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Explain the flow of blood through the heart and label the diagram (of the heart and its chambers)

The heart has 4 main chambers; the right and left atrium, and the right and left ventricle. Each receive blood and pump blood from and to different parts of the body. The right atrium receive de-oxygenated b...
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Answered by Tasnima B. • Biology tutor
7000 Views

Explain the need for a temperature compromise in the Haber Process: N2(g) + 3 H2(g) ⇌2 NH3(g) (ΔH = -92 kJ mol-1)

The Haber process is used to produce ammonia (NH3), so we want the equilibrium position to be as far over to the right hand side of the equation as possible to maximise the yield of NH3. As the enthalpy for ...
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Answered by Yulia E. • Chemistry tutor
15290 Views

The sides of a rectangle are x and (x+2), where x>0 the area of the rectangle is 8, what is the value of x?

X*(X+2) = 8X 2 + 2X = 8X 2 +2x-8=0 S 2P -8N 4, -2(X+4)(X-2)X=-4 X=2X can only be positive in this case so X=2
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Answered by George G. • Maths tutor
3362 Views

What happes in mitosis?

Steps: Use diagrams to draw each step 1.Interphase (think 'I' is also a number 1 to start!) DNA has been copied (late G2 phase). Chromosomes are now existing as 2 pairs called sister chromatids but can't bee...
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Answered by Kirsty H. • Biology tutor
3269 Views

Explain how electricity is conducted in a metal.

Metals have a giant metallic structure, with regular closely packed layers of positive ions in a 'sea' of delocalised electrons. What this means is that metals have a large number of positive ions, in a regu...
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Answered by Zeeshan K. • Chemistry tutor
11392 Views