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Compare quantities on a log scale

Question 1 of 8

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The table contains generated cases. Each displayed log value is the base-10 logarithm of the dust sample mass, measured in micrograms

Generated dust sample mass data recorded on a base-10 log scale
CaseDust sample D68Dust sample D23Dust sample D39Dust sample D19Dust sample D98
log₁₀(dust sample mass in micrograms)\(3\)\(2\)\(1\)\(4\)?
dust sample mass (micrograms)1,0001001010,0001
(a)1 mark

Use the logged values to determine how many times larger Dust sample D68's dust sample mass is than Dust sample D39's. Give the exact factor

(b)1 mark

Complete the missing logged value for Dust sample D98