Question

question 3
1 pts
how many significant figures are in 2300

question 4
1 pts
how many significant figures are in 0.00678

Explanation:

Step1: Recall significant - figures rules for 2300

Non - zero digits are always significant. Trailing zeros without a decimal point may or may not be significant. In 2300, assuming no additional information, the zeros are not significant. So, the significant digits are 2 and 3.

Step2: Recall significant - figures rules for 0.00678

Leading zeros are not significant. Non - zero digits are significant. So, the significant digits are 6, 7, and 8.

Answer:

Question 3: 2
Question 4: 3