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Please describe an Ionic Bond

The mutual electrostatic attraction between pairs of oppositely charged ions. Usually the metal atom loses electrons to become a positively charged cation where as the non metal atom gains electrons to becom...
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Answered by Orlando M. • Chemistry tutor
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How do I structure an effective essay?

A well structured essay opens with the author's intention; in the first paragraph, you outline what the following essay is about. For example, when comparing two poems, the opening paragraph will mention bot...
Answered by • English Literature tutor
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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

3+4+5=12,72/12=6,3x6=18, 4x6=24,Area=1/2 x 18 x 24=216
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Answered by Kamil Z. • Maths tutor
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How do I use the 把 (bǎ) sentence structure?

The 把 (bǎ) sentence structure is useful for constructing sentences where the focus is on the result of an actionIt's very common in Mandarin but can feel a bit strange for english speakers as the verb is rig...
Answered by • Mandarin tutor
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How is the cardiac cycle regulated by the heart itself?

The heartbeat is started at a specialised area of the right atrium, known as the sinoatrial node (SAN) ; the SAN sends out the waves of depolarisation, resulting in contraction of the cardiac muscle. These w...
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Answered by Emma B. • Biology tutor
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