Exams & Certification
The electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d12 4p6 A) is valid and represents the ground state of an atom B) is not valid becuase it violates the Pauli principle C) is valid and represents an excited state of an atom The correct answer and explanation is : The correct answer is C) […]
The electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d12 4p6 Read More »
A 40 kVA, 6600/250 V single-phase transformer has the following parameters: Primary winding resistance = 10 OSecondary winding resistance = 0.02 OTotal leakage reactance (referred to the primary) = 35 ORequired:Calculate the full-load voltage regulation at a power factor of 0.08 lagging.Draw the phasor diagram representing the given transformer conditions. The correct answer and explanation
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Which of the following statements best describes inertia? A Inertia depends on the size of an object.B Inertia is proportional to speed.C Inertia is a vector quantity.D Inertia is a resistance to change in motion. The correct answer and explanation is : The correct answer is D: Inertia is a resistance to change in motion.
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How many mL of 4.50M sodium hydroxide must be acetic acid solutions to make a buffer with pHb. How many mL of 4.50 M sodium hydroxide must be added to 250.0 mL of a 0.200 Mc. Calculate the pH of a formic acid solution that contains 1.45% formic acid by mass.Question 4a. The pH of
The molecules PF5 and AsF5 exist, but the analogous molecule NF5 does not. Why not? The correct answer and explanation is : The molecule NF₅ does not exist, unlike PF₅ (phosphorus pentafluoride) and AsF₅ (arsenic pentafluoride), due to a combination of factors related to atomic size, bonding capabilities, and the lack of sufficient orbital overlap.
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The Allowance for Doubtful Accounts account is a contra asset account to Accounts Receivable. True False The correct answer and explanation is : True. The Allowance for Doubtful Accounts is indeed a contra asset account that offsets the Accounts Receivable balance on a company’s balance sheet. This account represents management’s estimate of the portion of
Bromine (Br) is atomic number 35. How many protons, neutrons, and electrons in a negative ion of Bromine-79 (Br” -79)? A 35p. 44n, 35e B 35p, 44n, 36e C 35p, 79, 36e. D 79p, 35, 36e The correct answer and explanation is : The correct answer is B: 35p, 44n, 36e. Explanation: Bromine (Br) has
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Find the frequency f in terahertz of visible light with a wavelength of 535 nm in vacuum. f= THz What is the wavelength in centimeters of electromagnetic microwave radiation whose frequency is 7.25 GHz? The correct answer and explanation is : To calculate the frequency ( f ) of visible light with a wavelength of
Find the frequency f in terahertz of visible light with a wavelength of 535 nm in vacuum Read More »
The two key parties to a promissory note are the a. maker and a bank.b. debtor and the payee.c. maker and the payee.d. sender and the receiver. The correct answer and explanation is : The correct answer is c. maker and the payee. A promissory note is a written promise made by one party (the
The two key parties to a promissory note are the Read More »
An optimal combination of decisions relating to investment, financing and dividends will maximize the value of the firm to its shareholder. The correct answer and explanation is : The correct answer to the statement is “The goal of financial management is to maximize the value of the firm to its shareholders”. Explanation: In financial management,