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what amount of heat would need to be added to 5.0 x 103 g of water to change its temperature from 21c to 84c?
How many moles of CO(NH2)2 are present in 145 g of water, if the freezing point of the solu- tion is -4.02?C? kf (water) = 1.86 K · kg/mol.
Choose an Oligopoly and describe the industry and explain the general pattern of change of the particular market model and hypothesize the basic short-run and long-run behaviors of the model in the industry you have chosen in a "market economy."
Using the Binomial Distribution, find the probability that if Air Northeast books 21 people on a flight, not enough seats will be available for all booked passengers.
Compare the change in the quantity of raw steel exchanged at the market level with the change in raw steel produced by a representative firm. How do you explain this difference?
Fairmont Inc. uses an accounting system that charges costs to the manager who has been delegated the authority to make decisions concerning the costs.
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution.
Executives estimate, for the first year, that they will have gross revenues of $500K, total costs of $300K, $30K in tax deductions and a one-time start-up credit of $8K. What will the company pay in income tax?
What is the mass of 8.00 1022 molecules of tetraphosphorus decaoxide? (b) How many P atoms are present in this sample?
Calculate the expected annualized compound rate of return over the five years for each bond. Which bond offers the higher expected compound rate of return?
study where a drug was given to 10 patients and a placebo to another group of 10 patients to determine if the drug has an effect on a patient's illness?
Explain the characteristics of a single, double, and triple bonds including why they form
Draw the abbreviated structural formula of the products of the complete hydrolysis of lidocain
The decomposition of potassium chlorate (KClO3 ) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 24.1 mol of oxygen?
Explain the fact that even though dibenzoylmethane (C6H5COCH2COC6H5) is not a methyl ketone, it gives a positive iodoform test when treated with the NaOH and I2.
Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively.
Important information about Organic molecules, What is meant by a molecules "handedness"? Can all organic molecules exhibit this property? What makes such a property possible?
Determine mass of water is contained in 2.8 Litres of the vapor in this solution at 55 degree celcius temperature express your answer in grams
What will be the velocity of the escaping electrons under these conditions? What is the de Broglie wavelength of the escaping electrons?
What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solutio.
A buffer that contains 0.55 M base, B, and 0.30 M of its conjugate acid, BH+, has a pH of 8.94. What is the pH after 0.0020 mol HCl is added to 0.25 L of this solution.
Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide.
A 30.5-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0°C in an insulated coffee cup with a heat capacity of 9.2 J/K.
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