Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
You can also get an incorrect percent yield of over 100%. Many chemical reactions of course occur in aqueous solutions. Therefore when you are measuring the final mass of product, you often fail to heat off all the water and you think you have a pure crystalline product but there is actually water still trapped in there. Therefore you can get a percent yield of 102%.
Why would this be worse then a percent yield of 98%? They are both off by 2%?
Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 865 mL of a 36.0% (w/v) sucrose solution?
Calculate the pH of a buffer composed of .50 M formic acid (HCO2H) and .70 M sodium formate (HCO2-Na+) before and after the addition of 10.0 ml of 1.0 M HCL
How many moles of water vapor h20 react with one mole of charcoal, c, according to the balane chemical equation
Imidazole is a weak acid, and thus reacts with strong bases to form the corresponding anion. Show this reaction, and draw resonance structures that account for the stability of conjugate base.
Calculate the entropy change for the vaporization of liquid methane and liquid hexane using the following data, Methane CH4 -- Boiling point= 112K Delta H(vap) = 8.20kJ/mol
estimate the volume of 5 M NaOH must be added to adjust the pH from 4 to 9 solution of 100mL 100mM phosphoric acid
a piece of 122 grams metal with is placed in a 50 ml graduated cylinder. determine what would be the density of the
Which properties are the same for both reactions and which are different? the number of atoms of each element, the state of the methane molecules, the enthalpy change of the reaction, the state of the carbon atoms.
Titanium take place in the magnetic mineral ilmenite (FeTiO3) which is habitually found mixed up with sand. The ilmenite can be separated from the sand with magnets. If the titanium can then be extracted from the ilmenite by the following set of r..
Consider a 0.65 m column with van Deemter parameters A=0.22 mm, B=21.7 mm mL/min, and C=0.018 mm min/mL. If it takes at least 85 theoretical plates to fully separate two solutes, what range of flow rates can be used to separate the solutes? (Pleas..
A gas stream that contains 1.50 mole% CO2 flows through a pipeline. 20.0 kg/min of CO2 is injected into the line. A sample of the gas is drawn from a point in the line 10 meters downstream of the injection point and found to contain 2.3 mole% CO2.
Determine the pH of a 0.0034 M HNO3 solution. I don't know what to do. My teacher is out and our student teacher is not teaching as well as he should be.
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd