How much h2o do we add to get the desired concentration

Assignment Help Chemistry
Reference no: EM13267080

a. We need 20 micrograms of the protein for an experiment. What volume of protein solution do we need?

b. Suppose we want a soln containing 150 micrograms of the protein at a concentration of .5 mg/ml. To do this we will first evaporate the liquid from enough of the protein soln to get 150 micrograms. How much coln do we need to start with? How much H2O do we add to get the desired concentration?

c. If the protein has a MW of 15000, express its initial concentration in micromoles/ml and in micromoles/microliters. If we want 2 micromoles of the protein for a rxn, how much of the original soln do we need?

d. Suppose we want 1 ml of a 10 microgram/ml soln. How much H2O and protein stock must we add to get this?

e. Suppose we want 100 microliters of .1 micrograms/ml soln. How much H2O and protein stock must we add to get this?

Reference no: EM13267080

Questions Cloud

Find energies of lowest three distinct non-degenerate states : Consider an electron in a cubic crystal of a semiconductor material. Such an electron is free to move throughout the cubic volume of the crystal, but cannot escape outside the cube. It is trapped in a three-dimensional infinite potential well.
Calculate amount of sales assuming a fifo flow of inventory : Monroe marks up its goods at 40% on cost. At the end of the year, ending inventory showed 105 units remaining. calculate the amount of sales assuming a FIFO flow of inventory.
Complete a trend analysis : Using 2012 as the base year, complete a trend analysis. Round each precent to the nearest whole percent.
What is the mass of the star beta and alpha : The two stars in a certain binary star system move in circular orbits. The first star, Alpha, has an orbital speed of 36.0km/s. The second star, Beta, What is the mass of the star Beta and alpha
How much h2o do we add to get the desired concentration : Suppose we want a soln containing 150 micrograms of the protein at a concentration of .5 mg/ml. To do this we will first evaporate the liquid from enough of the protein soln to get 150 micrograms. How much coln do we need to start with? How much H..
What is the depreciation expense in year 2 for the oven : What is the depreciation expense in year 2 for the oven? Use the straight-line method.
Find the voltage drop vab where a is the point : Find the voltage drop Vab where a is the point (1,0,0) and b is (2,pi/2,1). In the the description of these points, the cylindrical coordinate notation (p,phi,z) is used, where dimensions are in [m] and angles are in radians. Voltage drop is path ..
What is the percent increase in the base : (a) What is the percent increase in the base? Round to the nearest hundredth percent. (b) What is Joe's increase in Social Security tax for the new year?
Explain equilibrium constant at a particular temperature : Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of NO2(g).

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the best description of the t2g orbitals in [cocn6]3

Is the best description of the t2g orbitals in [CoCN6]3- bonding, non-bonding, or antibonding? Explain your choice.

  Explain the engine coolant is pure ethylene glycol

Make the following assumptions in your calculation; at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is no..

  State dissociation of the solute and ideal solution behavior

water to give a solution that has a vapor pressure of 37.2 torr at 35 °C? Assume complete dissociation of the solute and ideal solution behavior

  Explain what is the ci- concentration in milliiequivalents

a sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution

  How many grams of malonic acid would be needed

How many grams of malonic acid would be needed to make 50.0 milliliters (0.0500 L) of 0.200 M malonic acid?

  Calculate the standard cell potential

Calculate the standard potential for this reaction. Normally, X is Fe. Here it is some unknown metal, allowing for somewhat random values for ΔGo.

  What is the concentration of f- in the new solution

When 20 mL of a 120 mL stock solution containing 2 M BaF2 is diluted to 80 mL, what is the concentration of F- in the new solution.

  What is the partial pressure of ethane in the flask

A 1-L flask is filled with 1.10g of argon at 25C . A sample of ethane vapor is added to the same flask until the total pressure is 1.25amt .What is the partial pressure of argon, in the flask? What is the partial pressure of ethane in the flask.

  What is the concentration of hydrogen ions

What is the concentration of hydrogen ions in a solution containing 0.321 M HOCN (cyanic acid) and 0.223 M (NaOCN) (sodium cyanate)? The ionization constant of cyanic acid is 3.5 × 10-4.

  Compute the molar mass of the unknown acid

A second sample of this acid weighing 3.00 grams is added to the tirated sample and the pH is 6.60. Calcualte the molar mass of the unknown acid and determine the value of Ka for this acid.

  How many grams of sucralose would needed for a solution

How many grams of sucralose would you need for a solution that has the same sweetness as one made with 2.00g of sugar? Please show how to solve problem

  Draw a series of titration curves for the titration

Draw a series of titration curves for the titration of a strong base with a  strong acid where the concentration of the acid is 10 -1 , 10 -2 , and

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd