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If 414 mL of a gas measured at 26°C and 641 torr has a mass of 0.384 g, what are the molecular mass and molar mass?
The flask was then shaken until the solution was uniform. A 30.0-mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
Concentrated stock HCl has a molecular weight of 36.46 and contains 32g of salt for every 100g of acid (termed as 32% w/w). To prepare molar solutions %w/w must be converted into %w/v by considering
An oxygen tank kept at 20.0?C contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 20.7 atm. How much oxygen was used during the two-week period?
The Michaelson-Menten mechanism for enzyme catalyzed reactions. Use this equation to discuss how subcellular localization of biochemical function is acheived.
When 157 mg. of dipentylamine was added to 122 mg. of benzoic acid and 2 mL of water, a completely homogenous solution was formed. Draw the structure of the species present int the water.
What's the total pressure generated by a mixture of gases if the pressure of oxygen is 465 mm Hg, the pressure of nitrogen is 1.1atm and the pressure of chlorine is 501 torr? Report your answer in t
Draw the structure of a hydrocarbon that reacts w/ 2 equivalent of H2 (H sub 2) on catalytic hydrogenation and gives only succinic acidon reactions with acidic KMnO4 (KMnO sub 4).
Gas tank holds 42kg of gasoline. When gasoline burns, 147kg og oxygen are consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is prod
The assembly expands from an initial volume of 0.80 L to a final volume of 5.88 L against an external pressure of 1.0 rm atm.Calculate w.
a balloon filled with helium gas has a volume of 762 mL at a pressure of 1atm. The balloon is released and reaches altitude of 6.5km, where the pressure is 0.5atm. Assuming that the temperature has
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?