QUESTION 31 Imagine you are preparing an enzyme assay that requires a working concentration of 4 mM sucrose. If the concentration of sucrose in your stock solution is 100 mM and the final volume of the assay is 50 μL, how much of the sucrose stock solution do you need to add to the assay? Enter the number only for units of μL. The number of significant digits you include in your answer doesn't matter.

QUESTION 31 Imagine you are preparing an enzyme assay that requires a working concentration of 4 mM sucrose. If the concentration of sucrose in your stock solution is 100 mM and the final volume of the assay is 50 μL, how much of the sucrose stock solution do you need to add to the assay? Enter the number only for units of μL. The number of significant digits you include in your answer doesn't matter.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

You have been hired as a lab assistant! your first task is to make 5.0 L of a solution that is 35.8% NaCl (salt) by weight water. How much salt should you add to the 5.0 L of water to prepare this solution? Report the mass of salt in kilograms
What volume, in mL, of 10.9 M HCl is required to make 492 mL of 0.546 M HCl? Include 3 significant digits in your answer
Please set up the answer the correct way. I am having a hard time with putting the units in the correct spots.
The overall adenylate kinase reaction (2 ADP = AMP + ATP) is a combination of 3 reactions: ATP hydrolysis, pyrophosphate hydrolysis, and ATP formation. Show each step and provide the standard free energy (ΔG°′) for each and the overall reaction. If the adenylate kinase reaction is at equilibrium and intracellular [ATP] = 5 mM and [ADP] = 0.5 mM, calculate the concentration of AMP at pH 7 and 25 °C. Show all work. ATP (ADP+P) = -30.5 kj/mol; ATP (AMP+PP) = -45.6 kj/mol; PP = -19.2 kj/mol
Answer in scientific notation with the appropriate number of significant figures. For a laboratory experiment, you are provided with a stock solution of food dye. This is the solution from which you will prepare all of your standard solutions. The concentration of the stock solution will be approximately (7.5000x10^-5) mol/L. How many milliliters of this stock solution is needed to prepare 50.0 mL of a (1.50x10^-5) mol/L solution?
A lab assistant needs to neutralize a 3.1 M solution of HCI. If there are 350 mL of solution, what volume, in Liters, of a 1.8 M NAOH solution would have to be used? (Hint: You will need to write out the equation and balance it first.) Be sure to report your answer to the correct number of significant figures. Do not report the units (L) in your answer.
A chemist needs 16.94 mL of 1.067 M HCl. What volume in mL of 3.971 M HCl must be diluted in water to form this solution? Please report your answer in mL to 3 decimal
2.93 g Measured Volume of Water: 100.0 mL each question with correct significant figures and units. You must show calculations for determining each quantity. If necessary, use the molar mass of NaCI = 58.44 g/mol. You will be asked to show your work for each question. A.Determine the number of moles of NaCI in the solution B.Determine the number of moles of all solutes (both cations and anions) from the number of moles of NaCI that you determined above. C. Determine the mass (in kg) of solvent (assume that the density of water is 1.000 g/mL). D. the molality of all solutes.
Your 50 mL beaker has a mass of 6.65 g. You add 10.00 mL to the 50 mL beaker and now the total mass is 17.45 g. You originally used 5.14 g of NaCl to make the solution. What is the percent composition of your solution? These calculations are described in the lab procedure in detail.
Using the Iron test results below, answer the question Iron Tests and the Results 1 A cube of Fe is hit with a hammer. The cube is flattened. 2 A cube of Fe is placed in 3 M HCI(aq). Bubbles of gas form 3 A cube of Fe is heated to 1811 K. The cube melts. 4 A cube of Fe is left in damp air. The cube rusts. 5A cube of Fe is heated. The cube burns. Which tests demonstrate chemical properties? (1) 1, 3, and 4 (3) 2, 4, and 5 (2) 1,3, and 5 (4) 2 and 5
A chemist is preparing a titration which calls for 28 g of a particular acid solution, which has a density of 1.1 g/mL. What volume of the liquid should the chemist obtain?
What is the equation of the line when the data in the table below is plotted? Mass is the independent variable and volume is the dependent variable. Mass (g) Volume (ml) 1.023 2.8 2.043 5.5 3.001 8.1 3.997 10.8 What is the mass of a 3.5 ml sample? How well does the curve fit the data (how do you know)?