Chemistry Homework Help: Answers & Questions Page 71

• Why isn't ##Li_2CO_3## (lithium carbonate) soluble in water?

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• What's the difference between isothermal process, adiabatic process, and isovolumetric process?

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• Draw Lewis structure ,state the molecular geometry and state whether they are polar or nonpolar .. H2CO PCl3 NO2^- .?

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• How do covalent compounds differ from ionic compounds?

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• What units of measurement are used for the combined gas law?

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• How do you convert 45°C to Fahrenheit?

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• What is the difference between aryl and alkyl phenyl?

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• What is ionization; in relation to acids?

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• A 50.0 mL sample of phosphoric acid, H3PO4, is titrated with 42.50 mL of 0.250 M NaOH. What is the molarity of the acid? H3PO4 + 3NaOH = Na3PO4 + 3HOH

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• How do you calculate formal charge from an equation?

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• In racemic mixture, why are both enantiomers of compound present in equal amounts?

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• Is ethylamine a Bronsted-Lowry base?

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• Why is only one hydrogen atom acidic in acetic acid, but all 3 hydrogen atoms in phosphoric acid are ionizable?

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• Check my work please. Give the nuclear symbol for isotopes of silicon for which A=29?

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• Assuming an efficiency of 42.40%, calculate the actual yield of magnesium nitrate formed from 113.8 g of magnesium and excess copper(II) nitrate. How do I solve?

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• The acidic form of bromothymol blue (pKa = 7.0) is yellow, and its basic form is blue. What colours will this indicator be at pH = 5, 7 and 10 respectively? a)yellow, green and blue b blue, green and yellow c blue, blue and blue d yellow, yellow and blue

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• What happens when you mix baking soda and vinegar? Would it be a chemical or physical reaction? A) it flows out of the top, it is physical B) it does not show any difference, physical C) the mixture flows out, chemical D) none of the above Do great!

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• What is neutralization reaction?

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• What does pH measure?

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• How do you find the de Broglie wavelength of an electron?

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• What does the "15w40" stand for?

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• What are the oxidation numbers of the elements in the nitrite ion?

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• What does lead(ii) oxide mean?

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• How do you calculate the formal charge of O3?

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• What is the acronym for the electromagnetic spectrum and how can I remember it?

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• Your blood has a density of 1.05 g/mL. How many grams of blood would you lose if you donated 1.00 pint?

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• What is Proust's law of constant composition?

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• What is the difference between a condensed structural formula and a structural formula?

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• What is the hybridization of the central iodine atom in I3−?

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• What metalloids are in the periodic table?

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• "Absolute Zero" is what temperature on the Celsius and Fahrenheit scales respectively?

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• What is the shape of SF4 (including bond angles)?

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• Pepsi puts 355 ml of pop in a can. How many drops is this?

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• If 22.3 grams of solid lead(II) oxide reacts with 34.06 grams of ammonia gas (trihydrogen nitride), the resulting products are lead metal, nitrogen gas, and water vapor. How many grams of lead metal are produced?

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• What are molecular compound properties?

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• How does the shielding effect affect atomic radius?

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• Find the mass in grams of one molecule of NO2 ; you must express your answer in grams?...

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• How can I write the formula for potassium bromide?

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• What are atomic size trends within transition metals?

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• The molecular formula for glucose is C6H12O6. What would the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions be?

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• What the mass percent of aluminum in ##Al(OH)_3##?

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• What is the meaning of Anhydrous, Hydrous, and Undissociated?

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• Is addition of sodium in to water is a chemical change?

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• A close box made of wood 1cm thick has ecteenal dimensions 20cm by 15cm by10 cm.find the mass of the empty box.if one cubid decimeter of wood weight 1kg?

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• How many grams of lead chromate are formed from the reaction of 15.0mL of 0.40M potassium chromate with 15mL of lead nitrate? What was the limitng reagent from the equation?

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• What is the balanced ionic equation for the reaction of IO3-(aq) with I- in the acidic solution, H+ ?

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• What type of mixture can be separated by sublimation ?

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• Why does and electron have negative charge and proton have positive while neutron neutral?

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• A volume of saline solution weighed 25.6 g at 4 degrees C. An equal volume of water at the same temperature weighed 24.5 g. what is the density of the saline solution?

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• Define solubility and write a note on its relation with temperature ?

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