How do you prepare 50ml 10^-6 M Na2SO4 solution considering your most sensitive weigher cannot measure...

Question

Question

How do you prepare 50ml 10^-6 M Na2SO4 solution considering your most sensitive weigher cannot measure less than 0,001g (Na2SO4= 142,04 g/mol)

Answer 1

Answer #1

dal 1 olgt. Can be Calculated dising mularity ecuation molarits - mass x laro a moto many vol-Cone) siven molalih = 100 Voli

Answer 2

Similar Homework Help Questions

How do you prepare a 6 mM solution of zinc chloride in 0.1 M MOPS buffer?...

How do you prepare a 6 mM solution of zinc chloride in 0.1 M MOPS buffer? How do you know how much buffer to put in the solution for the desired final concentration? Same question for preparing a 0.4 mM solution of a peptide with molecular weight of 1565.8 g/mol in 0.1 M MOPS? I dont understand how the buffer can have a different concentration than final solution but be used to make the solution?
Sensation &Perception- Chapter 2 Human beings do not have the most sensitive or acute sensory systems in the ani...

Sensation &Perception- Chapter 2 Human beings do not have the most sensitive or acute sensory systems in the animal world. Some bats can hear frequencies that exceed 100,000 Hertz, dolphins receive auditory messages from great distances, and cats can probably localize sounds better than we do because they can rotate their ears. Rats see better at night than we can, eagles have more acute distance vision, and horses have a wider visual field. Rabbits have more taste buds than we...
10)You need to prepare 250 ml 20mM NaH2PO4 solution. By using NaH2PO4.4H2O, how do you prepare...

10)You need to prepare 250 ml 20mM NaH2PO4 solution. By using NaH2PO4.4H2O, how do you prepare this solution? (NaH2PO4 120g/mol, NaH2PO4.4H2O=192g/mol) wwwwwww w w ww ww ww.ww www wwwww w ww www ww. w ww wwwa

10) You need to prepare 250 ml 20mm NaH2PO4 solution. By using NaH2PO4.4H,0 , how do...

10) You need to prepare 250 ml 20mm NaH2PO4 solution. By using NaH2PO4.4H,0 , how do you prepare this solution? (NaH2PO4=120g/mol, NaH2PO4.4H,O=192g/mol)
Your supervisor asks you to prepare 474.00 mL of ammonium buffer solution 0.1 M with pH=...

Your supervisor asks you to prepare 474.00 mL of ammonium buffer solution 0.1 M with pH= 9.00, from a concentrated ammonia solution (16%w/w, d=0.98g/mL) and solid ammonium chloride (97% w/w). (MW of NH3 = 17.031 g/mol and FW of NH4Cl = 53.491 g/mol and pKa NH4+/NH3 =9.24). How many grams of the solid ammonium chloride do you need? Consider two decimal places for the answer.
How many mLs of each would you need to make 50mL of solution Final concentration of...

How many mLs of each would you need to make 50mL of solution Final concentration of solutes . Stock concentrations MgSO4 0.83 mM MgSO4 1 M CaCl2 0.9 mM CaCl2 1 M KHCO3 0.04 mM KHCO3 0.1 M NaHCO3 0.9 mM NaHCO3 0.5 M Ocean Salts 0.21 g/L Ocean Salts 21 g/L

How many moles of sebacoyl chloride do you have if you measure out 5 mL of...

How many moles of sebacoyl chloride do you have if you measure out 5 mL of a 9% volume/volume solution in cyclohexane? Density: Cyclohexane 0.7781 g/mL. Sebacoyl chloride 1.121 g/mL Molar mass: Cyclohexane 84.16 g/mol. Sebacoyl chloride 239.14 g/mol
Explain how you would prepare 10 ml of a 50 μM solution of caffeine. The Mw...

Explain how you would prepare 10 ml of a 50 μM solution of caffeine. The Mw of caffeine is 456 g/mol.
A solution of Na2SO4 is added dropwise to a solution that is 1.1×10−2 M in Ba2+...

A solution of Na2SO4 is added dropwise to a solution that is 1.1×10−2 M in Ba2+ and 1.1×10−2 M in Sr2+. The solubility-product constants are as follows: BaSO4:SrSO4:KspKsp==1.1×10−103.2×10−7 You may want to reference(Pages 751 - 753) Section 17.6 while completing this problem. Which cation will precipitate first? Ba2+ precipitates first. Sr2+ precipitates first. What concentration of SO42− is necessary to begin precipitation? (Neglect volume changes.) Express the molarity to two significant digits. 1.0×10−8 M ***Need help with this answer. 1.)...

1. Calculate and describe how to prepare a 50.0 mL of 2.50x102 M solution of Morphine (C17H19NO3) write the procedu...

1. Calculate and describe how to prepare a 50.0 mL of 2.50x102 M solution of Morphine (C17H19NO3) write the procedure for preparing the solution: remember to note how many grams of your drug and how much water to add (hint: it is not 50mL of water)?