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Describe the bonding in sodium chloride

Sodium chloride is an ionic compound formed by the strong ionic attractions between positively charged sodium ions (which have lost one electron) and negatively charged chloride ions (which have gained an el...
MF
Answered by Matthew F. • Chemistry tutor
4465 Views

How do you factorise a quadratic equation where the coefficient of x² isn't 1?

Using the formula ax 2 +bx+c, multiply the value of coefficient a, from your equation, with the value of c. Next, try to think of two factors of the number you just calculated, which also add together to mak...
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Answered by Grace R. • Maths tutor
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Translate the below passage into english "Labienus legatus statim verbis Pompeii imperatoris de proelio respondit....

Labienus, the legate, immediately responded to the words of the general Pompey about the battle
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Answered by Luke C. • Latin tutor
3350 Views

Solve the simultaneous equations. 2x + y = 18 x - y = 6

2x + y = 18x - y = 6. There are a few methods you can use to tackle simultaneous equations. The one I find the easiest is making one of the unknowns a subject and plugging it back into the other equation. In...
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Answered by Sofia U. • Maths tutor
4189 Views

What is completing the square and how do I do it?

Completing the square is a method of solving quadratic equations that can't be factorised. The end goal is to express the quadratic in the form:(x + a) 2 = -bWhich allows us to root both sides and find our s...
HJ
Answered by Henry J. • Maths tutor
4381 Views