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How would you work out the mols of a substance?

Mols is a measure of the amount of a molecule present, chemically defined as 1/12th of an atom of carbon 12

Mols = Mass (g) / Molecular Mass (gmol^-1)

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Answered by Bilal U. Chemistry tutor
2312 Views

How should I effectively set out my essay?

An essay should always begin with a clear introduction that addresses the focus and the key terms of the question; and often provides indication of what your conclusion will be. Regardless of your conclus...

CG
1802 Views

Describe and explain what is meant by ‘natural selection’. (4 marks)

Natural selection is a theory devised by Charles Dickens. Due to the existent of alleles and genetic variation, some organisms will be better adapted for survival in their given habitat. As a result of th...

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Answered by Charlotte G. Biology tutor
3894 Views

Describe and explain the formation of an oxbow lake. (6 marks)

Oxbow lakes are most commonly found in the middle course of the river, where the river has more energy and higher discharge. A meander is first formed as a result of deposition and erosion - velocity is h...

CG
56776 Views

Describe and explain the adaptations of the alveoli for gas exchange. (4 marks)

The alveoli are highly folded in order to increase the surface area available for gas exchange. The thins walls of the alveoli and the supplying capillaries allow for a short diffusion distance, thus incr...

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Answered by Charlotte G. Biology tutor
35940 Views

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