Homework Answers Page 10642

• At what temperature is the concentration of a saturated solution of ##KCl## (molar mass 74.5 g) approximately 3 molal?

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  Chemistry

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• How do you find the six trigonometric functions of 315 degrees?

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  Geometry

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• What is the quotient of 3/4 divided by 2/3?

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  Algebra

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• How can physics help engineers?

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  Physics

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• How many pi bonds are formed when sp2 hybridization occurs in ethene, C2H4?

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  Chemistry

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• Is ##1/3## a rational, irrational number, natural, whole or integer?

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  Algebra

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• How do you find vertical, horizontal and oblique asymptotes for ##(-2x^2-6x+3)/(3x+9)##?

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  Precalculus

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• How many earths can fit the diameter of the sun?

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  Science

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• What is the purpose of a capacitor?

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  Physics

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• How does the law of conservation of energy apply to calorimetry?

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  Chemistry

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• You find 7g of Nitrogen in 0.50 dm^3. Whats the mass?

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  Chemistry

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• What are some examples of Ion-dipole forces?

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  Chemistry

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• Why are standardized units of measurement important?

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  Physics

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• What was one effect of Copernicus' theory of a sun-centered solar system?

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  Science

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• What is variation? Why do species vary? Why do individuals within a species vary?

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  Environmental Science

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• Where did the Iroquois tribe live?

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  History

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• What does "eu" mean? As in EUlogy, EUphony, EUgenics?

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  English

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• How do polar covalent bonds dissolve in water?

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  Chemistry

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• How do you find the coterminal angle for ##(11pi) / 4##?

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  Geometry

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• How do you find the greatest common factor of ##140n, 140m^2, 80m^2##?

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  Algebra

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• What are the factors of 108?

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  Algebra

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• Do all cells in the human body undergo mitosis? why?

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  Biology

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• Imagine that you are flying from Boston to San Francisco. You leave Boston at 8:00 A.M. What time is it in San Francisco?

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  Science

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• What did the earth's surface look like during the Jurassic Period?

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  Science

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• What is the Lewis electron-dot diagram for a fluoride ion?

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  Chemistry

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• What is the domain and range of ##y = 3x - 5##?

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  Algebra

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• What is the isotope notation for chlorine?

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  Chemistry

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• How do you find the region inside cardioid ##r=1+cos(theta)## and outside the circle ##r=3cos(theta)##?

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  Calculus

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• How do you prove ##(tany+coty)/cscy=secy##?

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  Geometry

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• Can you compare the location of bonding electrons in a polar covalent bond with those in a nonpolar covalent bond?

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  Chemistry

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• How do you prove ##(1 + tan^2x)/(1-tan^2x) = 1/(cos^2x - sin^2x)##?

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  Geometry

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• How can the distance formula be used in real life?

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  Algebra

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• Of the dorsal, ventral, cranial, vertebral, thoracic, abdominal-pelvic, abdominal, or pelvic cavities, which is the most protective body cavity?

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  Psychology

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• How was Coulomb's law equation created?

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  Physics

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• How do you solve compound inequalities ##4x<16## or ##12x>144##?

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  Algebra

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• Convert 255 mmHg into atm. And convert 620 torr into psi

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  Chemistry

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• How does the pancreas help maintain homeostasis?

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  Psychology

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• What is malapropism? Is there a movie that has some sort of malapropism in it?

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  English

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• Why does the nucleus of an atom have a positive charge?

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  Physics

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• What is the difference between daughter cells produced by meiosis and daughter cells produced by mitosis?

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  Biology

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• What is the difference between ingestion, digestion, absorption, and elimination?

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  Biology

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• Explain genetic drift?

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  Biology

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• What does mutually exclusive mean?

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  Algebra

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• Heating potassium chlorate produces potassium chloride and oxygen gas. The balanced equation for this decomposition reaction is below. Calculate how many moles of oxygen gas are formed from 6.32 grams of potassium chlorate? 2 KClO3 = 2KCl + 3 O2

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  Chemistry

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• How do you simplify: square root of 32 - square root of 18?

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  Algebra

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• What material is Mars made out of?

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  Science

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• Solutions of barium nitrate and sodium sulfate are mixed, and a precipitate of barium sulfate is formed. Why is barium sulfate the only compound that precipitates when the solutions are mixed?

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  Chemistry

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• How do you simplify ##40 + 40 * 0 + 1##?

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  Algebra

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• What is the duct that connects to the duodenum?

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  Psychology

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• Can you write the equation for the oxidation and reduction half-reactions for the redox reactions below, and then balance the reaction equations? a. MnO2 + HCl --> MnCl2 + Cl2 + H2O b. S + HNO3 ---> SO3 + H2O + NO2

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  Chemistry

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