# biology 110

you are making a standard to be used to measure protien concentration. you have added 2ml of protien, 3ml of water, and 4ml of an indicator dye. How would you prepare the blank for this experiment?

we are using the Spectrophotometer

1. 👍
2. 👎
3. 👁

## Similar Questions

1. ### Chemistry

The molar mass of the reagent, Fe(NH4)2(SO4)2.6H2O is 392.14 g/mol. Now suppose the measured mass of Fe(NH4)2(SO4)2.6H2O during the practical was 0.0218 g and this was dissolved in 50ml of deionized water that contains 1 to 2ml of

2. ### Statistics

is the standard deviation a measure of the center or distribution... my teacher told me center i read the article and i\'ve been lead to believe its a measure of the distribution not the center... if it is a measure of the center

3. ### Geometry

In Triangle XYZ, the measure of angle X is 5/8 as large as the measure of angle Y. If the measure of angle Z is 1/4 as large as the measure of the angle Y, what's the measure of all three angles. I've tried making up numbers to

4. ### Chemistry university

what is the ph of 50ml buffer solution which is 2M in CH3COOH and 2M in CH3CooNa? 1 Initial PH before the addition of acids and base? 2 What is the new PH after 2ml of 6.00M HCl is added to this buffer? 3 what is the new PH after

1. ### Chemistry

We had a lab where the standard solution was potassium hdrogenphthalate. In this we added 3 drops of phenolphtalein indicator and then we ran sodium hydroxide into the solution. We did four different flasks and the final readings

2. ### chemistry

You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1896 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute

3. ### Chemistry

I have no idea where to even start with this problem on my pre-lab! For part of the experiment, you will need to prepare 100 mL of 0.025 M CH3CO2H, starting from commercial "glacial" acetic acid, which has a concentration of 17.4

4. ### Chemistry

Calculate mass of iron in tablet by spectroscopy? I have to calculate the mass of iron in a tablet..The manufacturers claim it contains 60 mg elemental iron. background info: The tablet was crushed and dissolved in 25ml of 6M Hcl,

1. ### chemistry

1) All of the following are oxidation-reduction reactions except (a) 2Al(s) + Fe2O3(s) ¨A12O3(s) + 2Fe(s) (b) (NH4)2Cr2O7(s) ¨ Cr2O3(s) + N2(g) + H2O(1) (c) Cu(s) + 2H2SO4(aq) ¨ CuSO4(aq) + SO2(g) + 2H2O(1) (d) Hg(NO3)2 +

2. ### Chem

There are three questions in particular that I am having problems with. Here they are 1. A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration

3. ### science

10. A gardener needs 2000ml of insecticide solution with a concentration of 7.0% by volume concentration. The volume of the solution is... A)3.5x10^1ml B)1.4x10^2ml C)2.0x10^3ml D)1.4x10^4ml 12. A student dissolves 45.2 g of

4. ### Chemistry

A blood serum sample containing Na+ gave an emission signal of 4.27 mV. A small volume of concentrated standard Na+ was then added to increase the Na+ concentration by 0.102 M, without significantly diluting the sample. This