Questions
Calculate the equilibrium concentration of carbonate in a 0.067 M solution of carbonic acid. Do not...

Calculate the equilibrium concentration of carbonate in a 0.067 M solution of carbonic acid. Do not enter units as part of your answer. Use “E” for scientific notation.


Ascorbic acid (Vitamin C, CHO) is a weak diprotic acid, with K = 6.8x10 and K = 2.7x10. What is the pH of a solution that contains 10.0 mg of vitamin C per 1.0 mL of solution?

In: Chemistry

A mixture of 0.10 mol of NO, 0.050 mol of H2, and 0.10 mol of H2O...

A mixture of 0.10 mol of NO, 0.050 mol of H2, and 0.10 mol of H2O is placed in a 1.0-L vessel at 300 K. The following equilibrium is established: 2NO(g)+2H2(g)←−→N2(g)+2H2O(g) At equilibrium [NO]=0.062M. Calculate the equilibrium concentration of H2. Calculate the equilibrium concentration of N2. Calculate the equilibrium concentration of H2O. Calculate Kc

In: Chemistry

A 2.0 kg glider moves in the +x direction at constant speed 2.0 m/s on a...

A 2.0 kg glider moves in the +x direction at constant speed 2.0 m/s on a frictionless horizontal air-track. The second glider of mass 1.0 kg moves in the –x-direction at a constant speed of 2.0 m/s on the same air track towards the first glider. What is the speed of the center of mass of the two gliders right after the collision?

In: Physics

Assuming 100% yield, how much hexynyl lithium is produced from the reaction that you performed in...

Assuming 100% yield, how much hexynyl lithium is produced from the reaction that you performed in the lab of LiMDS with 1-hexyne (0.22 mL)? Using 1 mL of 1.0 M lithium bis(trimethylsilyl)amide solution in THF and 0.22 mL of 1-hexyne. (1‐hexyne density = 0.71 g/mL).Show all work .

In: Chemistry

A scientist measuring the resistivity of a new metal alloy left her ammeter in another lab,...

A scientist measuring the resistivity of a new metal alloy left her ammeter in another lab, but she does have a magnetic field probe. So she creates a 7.5-m-long, 4.0-mm-diameter wire of the material, connects it to a 1.5 V battery, and measures a 5.0 mT magnetic field 1.0 mm from the surface of the wire.

In: Physics

The specific rotation, [α]D, for (-)-2-butanol is +14. What is the observed rotation for a solution...

The specific rotation, [α]D, for (-)-2-butanol is +14. What is the observed rotation for a solution of 1.0 g of (-)-2-butanol in 10 mL of water in a sample tube having a pathlength of 10 cm? ??????degrees .

The observed rotation of a solution of 1.5 g of a compound in 10 mL of water is +3.4 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? .

In: Chemistry

You receive 7500 frames from your supplier every week. You sample to General Inspection Level II...

You receive 7500 frames from your supplier every week. You sample to General Inspection Level II and use AQL = 1.0 This supplier has been very good and you have accepted all of the last ten lots. As a result, you are on reduced inspection What is your sampling plan for the next delivery? n = c =

In: Statistics and Probability

A 1.0 oz (30.0 mL, 1.00 g/mL) espresso contains 55.0 mg of caffeine (C8H10N4O2). Calculate the...

A 1.0 oz (30.0 mL, 1.00 g/mL) espresso contains 55.0 mg of caffeine (C8H10N4O2). Calculate the caffeine concentration in the following units. You may assume your espresso contains only caffeine and water for simplicity.

a. ppm

b. %w/w

c. ppb

d. Molarity

e. molality

f. Xcaffeine (mole fraction)

In: Chemistry

There are three stocks in the market: A, B, and C. The market betas for the...

  1. There are three stocks in the market: A, B, and C. The market betas for the three stocks are Beta(A) = 0.5, Beta(B) = 1.0, Beta(C) =1.5. The expected returns of the three stocks are E[R(A)] = 8%, E[R(B)] = 12%, and E[R(C)] = 17%. Based on these values, is there any violation of CAPM (i.e., are the betas and expected returns consistent with CAPM?)

In: Finance

In a population survey of patients in a rehabilitation hospital, the mean length of stay in...

In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The distribution was normally distributed. What is the percentile rank for each of the following z scores? Enter the percentile rank to the right of each z score. Assume a normal distribution.

a) 1.23 _____

b) 0.89 ______

c) -0.46 _____

d) -1.00 ______

In: Math