400 m formic acid hcooh solution freezes at -0758 degrees c
400 M formic acid (HCOOH) solution freezes at -0.758 degrees C. Calculate the Ka of the acid at that temperature. (hint: assume that molarity is equal to molality. Carry out your calculations to three sig figs and round off to two for Ka).
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Calculate the aqueous solution with the highest freezing point. These are all solutions of nonvolatile solutes and you should assume ideal Van't Hoff factors where applicable
Determine the service overcurrent protection device rating and undergrounded and grounded service conductor size. Use XHHW copper conductor and 75oC device terminal ratings and allow for 25% load growth. Do not use larger than 600 kcmil conductor
You just won the state lottery. The state gives you the choice of $1,000,000 today or a 20-year annuity of $75,000, with the first payment coming one year from today. What rate of return is built into the annuity?
An airflow of 15 m3/s is to be passed through a 0.9m diameter fibreglass duct, 200m long, with one sharp right-angled bend. From manufacturer's literature, the friction factor for the duct is 0.0032 kg/m3.
The company's tax rate is 40 %. a) what is the company's cost of debt? b) what is the company's cost of equity? c) what is the company's wacc?
In addition, there are two 20 A, single-pole breakers protecting branch circuits supplying 277V lighting circuits. Is this panel classified as a power panelboard or an appliance and branch circuit panel-board.
In Europe, the standard voltage is 240 V (rms), AC, and 50 cycles/s. Suppose you take your 5.00 W electric razor to Rome and plug it into the receptacle, What is the resistance of your razor
Ray Seo has $5,000 to invest in a small business venture. His partner has promised to pay him back $8,200 in five years. What is the return earned on this investment?
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