Solution Found!
Carry out the following operations as if they
Chapter 1, Problem 1.36(choose chapter or problem)
Carry out the following operations as if they were calculations of experimental results, and express each answer in the correct units with the correct number of significant figures: (a) 7.310 km 4 5.70 km (b) (3.26 3 1023 mg) 2 (7.88 3 1025 mg) (c) (4.02 3 106 dm) 1 (7.74 3 107 dm) (d) (7.8 m 2 0.34 m)/(1.15 s 1 0.82 s)
Questions & Answers
QUESTION:
Carry out the following operations as if they were calculations of experimental results, and express each answer in the correct units with the correct number of significant figures: (a) 7.310 km 4 5.70 km (b) (3.26 3 1023 mg) 2 (7.88 3 1025 mg) (c) (4.02 3 106 dm) 1 (7.74 3 107 dm) (d) (7.8 m 2 0.34 m)/(1.15 s 1 0.82 s)
ANSWER:Step 1 of 5
The non-place-holding digits in a reported measurement are called significant figures.
We apply general rules of significant figures.
* All nonzero digits are significant figures
* Interior zero i.e zero between two numbers are significant
* Trailing zero i.e zero after a decimal point are significant
* Leading zero i.e zero to the left of the first nonzero number is not significant. They only serve to locate the decimal point .
* Zero at the end of a number but before a decimal point is ambiguous and should be avoided by using scientific notation.