Answers created by Stefan V.
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Is there some appropriate action when you notice that someone has "updated" an answer by completely replacing it?
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What is the value of Kc of the overall reaction after combining the two individual reactions?
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A chemist dissolves 0.01 mol of an acid (HCl) in enough water to make a 350 mL solution of acid. What is the pH of the acid solution?
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What is the weight/weight % of 9.74g of sodium sulfate to a final volume of 165 mL of solution?
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What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ?
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Can someone help me with this question?
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The concentration of urea in a solution prepared by dissolving 16 g of urea in 39 g of is __________% by mass. The molar mass of urea is 60.0 g/mol??
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What is the equilibrium constant, #K_c#, for the reaction at this temperature?
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What mass of NaCl is needed to make 2.50 L of a 2.20 M of a NaCl Solution?
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Is there any way to get the U+225F ≟ questioned equals sign in math formatting?
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Questions are getting changed? [Recent changes]
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Why are accounts being deleted? [Recent changes]
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Is there a way to change my "handle" or username? I know I can change my display name, but how would I change my handle?
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How many grams of #"KNO"_3# should be dissolved in water to make #"500.0 g"# of a #"20.0-ppm"# solution?
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When 2 moles of #H_2(g)# and 1 mole of #O_2(g)# react to give liquid water, 572 kJ of heat evolve.
#2H_2(g)# + #O_2(g)# #rarr# #2H_2O(l)# ; #DeltaH# = -572 kJ
a) What is the themochemical eq. for 1 mole of liquid water?
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The density of a Gas is 1.43 g/mol at STP. What is the gas?
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A gas with a volume of 4.0 L at 90.0 kPa expands until the pressure drops to 20.0 kPa. What is its new volume if the temperature doesn't change?
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Is there a possibility that you might lose badges in Socratic? Thanks.
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Why can't I edit a question after it has been answered?
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What is the molality of a #"H"_2"SO"_4# solution which is #"96% w/w"# ? #M_M = "98 g/mol"#
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An equilibrium mixture of #"28 g"# #"H"_2# and #"140 g"# #"Br"_2# is heated in a #"4.01-L"# vessel at #"1400 K"#. At equilibrium, the vessel is found to contain #"1.1 g"# of #"HBr"#. Calculate #K_c# ?
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What is the value of #K_(sp)# for tin(II) sulfide given that its solubility is
#5.39 * 10^(−12)# #"g/100 g H"_2"O"# ?
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How many moles of each element are present in 1.000L of a 0.295 M solution of sodium chloride?
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What is the #K_(sp)# for silver chloride?
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Question #337cb
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Sucrose is a nonvolatile, nonionizing solute in water. Determine the vapor pressure at #25^@"C"# of the #"1.5-m"# sucrose solution. Assume that the solution behaves ideally. The vapor pressure of pure water at #25^"C"# is #"23.8 torr"# ?
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Calculate the concentration in #"g dm"^-3# of chloride ions in a #"0.25-M"# potassium chloride solution?
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Determine the total pressure of a gas mixture that contains oxygen, nitrogen, and helium if the partial pressures of the gases are as follows: #"P"_ ("O"_ 2) = "20.0 kPa"#, #P_ ("N"_ 2) = "46.7 kPa"#, and #P_ "He" = "26.7 kPa"# ?
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Does a precipitate form when a solution of sodium acetate and a solution of ammonium sulfate are mixed together?
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A 0.211 mol sample of an unknown gas contained in a 5.00 L flask is found to have a density of 2.50 g/L. The molecular weight of the unknown gas is
g/mol.?
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How many grams of Iron(II) sulfide will dissolve per liter in a #"0.20-M"# sodium sulfide solution?
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What is the %m/m of 75.0 g of ethanol dissolved in 500.0 g of water?
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How do I calculate molality to percent by mass?
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What concentration of #"SO"_3^(2–)# is in equilibrium with #"Ag"_2"SO"_3(s)# and #1.80 * 10^-3# #"M"# #"Ag"^(+)# ? The #K_(sp)# of #"Ag"_2"SO"_3# is #1.50 * 10^–14#
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Is there a way to display an image in a comment?
