What percentage error occurs when using a 10 ml pipet that contains a drop of water with a volume of 0.005 ml?

To determine the percentage error when using a 10 ml pipet that contains a drop of water with a volume of 0.005 ml, the formula for percentage error is applied, which is calculated as:

[

\text{Percentage Error} = \left( \frac{\text{Error}}{\text{True Value}} \right) \times 100

]

In this context, the "Error" is the volume of the water drop, which is 0.005 ml, and the "True Value" is the volume of the pipet, which is 10 ml. Plugging in these values, we get:

[

\text{Percentage Error} = \left( \frac{0.005 \text{ ml}}{10 \text{ ml}} \right) \times 100 = 0.05%

]

However, considering the choices available, it will be more illustrative to understand how the presence of the drop of water can impact measurements. In practice, when using a pipet, even minute volume discrepancies can become significant depending on the context of measurement. The drop represents a substantive error in terms of proportion to the entire volume being measured, which leads us to interpret the nuances of