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Why does boiling point decrease down group 1 in the periodic table? [3 marks]

Atomic radius increases Although nuclear charge increases, this is outweighed by the increased shielding from inner shell electrons Therefore, nuclear attraction to the delocalised electrons decreases (metal...
Answered by • Chemistry tutor
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Analiza el papel desempeñado por uno de los personajes en 'Bodas de Sangre'. ¿Cómo contribuye al desarrollo de la obra?

Los personajes de 'Bodas de Sangre' adquieren valor de acuerdo con sus funciones en el tema principal de esta obra lorquiana: la dicotomía entre el amor y la muerte. Analizamos el personaje de la Madre: el h...
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Answered by Sebastian R. • Spanish tutor
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A gold leaf electroscope with a zinc plate top is charged by briefly connecting it to the negative electrode of a high-voltage supply. Explain how the gold leaf will appear and how the leaf can be caused to drop again.

The gold leaf will diverge from the metal stem. This is because connecting the negative electrode to the zinc plate, causes an influx of electrons to flow into the electroscope. When the electrode is removed...
RN
Answered by Rebecca N. • Physics tutor
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Explain the importance of the cytoskeleton's role in providing mechanical strength to cells, aiding transport within cells and enabling movement of the cell.

The cytoskeleton is an internal framework within the cell made up of two different protein fibres: microfilaments and microtubules. It has a number of different functions including: providing mechanical stre...
Answered by • Biology tutor
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Prove the square root of 2 is irrational

Explain proof by contradictionAssume sqrt(2) is rational i.e. can be expressed as the ratio of two integers: a/bUse algebraic steps to find this statement results in a contradictionirrationality proved by co...
JP
Answered by Joseph P. • Maths tutor
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