Homework Answers Page 10669

• What is the perimeter of a parallelogram with sides ##11/12## and ##4/9##?

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  Geometry

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• Why are antigens bad or harmful? Why are they helpful or important?

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  Psychology

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• What is the LCM of ##31z^3##, ##93z^2##?

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  Algebra

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• Why does the double bond in alkenes make them more reactive than alkanes, which are single-bonded?

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  Chemistry

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• How do you calculate kinetic energy in simple harmonic motion-pendulums?

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  Physics

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• How many 325 mg ibuprofen tablets can be produced from 2.50 kg of ibuprofen?

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  Physics

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• 1/2 yard is how many feet?

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  Algebra

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• Why is classification important in biology?

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  Biology

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• How can I determine if and when a molecule has or needs a resonance structure?

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  Chemistry

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• Why do cells generally have to be small in size? What will the cell do in response to an increase in size?

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  Biology

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• How do you multiply radical 2 times radical 2?

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  Algebra

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• In raising a 5000N piano with a pulley system, the movers note that for every 2m of rope pulled down, the piano rises 0.2m. What is the effort force required to lift the piano?

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  Physics

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• Do epinephrine and norepinephrine exist in the body as a racemic mixture? How does the chirality of the compound affect the receptors? Do s-norepinephrine and r-norepinephrine function the same in the human body?

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  Chemistry

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• What does the atomic number tell us?

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  Chemistry

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• What is the chemical formula of tin(IV) oxide?

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  Chemistry

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• How do you calculate molar solubility and ksp?

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  Chemistry

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• How do you graph the secant, cosecant, and cotangent functions?

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  Geometry

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• What is telophase ii?

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  Biology

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• A beaker containing water is placed on a spring scale and reading is W. Now a stone of weight D is hung by means of massless string and lowered in water without touching the bottom of beaker. What is the new reading on spring?

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  Physics

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• How do you graph ##y=sqrt(x-3)##?

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  Algebra

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• Predict the relative atomic radii of the three magnesium isotopes, giving your reasons?

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  Chemistry

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• What is the mode for the sample 3, 2, 5, 7, 3, 2, 6, 4, 3, 7, 2, 4, 3, 5, 7, 5, 1, 2, 5, 3,7 ?

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  Statistics

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• How are strong nuclear force and weak nuclear force alike?

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  Science

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• How does human population growth affect the extinction of other species?

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  Biology

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• What is the difference between point-slope form and slope intercept form?

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  Algebra

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• What is the sum of all the oxidation numbers in any compound?

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  Chemistry

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• State the difference between a physical change and a chemical change, and list three indications that a chemical change has occurred. Which indication is most suggestive of a chemical reaction?

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  Chemistry

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• Is BBr3 a lewis acid or base?

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  Chemistry

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• How do you solve ## ln (x – 2) + ln (x + 2) = ln 5##?

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  Precalculus

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• How do you prove: ##secx - cosx = sinx tanx##?

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  Geometry

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• How do you calculate the vapor pressure of ethanol?

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  Chemistry

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• Does SO2 have a resonance structure?

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  Chemistry

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• How to factor ##4x^4+81##?

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  Algebra

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• What are the six functions of bone, and what is hemopoiesis?

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  Psychology

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• How would you define second ionization energy?

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  Chemistry

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• What is the chemical formula for sugar?

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  Chemistry

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• What is the empirical formula of C2H4O2?

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  Chemistry

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• How can I find the percent compositions of Mg(NO3)2?

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  Chemistry

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• Calculate the %Br in a 1.0234g mixture of AgCl and AgBr if the mixture contains 0.6635g of Ag?

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  Chemistry

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• When iron(II) sulfate dissolves in water, does iron(II) form a complex ion with water surrounding it?

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  Chemistry

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• When is Lac operon turned on and When is it turned off?

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  Biology

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• How do you find the related acute angle?

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  Geometry

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• Do plant cells contain mitochondria?

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  Biology

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• Which of these is not an example of an isotonic muscle contraction: tying your shoe, lifting a glass of water to your mouth, pushing against a wall, or writing a letter?

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  Psychology

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• What is a constellation is and what determines when it is visible to us?

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  Science

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• The ordered pair (1.5, 6) is a solution of direct variation, how do you write the equation of direct variation? Represents inverse variation. Represents direct variation. Represents neither.?

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  Algebra

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• How does salt change the specific heat capacity of water?

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  Chemistry

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• How do you convert 849 yards to mile?

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  Algebra

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• Hybridization of carbon in ##C_2H_2##?

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  Chemistry

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• What are the two main types of chemical bonds?

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  Chemistry

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