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Compare the developmental and cognitive areas of Psychology in terms of their aims of study and the studies completed in them.

The developmental area of Psychology focuses on how behaviour changes over time, as a person grows up. It has a particular focus on behaviourism (the belief that all behaviour is learned). Meanwhile, the cog...
RD
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Nitrogen reacts with hydrogen to produce ammonia. Calculate the mass of ammonia made from 84.0g of nitrogen.

(1) First, write out the equation if it is not given: N 2 + 3H 2 ---> 2NH 3 (2) Calculate the moles of nitrogen in the reaction using the information you have; in this case it is mass and relative formula...
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Answered by Thivya T. • Chemistry tutor
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What is a pathogen? and how does it cause disease?

Pathogens are microorganisms that cause disease. They may be bacteria, viruses, protists or funghi. They can infect animals and plants, causing a wide range of diseases. Pathogens, such as bacteria and virus...
HP
Answered by Hugh P. • Biology tutor
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I do not understand Le Chatelier's Principle - please help!

LeChaterlier's principle states: 'If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change'. In short, this helps us to work out HOW changi...
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Answered by James S. • Chemistry tutor
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What are the 4 main valves in the heart, and where are each of them located?

Mitral valve and tricuspid valves control blood flow from the atria to the ventricles. Mitral on the right side, and tricuspid on the left side of the heart Aortic valve controls blood flow between the left ...
HP
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