Exams & Certification

is clo2-, asf6-, sebr3+, i3-, o3, icl4+ and xebr4 polar or non polar? The Correct Answer and Explanation is : To determine whether the given molecules/ions are polar or nonpolar, we need to analyze their molecular geometry and electronegativity differences. A molecule is polar if it has an asymmetrical shape that creates a net dipole […]

Draw the Lewis structure for AsF 6 ? in the window below and then answer the questions that follow. – Do not include overall ion charges or formal charges in your drawing. Draw the Lewis structure for IBr 3 ? in the window below and then answer the questions that follow. What is the electron-pair

Match the accounting terms on the left with the corresponding definitions on the right (This exercise links back to Chapters 2 & 3).Answer – a. b. c. d. e. f. g. Accounts receivable The Correct Answer and Explanation is : Correct Answers: Explanation: Each of these accounting terms relates to specific financial transactions in a

The importance of synchrony is that infants learn to: connect an external state with a facial expression. disengage with their caregivers. be attuned with their caregivers with moment by moment responses. understand their own emotions. The Correct Answer and Explanation is : Correct Answer: Be attuned with their caregivers with moment-by-moment responses. Explanation: Synchrony is

Calculate the mass of barium sulfate (BaSO4, molar mass = 233.43 g/mol) that can be produced when 350.0 mL of a 0.100-M solution of barium chloride (BaCl2) is mixed with 100.0 mL of a 0.100-M solution of iron(III) sulfate (Fe2(SO4)3)?a. 2.33 gb. 7.00 gc. 3.50 gd. 2.85 g The Correct Answer and Explanation is :

Work is expressed as force times distance. There is a gain in energy when work is done. In terms of energy, what happens to the work done in pushing an object across a level floor with a constant force? A 50-kg meteor is moving in outer space. If a 12-N force is applied opposite the

Modulo is an operation that finds the remainder after division. In MATLAB the function mod(x,y) does this operation, and rounds up to the nearest integer. We know that 1/2 = .5, therefore in MATLABmod(1,2) = 1 (remember, mod(x,y) rounds up). If 2 numbers are divisible, mod will return 0. Write a MATLAB program that finds

Which of the following are dimensionless physical quantities?Thermal conductivityTemperatureAmount of substanceDensityDynamic viscosityReynolds No. (Dryness fractionSpecific enthalpyRatio of specific heat capacitiesMach No. ( Ma)FrequencySpecific heat transferEntropy (S)Strain The Correct Answer and Explanation is : Dimensionless Physical Quantities from the Given List: The following quantities are dimensionless: Explanation: Dimensionless physical quantities are those that do not have

GDP calculations do not directly include the economic costs of environmental damage—for example, global warming and acid rain. Do you think these costs should be included in GDP? Why or why not? How could GDP be amended to include environmental damage costs? The Correct Answer and Explanation is : Should Environmental Damage Costs Be Included

Combine the different anatomical terms to describe a “bullet wound.” Assume that you are acting as coroner, and you have a victim with three gunshot wounds. For each “bullet wound,” describe the location of the wound using at least three directional terms and as many regional terms as possible, following this example. As coroner, you