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A pharmacist resolute that 14.5 g of NaOH are necessary for a particular reaction. The source of the NaOH is a 2.80 M solution. Explain how many mL of the solution will the pharmacist need?
A. 129 mL B. 102 mL C. 7.72 mL D. 5.18 mL
what percentage of HSO4- is dissociated in 2M solution? Why does molarity approximate molality at low concentrations?
If ethyl benzoate is treated with phenyl magnesium bromide (1:1) ratio, a one to one mixture of ethyl benzoate and triphenylmethanol are obtained after work-up instead of just benzophenone which might be expected.
What is the pressure of a 10g sample of sulfur trioxide in atmospheres at a temperature of 20 degrees Celsius that has a volume of 50L
K a for aspirin (acetylsalicyclic acid) is 3.0 x 10 -4 at 25°C. What is the the acetylsalicylate anion, the conjugate base of aspirin?
The half-life for a first-order reaction is known to be 379 seconds at a given temperature. What is the rate constant at this temperature?
A) N-20 is radioactive. Which mode of decay would be expected for this nucleus? B) Y-96 is radioactive. Which mode of decay would be expected for this nucleus
Use the thermodynamic data in Appendix B to calculate the standard cell potential and the equilibrium constant at 25°C for the cell reaction in a direct methanol fuel cell
The elemental mass percent composition of malonic acid is 34.63% , 3.87% , and 61.50% . Determine the empirical formula of malonic acid. Express your answer as a chemical formula.
A standard solution was made when 1.132g of pure copper wire (MM= 63.546g/mol) was weighed, dissolved in concentrated HNO3, and diluted to 100 mL. What is the concentration of the stock solution
Consider 4.40L of a gas at 365mmHg and 20degrees C . If the container is compressed to 2.60L and the temperature is increased to 30 degrees C , what is the new pressure, P2, inside the container? Assume no change in the amount of gas inside the cy..
A 4.05 g sample of a compound containing only C, H, and O was burned completely. The only combustion products were 10.942 g CO2 and 4.476 g H2O. What is the empirical formula of the compound.
What is the total alkalinity of water in mg/L as CaCO3. Determine the species and the quantity of each of the species if the pH 8.3 equivalent point is reached after adding 15mL of acid.
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