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The reaction 2A→B+C has a Kc of 0.2. The reaction is commenced with initial con- centrations [A] = 0.2 M, [B] = 0.2 M and [C] = 0.2 M. In what direction does the reaction occur?
How would you handle the response, and how would you determine the proper type of PPE to be used in this incident? What type of PPE would you recommend?
Calculate the molarity of acetic acid in a vinegar sample, knowing that 5.00 mL of vinegar requires 43.50 mL of 0.105 M NaOH to just reach the phenolphthalein endpoint in a titration.
Explain why platinum's potential decreased with time and explain why the steady-state value was -0.413V vs SHE.
Write an equation for the reaction that takes place between hydrobromic acid, HBr, and ethylamine, C2H5NH2, when aqueous solutions of the two are mixed.
Determine the mass of aluminum acetate that can be made if 125 grams of acetic acid and 275 grams of aluminum hydroxide, what is the reagent in the problem?
How many molecules of carbon dioxide are produced when 145 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
The solubility of NH3 in water at an NH3 pressure of 320 mmHg is 22.8 g/100 mL. What is the solubility of NH3 if the partial pressure is increased to 975 mmHg?
You know that a number 8 less than 60 is the number 52. So, you could rewrite your answer from the previous part as, "What number can you multiply by 4 to get 52?" This is just the definition of 52
How many milliliters of a .250 M sulfuric acid solution would be required to completely react with 2.398 grams of solid aluminum hydroxide?
A 0.1276 g sample of an unknown monoprotic acid was dissolved in 25.0 mL of water and titrated with 0.0633 M NaOH solution. The volume of base required to bring the solution to the equivalence poin
A certain weak acid, HA, has a Ka value of 5.8×10-7. Calculate the percent dissociation of HA in a 0.10 M solution.
calcium hydroxide (aq) + hydrochloric acid (aq) calcium chloride (aq) + water (l). What is the maximum amount of calcium chloride that can be formed?
During a tritration, 34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What was the concentration of the original sulfuric acid solution?
The volume of a sample of Cl2 is 5.62 L at 740 torr and 33 degrees celsius. What volume will the Cl2 occupy at 107 degrees celsius and 680 torr.
The percent by mass of bicarbonate in a certain alka seltzer product is 32.5%. calculate the volume of c02 generated at 37C and i atm when a person ingest 3.29 g tablet.
How many liters of gas would be formed at 510 degrees C and 1.00 atm pressure by explosion of 405g of NH4NO3 ? Given the formula: 2NH4NO3(s)--> 2N2(g) + 4H20(g) + O2(g)
The concentration of Mg2+ in a sample of water is 262 mmol/L At what pH will 99% of the Mg2+ be precipitated as Mg(OH)2? Ksp = 8.9 x 10-12
How many grams of barium ion are in a 487-mg sample of the barium compound if a solution of the sample gave 499 mg BaSO4 precipitate? What is the mass percentage of barium in the compound?
How many grams of CH4 must be burned to release 490 kJ of heat based on this thermochemical equation:CH4 + 2 O2 --> CO2 + 2 H2O Delta H rxn = -802.3 kJ.
If 69.5 kJ of heat is applied to a 1040. g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
How many molecules of carbon dioxide are produced when 134 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
An 85.0g sample of iron requires 954 J of heat to raise its temperature 25.0C. What is the specific heat of the iron?
Calculate the theoretical mass of Ca^2+ ion in one tablet in grams if there is 750 mg CaCO3 and 320mg Calcium per tablet. The tablet weight 1.801 grams.
A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the gold oxide?