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Back to Edexcel Mathematics Paper 1 Sample Assessment Home 
Paper 1 Higher - Sample Assessment Q11
11) One uranium atom has a mass of 3.95 × 10–22 grams.

(a) Work out an estimate for the number of uranium atoms in 1kg of uranium.

(3 marks)

(b) Is your answer to (a) an underestimate or an overestimate?
Give a reason for your answer.

(1 mark)

(Total for Question 11 is 4 marks)
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