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What is the difference between the primary and secondary immune response?
The Primary Immune Response occurs at first contact with the pathogen.
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How to solve a simple simultaneous equation
Solving simultaneous equations: Example Question:Equation 1 ---> 2y – 4x = 2Equation 2 ---> 4y – 6x = 10 Find the unknown quantities, x and y. Solution:
Define the "standard enthalpy change of atomisation".
This is a standard definition question that is relatively common in A level papers.
DG
Answered by Daniel G. • Chemistry tutor
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