Logarithms
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Question 1 of 8
1. Question
log(102) =
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Question 2 of 8
2. Question
-log(10-3) =
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Question 3 of 8
3. Question
pH is calculated by taking the -log of the [H+]. If the [H+] of a solution is 10-6 then the pH of the solution would be?
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Question 4 of 8
4. Question
Scientists plotted out the number of cells on a bacterial plate at different time points on a log scale. If the scale reads 4 at the 10 hour mark how many cells were on the plate at that time point?
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Question 5 of 8
5. Question
The decibel (dB) scale is a 10-log scale that measures the sound intensity level. This means every time you move 10 units up on the dB scale the underlying sound intensity increase by times 10. If a sound was increased from 10 dB to 40 dB then the sound intensity increased by what factor?
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Question 6 of 8
6. Question
As the pOH of a solution decreases the hydroxide concentration is increases. If the pOH goes from 8 to 3 by what factor did the hydroxide concentration change?
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Question 7 of 8
7. Question
A jet taking off creates a sound that is 130 dB while a normal conversation is around 60 dB. What is the difference between the sound intensities of the jet and normal conversation?
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Question 8 of 8
8. Question
Genome size varies from organism to organism with prokaryotes typically containing smaller genomes while eukarayotes typically have larger genomes. The figure below displays the genome size for four different organisms.
By what factor does the genome size of HIV-1 differ in comparison to Amoeba dubia?
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