if the pressure, volume, and the number of moles of a gas are known, which is needed to calculate the universal gas constant fro
2 answers:
Answer: Temperature
Explanation:
According to the ideal gas equation, which is a combination of Boyle's law, Charle's law , Gay lussac's law and Avogadro's law.
P = Pressure of the gas
V= Volume of the gas
T= Temperature of the gas
R= Gas constant
n= moles of gas
Thus if pressure, volume and the number of moles of a gas are known, temperature is needed to calculate the gas constant.
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Answer:
30 μmol/L
Explanation:
<em>A chemist prepares a solution of barium chloride by measuring out 8.9 μmol of barium chloride into a 300mL volumetric flask and filling the flask to the mark with water. </em>
<em> Calculate the concentration in μmol L of the chemist's barium chloride solution. Round your answer to 2 significant digits.</em>
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The chemist has 8.9 μmol of solute (barium chloride) and he adds water until the mark of 300 mL in the container, which is the volume of the solution. We will need the conversion factor 1 L = 1000 mL. The concentration of barium chloride in μmol/L is: