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Explain what volume of water (in mL) must be added to 450.0mL of 0.2074 M acid to make the concentration exactly 0.2000 M?
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 424 K, Kc = 0.080 for the following equilibrium:
For the average person, a LDL chlesterol value is less than 200mg/dL. (200mg of LDL cholesterol per dL of blood) What is this value in g/mL
A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?
Include drawings of each of the three ph cases for phenylalanine, and be certain to include the appropriate locations of charge on your molecular structure.
A student dissolved 0.1319g of an unknown diprotic acid in 100mL of distilled water. The acid was then titrated with 0.1005M NaOH solution. The second equivalence point showed the sharpest change in pH, and so it was used to determine the molecula..
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
Write a balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NH3 to form Zn(NH3)4 2+
Identify the reactant acting as an acid and the reactant acting as a base. Indicate whether the acid is Bronsted Lowry acid, Lewis acid or both.
The analysis of oil from a reciprocation aircraft engine showed a copper content of 8.53 μg Cu/mL. Calculate the 90% and 99% confidence intervals of the results if it was based on (a) a single analysis, (b) the mean of four analyses, (c) the mean ..
what volume of .2500M colbaat(III)sulfate is required to react completely with 5.00 grams of sodium carbonate?
A 25.0-mL sample of 1.00 M NH3 is titrated with 0.10 M HCl. What is the pH of the NH3 before the titration begins? Kb = 1.8 × 10-5
Cinnamon gets some of its flavor from cinnamaldehyde that is 81.79% C; 6.10% H and the rest is oxygen. Determine the empirical formula for this compound (enter your answer in the form CxHyOz)
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