How much heat be absorbed or released on freezing methanol
The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams of methanol?
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When 9.6 grams of NaBr are dissolved in enough water to create a 165-gram solution, what is the solution's concentration, expressed as a percent by mass?
Balance the following equation. What is the amount of Cu (in grams) necessary to precipitate 0.50 g of Ag in the presence of excess AgNO3?
Exactly 10.0 mL of an unknown sample of Ni2+ gave a current of 2.36 ?A. After 0.500 mL solution of 0.0287 M Ni2+ was added to the 10.0 mL sample, the current increased to 3.79 ?A. What is the concentration of Ni2+ in the sample?
When 355g or Bi2O3 reacts with excess carbon, (A) how many moles of Bi2O3 react? (B) how many moles of Bi form?
The volume of the balloon is 12.2 L. The hydrocarbon is 79.89% carbon and 20.11% hydrogen by mass. Determine the molecular formula of the hydrocarbon.
IR Wavelengths Ultraviolet radiation is of particular relevance to a study of the ozone layer. Why? What about UV radiation affects ozone? What role does oxygen play with regard to filtering sunlight?
Manganese makes up 1.3 x 10-4 percent by mass of the elements found in a normal healthy body. How many grams of manganese would be found in the body of a person weighing 183 pounds?
The mass of an average blueberry is 0.78 g and the mass of an automobile is 2100 kg. Find the number of automobiles whose total mass is the same as 1.0 mol blueberries. Express your answer using two significant figures.
Its melting point is 962°C, and its heat of fusion is 11.3 kJ/mol. What quantity of heat, in joules, is required to change 7.50 g of silver from solid at 25°C to liquid at 962°C?
What are the kinds of attractive forces that might bind congo red to cotton fabric
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