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26.0cm of a solution containinh 1.86g of X2CO3 in 250 reacted completely with 27.0cm of solution contain 3.65g of HCL per dm,calculate the molar mass of X2CO3 and relative atomic mass of X, and identify X.
Calculate the pH of each of the following buffered solutions. to 1.00 L of each of the four solutions. (a) 0.100 M propanoic acid (HC3H5O2, Ka= 1.3 10-5) (b) 0.100 M sodium propanoate (NaC3H5O2)
adding the two portions of water into your calorimeter the temperature of the mixed portions of water to be 45 oC. determine the heat capacity of the calorimeter?
What is the boiling point of a solution made using 813g of sucrose, C12H22O11, in 0.275 kg of water,H2O.
An industrial hygiene survey has been conducted to determine whether exposure of workers to ethyl benzene (molecular weight 106) exceeded the OSHA PEL of 100 ppm.
total molarity of acid and conjugate base in this buffer. A boy mixes 5.70mL of a 0.330M Hydrochloric acid solution to the beaker. Determine the pH change if The pKa of acetic acid = 4.760.
At pH 6.00 and pE 2.10, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L. What volume would this gas occupy at 110.°C and 0.795 atm?
Phosphorus-32 has a half-life of 14.0days . Starting with 6.00g of 32p , how many grams of phosphorous will remain after 42.0days.
Determine what was the % of excess air used? If The reactant entered at 93 degrees Celsius and
The reaction between solid sodium and Iron (III) oxide is one in a series of reactions that inflates an automobile airbag.
What is the molar mass of this substance, express your answer in g/mol and determine the moloar concentraitions Cr 2 O 7 ^2 and of K + ?
What volume of a concentrated HCl solution, which is 36.0% by mass and has a density of 1.179 g/cm3, should be used to make 5.1 L of an solution with a pH of 1.5.
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