The physical state of a gaseous substance is specified by giving its volume, pressure, temperature and chemical amount. There are two equations interrelating these four variables, namely the perfect gas equation and the van der Waals equation. 2.0 mol C2H6 is confined at 273.15K in 22.414L. What is the repulsive term (in atm) of the gas under this condition when it behaves as a van der Waals gas? R = 8.314 J/molK = 0.08206 L atm/molK a = 5.507 L2atm mol-2 b = 6.51*10-2 L mol-1数值题

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There are two adjustable parameters, 𝑎 and 𝑏 that appear in the Van der Waals gas equation of state.  Based on what you understand their roles to be, how would they compare between C F 4 and C F 2 C l 2 ?  (The carbon atom is central in each compound.)

A physical chemist happened to know that the 𝑏 value for a gas that followed the Van der Waals equation was 𝑏 = 0.05 L / m o l .  But he didn't know the 𝑎 value.  He got 1.00 mole of the gas at a pressure of 1.00 atm at 10.0 °C and found that it had a volume of 23.0 L.  Based on this single measurement, what is the probable value of 𝑎 ?  Note that ( 𝑝 + 𝑎 𝑛 2 𝑉 2 ) ( 𝑉 − 𝑛 𝑏 ) = 𝑛 𝑅 𝑇 is the Van der Waals equation of state, 𝑅 = 0.08206 L a t m m o l − 1 K − 1

Which of the following describes the van der Waals equation of state?

Pedersen Industries wants to initiate a new project. To facilitate the project, an increase in cash of $20,000 will be required and the firm needs to build up $15,000 in inventory. The firm is expecting revenues of $500,000 per year and cost of goods sold (COGS) of $400,000. Pedersen Industries is expecting that Accounts Receivables (AR) will account for 5% of annual sales and Accounts Payables (AP) will account for 10% of COGS. All these changes will occur in year t=1. ​ What is the incremental cash flow effect from the change in Net Working Capital (NWC) in year 1?

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