A. Unknown (a solution where the amount of protein is not known): Obtain three microfuge tubes. Label them 1:50, 1:100 and 1:250. Obtain a 40 μl stock of unknown protein sample (UK). Create dilutions of the UK sample based upon Table 1 (use the P1000 to transfer volumes of water and the P20 for volumes of the stock). Be sure to understand what the dilution factor is for each sample (dilution factor = the number used to determine the actual concentration of the stock UK after the diluted samples are analyzed). Table #1 Generation of Serial Dilutions Sample ID 1:50 1:100 1:250 Water 490 ul 495 ul 498 μl Unknown Stock 10 ul 5 μl 2 μl

When you are presented with additional details, it can sometimes be a little more difficult to determine which information is necessary and how molarity should be applied. Using both a solution map and dimensional analysis can help clarify which information and conversion factors are necessary to determine the desired value. The following dimensional analysis setup could be used to determine the theoretical mass of AlBr3 (s) (molecular mass = 266.69 g/mol ) produced based on reacting 86.9 g of a 0.048 mol/L solution of Br2 (1) (density = 1036 g/L ) with excess Al(s) as described in the following equation: 3B12 (1) + 2A1(s) → 2AIBr3 (s) Complete the dimensional analysis for calculating the mass of the product by placing the values of each conversion factor according to whether they should appear in the numerator or denominator when calculating the mass of AlBr3 (s) produced from a sample of Br2 (1). Drag the appropriate values to their respective targets. • View Available Hint(s) Reset…

By pipet, 9.00 mL of a 0.823 M stock solution of potassium permanganate (KMNO4) was transferred to a 50.00-mL volumetric flask and diluted to the calibration mark. Determine the molarity of the resulting solution. HA Value Units

Balance the chemical equation

Part A 4. How many grams of silver nitrate must react to give 1.00 g of Ag? Cu(s)+2A£NO;(ag)→Cu(NO3)2 (aq)+2Ag(s) Express your answer with the appropriate units. HA μΑ MAGNO3 Value Units Submit Previous Answers Request Answer X Incorrect; Try Again Provide Feedback

Solve using dimensional analysis. Show the complete solution. Do not round off nonfinal answers. Box your final answer.

2A. Come up with a stoichiometry question with the balanced equation CH4+2O2->CO2+2H2O. This question must be solved/ answered. All work needs to be shown.

Say you have a stock of 15% NaCl and need a reaction concentration of 1% in a total reaction volume of 25ul.  How many ul of the 15% NaCl stock would you need to add to the reaction tube?

A 103.0 mL aqueous solution of 43.0 mM COCI2 is combined with 594.0 mL of aqueous 74.0 mM K3PO4. If the limiting reagent is completed consumed during this reaction, how many grams of solid precipitate will be produced? Express your answer in units of grams using at least three significant figures.

Consider the following chemical reaction HCl (aq)  + HgNO3 (aq) à Hg2Cl2 (s) + HNO3 (aq) If 20.0 grams of HCl is mixed with 30.0 grams of HgNO3     Determine the excess reactant   The amount of the solid precipitate that was recovered equals to .................. grams , if the percentage yield from this reaction was determined to be 78.4%. Write the net ionic equation for the chemical reaction   Determine the type of this chemical reaction