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Calculate the amount of heat energy required to convert 55.0 g of water at 62.5 degrees Celsius to steam at 124.0 degrees Celsius. A) 1.35 x 10^2 kJ B) 2.25 x 10^3 kJ C)1.23 x 10^2 kJ D) 0.862 kJ E) 2.67 kJ
Determine the ΔH solution for this compound If the heat of solvation for this compound = -30.8 kJ/mol , crystal lattice energy = -62.2 kJ/mol.
Energy in the amount of 421 J is added to a 69g sample of water at a temperature of 23.0 C. What will be the final temperature of the water?
Draw the Lewis structures of the following compounds and find out number of electron groups, number of lone-pairs, geometry of electron
diluted with pure air to reduce the methane concentration to the lower flammability limit . calculate the rquire flow rate of air in mol/h and the precent by mass of oxygen in the products gas
Enough of a monoprotic acid is dissolved in water to produce a 0.0113 M solution. The pH of the resulting solution is 6.43
When ethane C2H6 rea cts with chlorine Cl2 the main product is C2H5Cl but other products containing Cl such as C2H4Cl2 are also obtained in small quantities.
60.0 mL of a 0.450 M solution is titrated with 0.570 M . Calculate the volume of required to reach the equivalence point.
A room contains 46 of air.How many kilowatt-hours of energy are necessary to heat the air in the house from 9 to 30? The heat capacity of air is 1.03.
Draw a diagram showing the stratification in a body of water. Label the different layers and describe the type of chemistry (and species) that occurs at each level.
The Milikan experiment is important because it determined the of an . Using Thomson's and Milikan's the of an was determined. Rutherford's experiment is important because it clearly demonstrated that the is mostly
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 7.60x10^2 cal of work done on it
What would the change in temperature be in each change if 1 mole of an ideal gas is subjected to numerous changes in state, C= 12.47 J/Kmol.?
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