General Questions and Answers

What does the term "Efficiency of a machine" mean? The capacity of a machine to produce heat. The electrical energy consumption cost of a machine. A measure of the effectiveness of a machine to convert available energy into useful work. The capacity of a machine to transfer energy.

President Franklin Roosevelt's judicial reform bill would have allowed him to reject a Supreme Court decision by protesting to Congress. decide which laws the Supreme Court could review. appoint as many as six additional Supreme Court justices. approve each of the nine current Supreme Court justices.

Which of the following statements is FALSE? The impulses of the nervous system travel through the neurons. The messages of the nervous system are conducted electrically. The nervous system responds faster than the endocrine system. The nervous system responds slower than the endocrine system.

Ammonium phosphate ((NH4), PO4) is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H₂PO4) with ammonia (NH₂). What mass of ammonium phosphate is produced by the reaction of 9.7 g of ammonia? Round your answer to 2 significant digits. X S ?

22) Which of the following reactions will not occur as written? A) Zn (s) + Pb(NO3)2 (aq) →Pb (s) Zn(NO3)2 (aq) B) Mg (s) + Ca(OH)2 (aq) → Ca (s) + Mg(OH)2 (aq) C) Sn (s) + 2AgNO3 (aq) → 2Ag (s) + Sn(NO3)2 (aq) 1 D) Co (s) + 2AgCl (aq) →2Ag (s) + CoCl2 (aq) E) Co (s) + 2HI (aq) → H2 (g) + Col2 (aq)

Kiss Me, Kate is an adaptation of The Taming of the Shrew in ___ form. musical play opera movie

Read the following excerpt from "The Tell-Tale Heart." "It is impossible to say how first the idea entered my brain; but once conceived, it haunted me day and night. Object there was none. Passion there was none. I loved the old man. He had never wronged me. He had never given me insult. For his gold I had no desire. I think it was his eye! yes, it was this! He had the eye of a vulture --a pale blue eye, with a film over it. Whenever it fell upon me, my blood ran cold; and so by degrees --very gradually I made up my mind to take the life of the old man, and thus rid myself of the eye forever." What is the meaning of the word "gold"? Money or property Eye of a vulture Old mans' heart Death watches

Marcus Garvey defined self-reliance as cultural interdependence. economic independence. political freedom. freedom of speech.

Frequency of a photon is 6.0x1014 s¹. What is the energy of the photon? 6.0x10¹4 J 3.98×10-¹9 J 3.98×10¹⁹ 6.63x10-34 J

For what reasons do elected officials mostly use social media? Check all that apply. to mobilize voters to reach constituents to announce campaigns to start protest movements to discuss issues and events

Read the following lines from "The Tell-Tale Heart." "I was never kinder to the old man than during the whole week before I killed him." What figurative language is used in the line above? Irony Simile Metaphor Allusion

I am a German scientist. I described the behavior of light by photons. I explained photoelectric effect by expanding Max Planck's radiation theory. Who am I? Heinrich Hertz Albert Einstein Louis de-Broglie Clinton Davisson Complete Later Complete

Which of the following compounds contain stereocenters (asymmetric C atoms) Choose all that apply. Osec-butyl methyl ether 2,2,3,3-tetramethylbutane 2,4-dimethyl-3-pentanol 2-butanol None of the Above

When 0.25g Mg(s) is added to 250mL of 3.00 mol/L HCl(aq), hydrogen gas is produced. The magnesium becomes Mg2+ (aq) ions and stays in solution. a.) Write the ionic and net-ionic equations for the reaction. b.) Calculate the mass of the hydrogen gas produced? c.) What is the concentration of each of the ions left in the solution?

A 0.145 mole sample of Mg(OH)2(aq) requires 45.0 mL of HCl(aq) for neutralization according to the reaction: 2HCl(aq) + Mg(OH)2(aq) → MgCl2(aq) + 2H₂O(l). The molarity (M) of the HCI is (pay attention to the significant figures)

Sam spends 800 J of energy to lift a 35 kg bucket of water from a well. What is the depth of the well? 1.33 m O 233 m 3.33 m 4.33 m

What type of statement is represented in the following sentence from the essay "Society and Solitude" by Ralph Waldo Emerson? "But there are metals, like potassium and sodium, which, to be kept pure, must be kept under naphtha." Factual statement Rhetoric Metaphorical statement The perspective of the writer

Many metals react with halogens to give metal halides. For example, 2 Al (s) + 3 Cl₂(g) → 2 AICI3 (s) If you begin with 13.5 g of aluminum: you will need 23.6 g Cl₂ for complete reaction and will produce 66.7 g of AlCl3. you will need 26.6 g Cl₂ for complete reaction and will produce 49.0 g of AlCl3. you will need 53.2 g Cl₂ for complete reaction and will produce 66.7 g of AICI3. you will need 11.8 g Cl₂ for complete reaction and will produce 49.0 g of AICI3.

