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An unknown acid has a molar mass of 60.05 g/mol. Given the following percent composition, what is the molecular formula? 40%C, 6.7% H, 53.3% O
What volume in mL of 0.075 M NaOH is required to neutralize the following solutions? A. 200 mL of a 0.0500 M H2C2O4(diprotic acid) solution.
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals?
134 mole of KCl and .167 mole of CaCl2 were dissolved in water. What is the total number of Cl ions in the solution?
How many moles of photons with a frequency of 1.22e14 hz are necessary to produce
An empty beaker has a mass of 38.112 g. 10.00 mL of ethyl alcohol are placed in thte beaker and the mass of the beaker with ethanol is found to be 45.268 g
Suppose you have a sample of sodium weighing 11.42 g. How many atoms of sodium are present in the sample.
Which of the following would be the best procedure for extracting acetaldehyde from an aqueous layer to the organic layer? a. Extracting the aqueous layer one time with 200 mL of the organic solvent.
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
calculate the pH of a solution that is prepared by mixing 75ml of 0.20 M (NH4)2SO4
A canister is filled with 390 of ice and 100 of liquid water, both at 0.0 . The canister is placed in an oven until all the has boiled off and the canister is empty. How much energy in calories was absorbed?
A reaction mixture containing 20 mM O-acetyl serine, 50 mM NaCl, 50 mM HEPES buffer (pH 7.6), and O-acetyl serine acetylase is incubated in 37C until O-acetyl serine is completely hydrolyzed. What is the pH of the mixture at the end of the reactio..
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