Chemistry Homework Help: Answers & Questions Page 80

• What is the overall charge of the electron cloud of an atom? Why?

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• What are some examples of properties of solids?

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• How do isotopes of carbon differ from one another?

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• What are saturated, unsaturated and supersaturated solutions?

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• What type of mixtures can be separated by filtration?

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• the spectroscopic notation (also called spdf notation) electron configuration of Ni?

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• Why doesn't helium have a third ionization energy?

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• 5 grams of Methane (CH3OH) react with 10 grams of oxygen (O2), how many grams of carbon dioxide (CO2)will be formed?

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• How can I difference between substitution and elimination reactions?

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• How do you calculate the total number of protons and electrons in a polyatomic Ion. Do you have to memorize it?

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• Density HCl 1.19 g/cm^3 Mass Percent of Solute 38 what is the molarity, molality, and mole fraction?

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• Why is the pH of stomach acid necessary?

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• What is the dipole moment for azulene?

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• What is the chemical reaction for the formation of diaquabis(ethylenediamine) copper(II) iodide from ethylenediamine, potassium iodide and water?

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• How do you determine highest van't Hoff factors?

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• What is the acid ionization equation for H2SO4 (including removing the acidic hydrogen H+)?

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• How do the names of ionic compounds differ from covalent compounds?

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• A chef fills a 50 mL container with 43.5 g of cooking oil. What is the density of oil?

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• If the atomic weight of nitrogen is 14.0, what is the mass of one mole of nitrogen gas ##N_2##?

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• How do metalloids differ from metals?

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• A Big Mac hamburger from McDonald’s contains 540 Calories. (a) How many kilojoules does a Big Mac contain? (b) For how many hours could the amount of energy in a Big Mac light a 100 watt light- bulb? (1 watt = 1 J/s)

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• Why is an exothermic reaction spontaneous?

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• What is the formula for iron (III) oxide?

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• In H2SO4 how to determine the charge of H2 and SO4?

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• What aromatic compounds follow Hückel's rule?

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• Complete the following 504J = _________ cal = _______ KJ 192 cal = ________ J = ________ KJ 0.423 KJ =_______ J = ________ cal ?

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• What is the name of ##Al(OH)_3##?

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• Barium chloride and sodium sulfate form sodium chloride and barium sulfate

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• How do you balance redox reactions in basic solution?

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• Why are primary carbocations less stable than secondary and tertiary ones?

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• After adding water to convert Mg3N2 to magnesium oxide, the student did not heat the crucible for long enough, and failed to convert all the Mg3N2 to magnesium oxide?

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• How does electromagnetic spectrum relate to photosynthesis?

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• Write and balance the following synthesis chemical equation; nitrogen gas react with hydrogen gas creating ammonia [ NH3]. a. Determine the number of liters of ammonia gas that can be produced at a temperature of 27 degrees Celsius and a pressure of760 ?

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• What are the units of specific heat?

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• When atoms of the same element have different mass numbers, what are they known as?

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• Why do energy levels converge at a continuum and what is a continuum?

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• Why reaction between covalent compounds are usually slow?

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• Which element is undergoing reduction in the following reaction: Zn(s) + 2 AgNO3(aq) → Zn(NO3)2(aq) + 2 Ag(s)?

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• Which element is the most electronegative among C, N, O, Br, and S?

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• What are tarry oxidation products?

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• How do you calculate experimental mole ratio?

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• How many significant figures are there in the measurement 0.003 kg?

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• What element has the noble-gas notation [Ne]3s23p5?

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• How do you calculate the formal charge of NO3-?

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• Explain Isomerism and define its types?

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• What is the metric unit for measuring mass?

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• What would the formula be for titanium iv oxygen? Would it be TiO2?

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• The element calcium has the atomic number of 20 and the mass number of 40, how many neutrons does it have?

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• How many grams of solid BaSO4 will form when Na2SO4 reacts with 25 mL of 0.50 M Ba(NO3)2? __ Ba(NO3)2 + __ Na2SO4 _x0001_ __ BaSO4 + __ NaNO3

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• How do you determine the formula and molar mass of silver cyanide?

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