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You need to dissolve CaCl2 in water to make a mixture that is 38.0% calcium chloride by mass. If the total mass of the mixture is 681.2 g, what masses of CaCl2 and water should be used?
Explain 3-A 0.421 g sample of aspirin prepared in the laboratory is dissolved in 95% ethanol, diluted with water, and titrated to a phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH. What is the percent purity of aspirin in the sample?
Write a chemical reaction demonstrating that SO2 is an acidic oxide. c) Write balanced chemical reactions demonstrating that Al2O3 is amphoteric.
you have a hydrochloric acidsolution with a pH of 1.8. How many mL of sodium hydroxide with a pH of 11.8 would be used to neutralize 20.0 mL of the acid solution.
when 0.050 mol of propionic acid c2h5co2h is dissolved in 300 ml of water the equilibrium concentration of h3o ions is
what are the general requirements must be met before two compounds could be isomers?
an object made of aluminum has a mass of 8.37g. when it was placed in a graduated cylinder containing 20.0ml of water
If you had excess chlorine, how many moles of aluminum chloride could be produced from 15.0g of aluminum
Determine the equivalent acid-base equilibrium that results when each of the following pairs of solutions is mixed. 25.0 mL of 0.50 M NaOH + 12.0 mL of 1.50 M HCl Pick two initial conditions from first four choices. Pick one choice from remaining ..
what is the molarity of a solution that contains 36.0g of vitamin b1 hydrochloride molar mass 337gmol in 190ml of
determine the amount of food you must consume to reach an ld50 exposure when the concentration of red dye 40 in the
Sodium azide (NaN3) is the chemical used in air bags. Sensors detect the initial crash and electrically initiate the explosion of a small charge of this compound
What is the pH of the solution during the titration when the following volumes of the NaOH have been added to 34.5-mL of the acid.
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