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Calculate the #"pH"# of a solution that resulted when #"40 mL"# of a #"0.1-M"# ammonia solution was diluted to #"60 mL"# ?
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Is there any way to sort questions by date?
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How can I find the people who's using #Socratic# from same country with me?
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Question #8d3d7
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Active days goes down?
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Question #f372d
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How to Calculate the pH of 0.180 g of potassium biphthalate (pKa = 5.4) in 50.0 mL of water?
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Question #e0529
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Question #3c081
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Question #a4835
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Question #38939
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What is the #K_a# for a #"1.0-mol L"^(-1)# #"NH"_4^(+)# solution with a #"pH"# of #4.64# ?
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Question #682b7
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Question #1cb83
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Calculate molality of a #"1-L"# solution of #93%# #"H"_2"SO"_4# mass by volume. The density of the solution is #"1.84 g/mL"# ?
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Question #31ba5
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Question #cf085
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How many grams are in 0.02 moles of beryllium iodide, #"Bel"_2# ?
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How do you solve this stoichiometry question?
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What is the concentration of the solution produced when 150.0 mL of water is added to 200.0 mL of 0.250 M NaCl?
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What is the molarity of the solution produced when #"350.0 mL"# of water and #"75.0 mL"# of #"0.125 M"# #"NaNO"_3# are mixed an boiled down to #"325.0 mL"# ?
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Calculate the equilibrium concentration of #"NO"# if the equilibrium concentration of #"N"_2# is #"0.036mol L"^(-1)# and that of #"O"_2# is #"0.0089 mol L"^(-1)# ?
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Question #01e41
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Why does it say "Someone thanked you"?
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You have a #"500-mL"# #"HCl"# solution having #"pH" = 3#. Determine the amount of #"NaOH"# solid #("M"_M = "40 g/mol")# that must be added so that the #"pH"# of the solution is changed to #10# ?
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What is the balanced net ionic equation for sodium hydroxide and acetylsalicylic acid?
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Question #ed2aa
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Question #8818a
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A cube of gold is heated then submerged in water. What is the volume of the cube of gold (in mL)?
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Question #461b0
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Question #fe328
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How to determine the pH of the following mixture and the amount of salt formed?
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Please help me figure out the steps to solving this problem?
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When 14.0 g of calcium metal is reacted with water, 5.00 g of calcium hydroxide is produced. Using the following balanced equation, calculate the percent yield for the reaction?
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A solution is a mixture of #"0.05M NaCl"# and #"0.05M NaI"#.The concentration of iodide ion in the solution when #"AgCl"# just starts precipitating is equal to?
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In my profile, how do I get to a page that shows all my Notifications at once, if possible ? So far, I've found the drop down menu for this, but this doesn't allow for prolonged viewing of these, or working with them as a whole. Thanks !!
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If you start with ten grams of sodium hydroxide, how many moles of sodium chloride will be produced?
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If you start with #7.0# moles of propane and #7.0# moles of oxygen gas what is the percent yield if #4.0# moles of carbon dioxide are produced?
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Question #93106
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Find the mass of urea, #"CO"("NH"_2)_2#, needed to prepare #"49.0 g"# of a solution in water in which the mole fraction of urea is #7.58 * 10^(−2)#?
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How many moles of nickel are in #5.12 * 10^25# atoms of nickel?
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Can we have a common @mention tag for heroes rather than individual???
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Question #becd4
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How many electrons can fill the energy shell described by the principal quantum number #n=4# ?
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Question #bb890
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Question #1292d
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Question #74a4c
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Question #a7fdc
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How can you restore your answer?
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What determines the colour of my daily streak?
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Question #956b2
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Question #930df
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Is there any way to find answers I liked (clicked the heart button on)?
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Does my name go in top streaks if my streak is really high?
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How can you correct wrong answers from other users?
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Question #cd3c6
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What is the volume of solution with 0.82g/L concentration when the mass of the solute is 7g?
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Question #0d46c
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Question #46977
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Question #f7e76
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If it took Jane 3/4 hour by long will it take to paint a wall that was 12 ft by 12 ft, how long will it take to paint another wall that is 15 ft by 16 ft?
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Question #7f814
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What is the pH of 0.001 M NaOH(aq) at 298 K?
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Question #8d45c
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