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What are the differences between exothermic and endothermic reactions?

Reactions are all about the formation and the breaking of bonds between atoms. The formation of bonds within a system causes energy to be released whilst the breaking of bonds requires energy to be applie...

Answered by William L. • Chemistry tutor

5082 Views

Make a the subject of a+3=(2a+7)/r

Times both side by r to get ar+3r=2a+7 Subtract 2a and 3r from both side to bring a to one side, ar-2a=7-3r Factorise the left handside, a(r-2)=7-3r Divide both side by r-2, a=(7-3r)/(r-2)

Answered by Arafatul H. • Maths tutor

4521 Views

Why does a spit not always develop into a bar in coastal landforms

Usually the action of water such as an estuary entering the ocean at a coastline provides conditions for erosion and constant flow which means sediment is washed away and transported in the sea and can no...

Answered by Emily C. • Geography tutor

3090 Views

“The Elizabethan man feared powerful and rebellious women.” Discuss this statement in reference to the presentation of Katherina Minola in ‘The Taming of the Shrew.’

The patriarchal society of Elizabethan times meant there was a certain expectation for women to be submissive and conform. In The Taming of the Shrew, Shakespeare creates the opposite to this ide...

Answered by Annabelle S. • English Literature tutor

4132 Views

As one of the body's homeostatic mechanisms, blood glucose levels are controlled for by the hormone insulin. Explain how the regulation in blood glucose differs in a healthy individual and in somebody with type 1 Diabetes?

After the ingestion of a meal containing carbohydrate, glucose is released into the blood stream from the gut. An increase in blood glucose stimulates the secretion of the hormone, Insulin from the pancre...

Answered by Hannah S. • Biology tutor

4206 Views