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What is an exothermic reaction?

An exothermic reaction produces excess heat as the reactants turn to products. This means that the temperature of the glass flask would rise as the reaction occurs. The net change in energy during a react...

Answered by Nicky M. • Chemistry tutor

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What is the difference between unconditional and conditional probability?

Unconditional probability is a measure of the liklihood of a particular outcome relating to a series of independent events, where the outcome of one does not effect the outcome of another. For example, co...

Answered by Oliver H. • Maths tutor

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If a cuboid of width and height-8m with a volume of 896m^3, work out the length of the cuboid and distance between two opposite points

Length=L 896= 8x8xL => L=896/64 => L=14
Distance between two opposite points = 3D TrigD=sqrt(8^2+8^2+14^2) =sqrt(324) =18

Answered by Declan C. • Maths tutor

2308 Views

20% of 14,000

For any percentage that is a factor of 10 you can always start off by dividing by 10.So for example, 20%, 30%, 40% of a value, you always start off by diving by 10.In this case we divide 14,000 by 10 = 14...

Answered by yasmin D. • Maths tutor

3359 Views

Renee buys 5kg of sweets to sell. She pays £10 for the sweets. Renee puts all the sweets into bags. She puts 250g of sweets into each bag. She sells each bag of sweets for 65p. Renee sells all the bags of sweets. Work out her percentage profit.

To find the percentage profit, we must first find the amount of money she receives from the sale of the bags of sweets.This is equal to the number of bags sold multiplied by the sale price of each bag.The...

Answered by marcus b. • Maths tutor

14779 Views