Answer:
6 & 7
Step-by-step explanation:
Given data:
Volume of solution measured = 0.0067 L
To determine:
The number of significant figures
Significant figures are the number of digits that accurately describe a measured value.
As per the rules:
All non-zero digits are significant
Leading zero's i.e. the zero's after a decimal which comes before a non-zero digit are not significant
Hence in the given value 0.0067, there are 2 significant figures (6 &7)