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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
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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
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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
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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
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There are two isotopes of element A. Information about the two isotopes is shown in Table 4. Table 4 Mass number of the isotope 6 7 Percentage abundance 92.5 7.5 Use the information in Table 4 to calculate the relative atomic mass of element A. Give your

92.5/100 x 6 = 5.557.5/100 x 7= 0.5255.55 + 0.525 = 6.075= 6.08 (2dp)
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Answered by Natasha C. • Chemistry tutor
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