Chemistry Homework Help: Answers & Questions Page 69

• How can I convert percent concentration to molarity?

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• What is the oxidation state of chromium in CrCl3?

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• What does alpha acetal linkage mean?

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• How many molecules are present in 1.0 kg of hydrogen gas?

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• Why are dehydration synthesis reactions important?

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• What is the orbital hybridization in pf5?

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• What is the density of CO gas if 0.196 g occupies a volume of 100 mL?

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• HIll buffer is a solution of 0.4 M K2HPO4, made up in .08M KCl. We need 500 mL for the week. How many grams of K2HPO4 (MW=174.17g) were need to make this volume of buffer? My wkr: 1mole/174.1g x 1L/.4moles = 1L/69.67g 69.67g/1L x.5L = 34.83g Rightorwrong?

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• How do solutes affect the boiling point?

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• What is the chemical formula of baking soda?

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• In SDS-PAGE, the dye front runs off the bottom of the gel. What happens to the gel? The dye front has no relevance to estimating molecular weight,The highest molecular weight proteins run off the gel, the lowest run off, or estimate on diff gel to get mw

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• What is the formula weight of silver chromate ##(Ag_2CrO_4)## in amu?

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• What is the chemical formula for iron(II) hydroxide?

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• 35.0ml of hydrogen gas at STP weighs how many grams?

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• How do you convert 19 inches to feet?

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• Given the reaction: Na2S2O3 + AgBr ----> NaBr + Na3[Ag(S2O3)2] A. How many moles of Na2S2O3 are needed to react completely with 42.7 g of AgBr? B. What is the mass of NaBr that will be produced from 42.7 g of AgBr?

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• What is gravimetric analysis (with examples)?

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• Why is NH3 an Arrhenius base?

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• What is the molar mass of lead (II) chloride (##PbCl_2##)?

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• When a substance can be Amphiprotic explain with examples?

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• How would you make a Bohr diagram for NaCl?

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• What is the bond polarity of CH4?

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• What is the IUPAC name for the compound ##"FeS"##?

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• How do atmospheric pressure and elevation affect boiling point?

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• What are the spectator ions in the reaction between aqueous hydroiodic acid and aqueous lithium hydroxide?

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• What is parallax error in chemistry?

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• Why might a galvanic cell go dead?

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• How can you predict a single replacement reaction?

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• With the assumption that the ammonium ion is formed from the reaction between ammonia and hydrogen io ,describe the formation of bond between these two species and state the type of bond formed?

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• Why honey is more viscous than water??

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• What is the ground-state electron configuration for carbon?

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• How would you draw a six-carbon alkyne that can exist as a diastereomer?

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• Why is partial pressure important?

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• How are oxidation and reduction reactions linked?

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• Is a Lewis dot diagram the same as a Lewis structure?

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• What is the electron geometry of xenon tetrafluoride XeF4?

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• How can I draw the structures of the two enantiomers of cysteine?

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• Assign oxidation numbers to the following compounds, elements or ion a) AI

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• Why is the melting point of Argon so much lower than any of the Period 3 elements?

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• A cell that consists of an Ni, NiSO4(aq) half-cell, an Al, AlCl3(aq) half-cell, and a salt bridge. For Ni2+(aq) + 2e– → Ni at 25C, E = –0.28 V. For Al3+ (aq) + 3e– → Al at 25C, E = –1.66 V.?

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• How many constitutional isomers does C3H8O have?

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• How would you balance the following equation: aluminum iodide and chlorine gas react to form aluminum chloride and iodine gas?

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• Is it possible to rearrange PV=nRT into the form y=mx+b?

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• How can I find chiral centers in ring structures?

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• The titration of an impure sample of KHP found that 36.0 mL 0.100 M NaOH was required to react completely with 0.765 g of sample. What is the percentage of KHP in this sample?

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• What is the structural formula of CaCO3?

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• What does dissociate in water mean and how does it affect acids and bases?

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• Why is the carbon tetrachloride molecule nonpolar and yet the bonds in it are polar?

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• Balancing redox equation? ##K_2CrO_4+Na_2SO_3+HCl->KCl+Na_2SO_4+CrCl_3+H_2O##

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• How do you convert Benzaldehyde to Benzophenone in exactly two steps?

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