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When 1 mol of CO (g) forms from its elements, 110.5 kJ of heat is released.
a. Write a balanced thermochemical equation for formation of one mole of CO.
b. How much heat change is involved when 6.80 g of CO decomposes to its elements?
A cool solution of sodium nitrite and a solution of the amine in an ice bath. Moderately concentrated hydrochloric acid is added.
a sample of nitrogen gas occupies 1.55 L at 27.0 C and 1.00 atm pressure. What will the volume be -100 C and the same pressure?
when 0.120 mol of carbonis burned in a closed vessel with 6.90g of oxygen. how many grams of carbon dioxide can form??
90.0 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.5.
calculate which reactant is the limiting reactant. In other words, the formula is CuSO4+ 5H20. Given the limiting reactant above, how much copper, in grams, should be produced by this reaction.
A 14.0g sample of an unknown gas occupies 10.8L at a temperature of 30 degrees celsius and a pressure of 750mmHg. What is the molar mass of the gas
Arrange the following solutions in descending order according to the volume of each that will react with 1L of 1M HCl a) 1 M NaOH b) 1.5 M Ca(OH)2 c) 2 M KOH d) 0.6 M Ba(OH)2 Give the volumes of each solution needed for the reaction
Rubidium has two naturally occurring isotopes with the following masses and natural abundances, Calculate the atomic weight of rubidium.
Heat realsed by combustion of ethyl ether, 1. In earlier times, ethyl ether was commonly used as an anesthetic. It is, however, highly flammable. When 5.0 mL of ethyl ether C4H10 (l), (d=0.714 g/mL) is burned in a bomb calorimeter
What is the total sample size (in grams) for a sample of disulfur octoxide which contains 3.52 g of oxygen.
A piece of solid carbon dioxide, with a mass of 7.8g is placed in a 4.0L otherwise empty container at 27 deg C. What is the pressure in the container after all the carbon dioxide vaporizes?
If 25 ml of solution A is needed to make a 0.7 liters with a final concentration of 1.5%, what was the concentration percentage of the stock solution
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