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Bag A contains £7.20 in 20p coins. Bag B contains only 5p coins. The number of coins in bag B is three-quarters of the number of coins in bag A. How much money is in bag B? (in £s)

We have been told that there is £7.20 in bag A, to simplify this, you can begin by turning this into pennies as well. So we have 720p in bag A. We need to know how many 20p coins this is, so we will divide 7...
JK
Answered by Jessica K. • Maths tutor
5173 Views

What factors affect rate of reaction?

In order for a reaction to occur, particles must 1. COLLIDE with each other 2. with sufficient KINETIC ENERGY (energy greater than or equal to the ACTIVATION ENERGY). This is known as Collision Theory. There...
AH
Answered by Amy H. • Chemistry tutor
10251 Views

How do I know when to use SER or ESTAR

Both SER and ESTAR mean TO BE in Spanish but are used in different situations. Ser gives a more permenant meaning than estar. Here's an example: está enferma and es enferma both mean she's ill literally. You...
AH
Answered by Amy H. • Spanish tutor
9177 Views

Is there an easy way to answer questions about oxidation and reduction?

YES! OILRIG stands for Oxidation is loss, Reduction is gain This means that when a chemical is OXIDISED it has LOST an electron and when a chemical is REDUCED it has GAINED an electron. An electron carries a...
HC
Answered by Hannah C. • Chemistry tutor
2617 Views

Translate: Phaethon erat filius Apollinis. olim Phaethon tristis erat quod amici eum deridebant. ‘pater tuus non est deus solis!’ dicebant.

This is actually a Latin question but there was no option for Latin for some reason. Let's break this down to make it easier. When struggling with a translation, I always find it helps to start a new line wh...
TH
5346 Views