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GCSE

How many electrons are in a chloride ion Cl- and how are they arranged in the shells? a periodic table can be used.

18 total2,8,8(2,8,7 in chlorine atom, one more from another atom to form the negative charge and filling the third shell)

MM
Answered by Melissa M. Chemistry tutor
5462 Views

How is a sperm cell adapted to its role?

Since the sperm cell's role is to swim to the egg and fertilise it, it requires a tail for movement. The middle piece is full of mitochondria to provide energy so that the sperm cell can swim and reach th...

PB
Answered by Patricia B. Biology tutor
9294 Views

Solve the simultaneous equations, 2x-3y=14 and 3x+4y=4

When asked to solve we have to find the value of x and the value of y, as they are simultaneous equations we know the value of y in equa...

SB
Answered by Shireen B. Maths tutor
5213 Views

What is/what is the difference between, transcription and translation?

Transcription is the process of of copying DNA information from a DNA strand, to form an mRNA, that can later be used to produce a protein in translation. Transcription will involve the double helix of DN...

TP
Answered by Tasneem P. Biology tutor
3634 Views

What is an idiom?

An idiom is a colloquial phrase or saying. You should try to include them in your writing to demonstrate cultural awareness and range of language. For example, 'ser un pan comido' (to be a piece of cake) ...

GO
Answered by Gabriel O. Spanish tutor
2143 Views

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