Chemistry Homework Help: Answers & Questions Page 89

• How many valence electrons are in boron?

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• How do valence electrons affect reactivity?

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• What are physical properties of liquids?

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• Which stereoisomer of 3-hexene forms a meso compound when it reacts with ##Br_2## ?

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• What is a peptide bond?

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• 8.0x10^-8 m to nm ?

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• What causes nuclear fission?

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• How do the Fahrenheit and Celsius temperature scales compare?

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• Name these compounds (a) N2O3 (b) Fe(HCO3)2 (c) Cu2SO4 (d) Ca3(PO4)2 ??

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• The atomic number for the element calcium (Ca) is 20. How many protons and electrons does each atom have?

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• What are conjugate acid-base pairs?

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• How do intermolecular forces affect capillary action?

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• How do you balance equations with hydrates?

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• How do you convert 1000 g to kg?

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• Is the nucleus of an atom neutral, positively or negatively charged?

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• What is the electron configuration for Fe+?

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• What is the bond line notation for pentane?

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• Should I take into account the water of a hydrate when calculating the molar mass in order to find the limiting reactant of the equation ? 2 CuSO4(dot)5H20 + 2 Na2CO3 ---> CuCO3Cu(OH)2 + 2 Na2SO4 + CO2 +4 H20

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• What are examples of gases dissolved in liquids?

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• According to the Pauli exclusion principle, when can two electrons occupy the same orbital?

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• How are hydrogen bonds related to cohesion?

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• How does intensity affect the photoelectric effect?

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• How can I make back titration calculations?

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• What does accuracy in chemistry mean?

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• Why was bretylium tosylate discontinued?

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• What are the significant figures rules?

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• Why are IUPAC names necessary?

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• What is the lewis dot structure of aluminum sulphate?

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• A mass of mercury occupies 0.95 L. What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g/mL and the density of ethanol is .789 g/mL?

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• Use standard enthalpies of formation to calculate ΔH∘rxn for the following reaction:? CaO(s)+CO2(g)→CaCO3(s)

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• Why is enthalpy a state function?

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• Which of the following compounds will undergo an Sn2 reaction most readily: ## (CH_3)_3C CH_2I## or ##(CH_3)_2CHI##?

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• Which has a bigger volume solid, liquid or gas?

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• Rum is often sold by the fifth (0.200 gallon). Convert this volume into units of cubic meters

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• How do you determine the formula for calcium chloride?

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• What is a pKa table?

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• What is a meniscus? Why is it necessary to know about it when measuring liquids?

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• How do you name alkynes with two triple bonds?

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• Why does the phase diagram of water have a negative slope?

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• Is hydrogen fluoride a polar covalent molecule?

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• How do you do gas stoichiometry problems at STP?

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• Why is fluorine a gas, bromine a liquid, and iodine a solid, at room temperature?

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• Ashok wanted his house white washed. He bought 10kg quick lime from market and dissolved it in 30 liters of water. On adding lime to water he noticed that bubbles were produced and the solution becomes hot. What was the product formed and why?

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• What is the definition of electronegativity?

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• How do you define the octet rule?

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• How do you convert percentages to masses? Cheers _xD83D__xDE0A_

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• What functional groups are present in acetaminophen?

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• What is the electron configuration for an oxygen atom in an excited state? thank you :)

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• The normal boiling point of water is 100.0 °C and its molar enthalpy of vaporization is 40.67 kJ/mol. What is the change in entropy in the system in J/K when 39.3 grams of steam at 1 atm condenses to a liquid at the normal boiling point?

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• Why is there only 3 constitutional isomers of pentane (C5H12)?

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