The temperature of neon gas in the sample should be calculated. Concept Introduction: According to ideal gas equation: P V = n R T Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature. The value of Universal gas constant can be taken as 0.082 L atm K − 1 mol − 1 . Mass of gas can be calculated from number of moles and molar mass as follows: m = n × M Here, n is number of moles, m is mass and M is molar mass.

Question

Propagation of uncertainty. You have a stock solution certified by the manufacturer to contain 150.0±0.03 µg SO42-/mL. You would like to dilute it by a factor of 100 to obtain 1.500 µg/mL. Calculate the uncertainty in the two methods of dilution below. Use the following uncertainty values for glassware: Glassware Uncertainty (assume glassware has been calibrated and treat the values below as random error) 1.00 mL volumetric pipet 0.01 mL 10.00 mL volumetric pipet 0.02 mL 100.00 mL volumetric flask 0.08 mL Transfer 10.00 mL with a volumetric pipet and dilute it to 100 mL with a volumetric flask. Then take 10.00 mL of the resulting solution and dilute it a second time with a 100 mL flask. 2. Transfer 1.00 mL with a volumetric pipet and dilute it to 100 mL with a volumetric flask.

Answer 1

Question

Chapter 13, Problem 54QAP

Interpretation Introduction

Interpretation:

The temperature of neon gas in the sample should be calculated.

Concept Introduction:

According to ideal gas equation:

PV=nRT

Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.

The value of Universal gas constant can be taken as 0.082 L atm K−1 mol−1.

Mass of gas can be calculated from number of moles and molar mass as follows:

m=n×M

Here, n is number of moles, m is mass and M is molar mass.

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