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What happens when two atoms of potassium react with one atom of sulphur?

Bonding between this compound will be ionic as potassium is a metal and sulphur is a non-metal.Therefore electrons are transferred from potassium to sulphur as metals must lose electrons to gain a full outer...
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Answered by Amrit S. • Chemistry tutor
8298 Views

Why do many young people leave Spain and come to Germany? (Corresponding text below)

CORRESPONDING TEXT IN PAPER: Jedes Jahr verlassen immer mehr junge Spanier ihre Heimat. Viele von ihnen kommen nach Deutschland, weil mehr als die Hälfte der jungen Spanier zwischen 15 und 24 keine Arbeit in...
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Answered by Katie B. • German tutor
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Describe how the ancestors of modern lemurs may have evolved into the species shown in Figure 14. (June 2018, 5 marks)

The ancestors of modern Lemurs arrived in Madagascar and spread across the island. At some point after this, the once contiguous population became fragmented into three separate populations. Each of these po...
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Answered by Joseph B. • Biology tutor
15151 Views

Find the first derivative of 2x^3+5x^2+4x+1 (with respect to x)

In differentiation, your goal is to reduce the power of the terms that you're differentiating with respect to (in this case, x).The method for doing this is:Multiply the power of your x term by its coefficie...
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Answered by Abigail R. • Maths tutor
4587 Views

Expand and simplify (3x + 5)(2x - 4)

We’ve got to remember that expand means to multiply out, so that word is really important because it tells us what operation to use. The order we multiply in can be remembered using the word FOILS, which sta...
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Answered by Jemima C. • Maths tutor
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