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what the oxidation state P in PO4^-2?what the oxidation state O in PO4^-2?what the oxidation state Mn in MnO4^-?what the oxidation state O in MnO4^-?what the oxidation state of Br2?
The piece of iron with a mass 102.9g was submerged in a graduated cylinder filled with water. The initial level of water was 20.0 ml. The density of iron is 7.86 g/ml.
compute the pH at the temperature of twenty five degrees Celsius of a solution combined by adding 50 mL of 1.60 M sodium hydroxide solution
What is the molality of a solution that is composed of 265 g of acetone ((CH3)2CO) dissolved in 177 g of water.
A 1.70-g sample of a large biomolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
A chemist prepares a sample of hydrogen bromide and finds that it occupies 252 mL at 70C and 464 Torr. What volume would it occupy at 0C at the same pressure.
Compute the enthalpy change for this reaction per mole of this substance and dissolves via the reaction and the temperature of the solution rises to twenty eight degree celsius.
Determine What is the ? Ssys for the process?(if it is given the specific heat capacity for ethanol is 2.42 J/g K.) express your answer in units of J/K
A 250.0 ml sample of gaseous hydrogen bromide, measured at 22.9 C and 0.930 atm, was dissolved in sufficient pure water to form 250.0 ml of solution. What was the pH of that solution.
Determine what would be the final temperature if thirty grams of Al at 95 degrees Celsius are added to 100 grams of H 2 O at 25 degrees Celsius?
Determine the acid content of the vinegar as wt % CH3COOH, acetic acid
The density of chloroform, a widely used organic solvent, is 1.4832 at 20 . How many milliliters would you use if you wanted 119.0 of chloroform.
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
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