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How much heat is required to warm 1.50 L of water from 30.0 C to 100.0 C. (Assume a density of 1.0g/mL for the water.)
What is the particular advantage to know the penetration depth of X-rays impinging upon the sample when performing XPS analysis.
Prepare 3 liters of 0.5 M glutamic acid buffer, with pH 4.1, from solid glutamic acid (pKa=4.2) and 2 M NaOH. How many grams of solid glutamic acid (MW=147 g/mol) would you have to use and how many mls of 2 M NaOH would you need?
For the reaction NO2 + O3 = N2O5 ,the activation energy is 18kj/mol and the overall delta E is -136kj/mol. how many times faster will the reaction occur at 50C than 0C for the forward reaction
tartaric acid c4h6o6 has two acidic hydrogens. the acid is often present in wines and precipitates from solution as
You have a 1.0 mL sample of unknown concentration that requires 8.0 mL of titrant to change the color of the solution. How many mg of ascorbic acid are in your unknown sample
Three compounds are to be separated using HPLC. Compound A and Compound B have the same polarity but are more polar that Compound C. Compound A and Compound C have the same molecular weight (5000), and Compound B has a molecular weight of 26,000.
In the boron trifluoride etherate-catalyzed reaction of acetic anhydride and salicylic acid to produce acetylsalicylic acid, or aspirin, anhydrous conditions prevail. So, what serves as the base, as water cannot?
What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions?
In the formation of smog, nitrogen and oxygen gas react to form nitrogen dioxide: N2 (g) + 2O2(g) ---> 2NO2 (g). How many grams of NO2 will be produced when 1.7L of nitrogen at 810 mmHg and 24C are completely reacted
What is the length of the side of the unit cell for iron and what is the atomic radius?
How many molecules of substance B are produced when 30.0 g of substance A reacts? The molar mass of substance A is 23.5 g/mol. A) Convert the mass of A to moles
Consider a sample of excited atoms that lie 3.483*10^-19 J above the ground state. Determine the emission wavelength of these atoms.
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