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1.30 grams of ammonium nitrate is combined with 74.0 grams of H2O In a coffee-cup calorimeter, at an initial temperature of 25 degree celsius. The final temperature of the calorimeter contents =23.53°C After dissolution of the salt,. Assuming the solution has a heat capacity = 4.18 J/°C · g (assuming no heat loss to the calorimeter,) compute the enthalpy change for the dissolution of ammonium nitrate express your answers in units of kJ/mol.
Determine the total number of atoms in this chemical formula and calculate the molar mass of the solute and how many moles of solute are in the solution?
what is the correct expression for computing the volume of gas at STP and determine What is the mass percent yield from 1.79 g of Sb in excess S, is obtained if 1.14 g of Sb 2 S 3 ?
What will be the resultant pressure when the stopcock is opened?
Fundamentals of acids and bases - Water self ionizes to a small extent creating equal concentrations of hydronium and hydroxide ions. Find the molar concentration of these ions in water at 25 o C?
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
Determination of the partial pressures of the gases - Find the partial pressure of each of these gases in the final product mixture.
Estimate the ratios of the basic and acidic forms of the histidine side chain
Explain the structural feature of Acetanilide molecule - Identify one structural feature of the acetanilide molecule
Determine the mass of snow that can be completely melted - Determine the mass of snow (frozen water) that can be completely melted with the application
Calculate the pH of this solution? if we want to lower the pH by one unit of this solution then How many mL of 0.1 M H 3 PO 4 should be added to this solution?
The mass of an Argon atom is more than that of a Helium atom. Does that mean that because of Argon has larger mass, it exerts a higher pressure on the walls of container than Helium at the same volume, molar density and temperature? Give explanati..
What are the total pressure in the flask and the partial pressure of HOF after exactly 30 minutes and After 45 minutes If the partial pressure of HOF in a 1.00-L flask is initially1.00 × 10 2 mm Hg at 25 °C?
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