acids that the protein is made up of; secondary structure is either alpha-helices or b...

Answered by Biology tutor
2476 Views

How many fission event occur per second if a Uranium 235 Nuclear Reactor outputs 210MW of energy? Average Binding Energy per Nucleon of Uranium 235- 7.6 MeV Average Binding Energy per Nucleon of Products-8.5 MeV

Binding Energy is the Energy released or used when an Atom is formed or broken respectively Difference in Binding Energy = 0.9 Mev 235 nucleons in 1 atom of Uranium235 x 0.9 Mev = 211.5 MeV per Event 210 ...

OM
Answered by Oliver M. Physics tutor
2494 Views

Explain why the velocity of a car moving at a constant speed around a bend changes.

Velocity is a vector quantity, that is, it is fully described by magnitude and direction. Even though the car moves at a constant speed, its direction varies as it moves around the bend. Since there is a ...

NA
Answered by Nicholas A. Physics tutor
10264 Views

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