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If you pipetted 50.00 mL of an unknown brine and titrated it with 37.64 mL of 0.1024 M silver nitrate solution. Calculate the ppm salt (NaCl) in the sample.
The heat of fusion of water is 6.01kj/mol, and the molar heat capacity is 36.6 J/(K*mol) for ice and 75.3 J/(K*mol) for liquid water.
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
What is the silver ion concentration in a solution prepared by mixing 341 mL of 0.350 M silver nitrate with 375 mL of 0.437 M sodium phosphate
Predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixed:
In a separate experiment, all the sulphur in another 0.464 g sample was converted to 0.859 g of BaSO4. What is the empirical formula of the unknown compound
The volume of a sample of nitrogen gas initially at STP is decreased and at the same time the temperature is increased. What happens to the pressure of the sample?
At high temperatures, ammonia can react with oxygen according to the following unbalanced reaction: NH3 + O2 ---> NO + H2O If 5.76 moles of NH3 react with 12.2 moles of oxygen
The principal quantum number (n): A. specifies the principal shell of the orbital. B. specifies the subshell of the orbital. C. specifies the 3-D shape of the orbital
What statement in incorrect about the following pairs of sugars? Galactose and mannose are diastereomers
The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
The initial mass of the crude ether was 141mg. The mass after recrystallization was 121mg. Calculate the percent recovery from recrystallization.
An unknown compound X, is thought to have a carboxyl group with a pka of 2.0 and another ionizable group with a pka between 5 and 8. When 75 ml of 0.1 M NaOH was added to 100 ml of a 0.1 m solution of X at pH 2.0, the pH increased to 6.72.
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