Calculate the density of a liquid in g/mL to the correct number of significant digits, if a flask containing 9.55 mL of the liquid weighs 157.2 g with the liquid and 148.4 g when empty.

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Calculate the mass of the liquid by subtracting the mass of the empty flask from the mass of the flask with the liquid: \( m_{\text{liquid}} = m_{\text{flask with liquid}} - m_{\text{empty flask}} \).

Substitute the given values into the equation: \( m_{\text{liquid}} = 157.2\, \text{g} - 148.4\, \text{g} \).

Determine the volume of the liquid, which is given as 9.55 mL.

Use the formula for density: \( \text{Density} = \frac{\text{mass}}{\text{volume}} \).

Substitute the mass of the liquid and the volume into the density formula to find the density in g/mL, ensuring the answer is reported with the correct number of significant figures.

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