19) The van der Waals equation for real gases recognizes that A) gas particles have non-zero volumes and interact with each other B) molar volumes of gases of different types are different C) the non-zero volumes of gas particles effectively decrease the amount of "empty space" between them D) the molecular attractions between particles of gas decreases the pressure exerted by the gas E) all of the above statements are true

Which of the following would have the highest vapor pressure under identical conditions? CH3 CH3 C8H18 CHCH CH3OH

22) Automobile air bags use the decomposition of sodium azide as their source of gas for rapid inflation: 2NaN, (s)→ 2Na (s) + 3N₂ (g). A) 68.8 g B) 78.8 g C) 88.8 g D) 98.8 g E) 108.8 g

20) The electron configuration of the atom with the most negative electron affinity is ____ A) (i) B) (ii) C) (iii) D) (iv) E) (v)

Which of the following is NOT true about the Renaissance? Every educated person was expected to be trained in music. The Church played a greater role during the Renaissance than in the Middle Ages. Humanism was emphasized during the Renaissance. The Renaissance occurred from 1450-1600

A similarity between Woodrow Wilson and Theodore Roosevelt was that both believed monopolies were bad for the country. kept the United States out of foreign wars. were candidates for two different parties. were strong champions for the environment.

Which of the following best describes Tammany Hall and other political machines in the late 1800s? dutiful weak loyal corrupt

___ waves have wavelength up to 100 km. Rayleigh Body P S

Read the following lines from "The Tell-Tale Heart." "All in vain; because Death, in approaching him had stalked with his black shadow before him, and enveloped the victim." What figurative language is used in the line above? Personification Simile Metaphor Allusion

Which of the following is an inheritable neurological disease? Encephalitis AIDS Huntington's disease Meningitis

Which of the following statements is NOT true? Impulse is measured by the total change in linear momentum produced during a collision. The forces which act on objects for a short time are called Impulsive forces. Impulse is the product of the force and the acceleration for which the force acts on the object. Hitting a ball with a bat is an example of Impulsive force.

What would result if the body temperature is greater than normal? The blood vessels become Ischemic. The blood vessels shrink. The blood vessels will explode. The body loses heat by radiation and conduction.

is a twentieth-century philosophical movement emphasizing the uniqueness of each human existence in freely making its self-defining choices. Existentialism Reallsm Individualism Naturalism

Which organ helps to equalize pressure of the ear drum in frog? Eyes Lungs skin Stomach

How did people respond to the Supreme Court's interpretation of affirmative action in Regents v. Bakke? Demonstrators protested in California. Demonstrators protested in New York. Supporters marched in California. Supporters marched in New York.

"The old man was dead. I removed the bed and examined the corpse. Yes, he was stone, stone dead. I placed my hand upon the heart and held it there many minutes. There was no pulsation. He was stone dead." What is the figurative language used in the line above? Metaphor simile Irony Alliteration

Which of the following statements about reflecting and refracting telescopes is true? A special version of the charge-coupled device found in video cameras is used in optical telescopes. Specialized receivers, similar to those in radios or TV sets, are used in radio telescopes. A series of lenses are used by refracting telescopes to collect visible light. All of the choices

__is a system of thought that focuses on human life and its accomplishments. Rape Galliard Humanism Renaissance

Olfaction and taste rely on chemoreceptors mechanoreceptors pain receptors thermoreceptors

How are the messages of the nervous system conducted? Chemically Electrically Mechanically All of the choices

The ____ gland secretes a sticky alkaline fluid that helps sperm to survive the acidic environment in the urethra and the female vagina. adrenal bulbourethral pituitary thyroid

In which part of the eye are the light impulses changed into electrical signals? Cornea Iris Pupils Retina

Be sure to answer all parts. An AM station broadcasts rock music at 9.30 × 10² on your radio dial. Units for AM frequencies are given in kilohertz (kHz). Find the wavelength of the station's radio waves in meters (m), nanometers (nm), and angstroms (Å). __m __x 10__ nm __x 10 __ Å

Consider the most stable structure of PC14 a) What are the formal charges on P? b) What are the formal charges on Cl? c) What is its molecular geometry? A. Square planar B. Seesaw C. T-shaped D. Tetrahedral E. Trigonal pyramidal

Be sure to answer all parts. An x-ray has a wavelength of 3.97 A. Calculate the energy (in J) of one photon of this radiation. Enter your answer in scientific notation. x 10 J

In the condition called empty sella syndrome, the pituitary gland remains the same enlarges ruptures shrinks

Be sure to answer all parts. Calculate the energy difference (AE) for the transition of n = 2 to n = 4 for 1.00 mol of hydrogen atoms. Enter your answer in scientific notation.

What is the frequency, in Hz, of a photon which has a wavelength of 523 nm? Given: h = 6.626 x 10-34 J.5 c=3.00 x 108 m/s q=mc₂AT a. 3.80 x 10-19 b. 5.74 x 1014 c. 3.47 x 10-31 d. 5.23 x 10-7

Liquid octane (CH, (CH₂) CH,) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). Suppose5.7 g of octane is mixed with 13.0 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 3 significant digits.

Choose the correct answer. Keep your readers interested by avoiding ________ and alternating sentence structure. repetition validity thought-provoking questions elaboration

Check my work Enter your answer in the provided box. Use the Rydberg equation to calculate the wavelength (in Å) of the photon absorbed when a hydrogen atom undergoes a transition from n = 6 to n = 9.

The galliard is a lively dance performed in triple meter a lively dance performed in duple meter. a sacred song that was sung during the Mass on special feast days. a Renaissance instruments used in outdoor performances.