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Why do ionic compounds conduct electricity when molten or in solution, but not when solid?

Substances can conduct electricity if there is a way for charge to flow through that substance. For a substance to conduct electricity, it needs to contain some sort of charge carrier - this could be an e...

JQ
Answered by James Q. • Chemistry tutor
95057 Views

Explore how the “victims” are created and used by the authors of both texts, in Toni Morrison’s “Beloved” and Oscar Wilde’s “The Picture of Dorian Gray”

[Example introduction]Victimisation is a key trope within literature, particularly in dealing with the supernatural. Both Wilde’s “The Picture of Dorian Grey” and Morrison’s “Beloved” grapple with the con...

MB
Answered by Molly B. • English tutor
7470 Views

Why does gravitational potential energy have a negative value?

The negative value stems from the definition of gravitiational potential energy which states that it is equal to the work done by the gravitational field moving a body to its given position from infinity....

KP
Answered by Kush P. • Physics tutor
4455 Views

3/5 of a number is 162. Work out the number.

If we call the unknown number 'x' we can put it in to an equation to work it out as we known 5/3 of the number is 162.5x/3 = 162then times each side of the equals symbol by 5 to get (3x/5) 5 = 162

LM
Answered by Lucy M. • Maths tutor
13658 Views

what is a catalyst

A substance that increases the rate of a reaction without having been used up itself in the reaction. They function by providing a lower activation energy for the reaction to begin, which is a type of thr...

SC
Answered by Samuel C. • Chemistry tutor
2043 Views

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