Question

Use dimensional analysis to convert 4.30 days to seconds. (Hint: Don't forget about the significant figures)

• A. 258 seconds
• B. 929,000 seconds
• C. 15,500 seconds
• D. 372,000 seconds
• E. 6,190 seconds

Answer 1

The correct option is D 372,000 seconds

1 day $=$ 24 hours
1 hour $=$ 60 minutes
1 minute $=$ 60 seconds
1 day $=24\times 60\times 60$ seconds
1 day $=86400$ seconds
4.30 days $=4.30\times 86400=371520$ seconds
The answer will have 3 significant figures as 4.30 days have 3 significant figures.
Hence, 4.30 days $=372,000$ seconds