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Consider the following reaction at equilibrium:
2CO2(g) <--> 2CO(g) + O2(g) Change in H degree = -514kJ
a) increase partial pressure of CO2 at equilibrium
b) increase partial pressure of CO at equilibrium
c) decrease partial pressure of CO2 at equilibrium
d) increase the value of the equilibrium constant
e) decrease the value of the equilibrium constant
An unknown metal X with a mass of 28 grams absorbs 58 J of heat. calculate the heat capacity if Its temperature raises from 31.1 °C to 39.9 °C.
How many calories are required to warm 15.0 g of water from 75 C to 100.0 C and convert it to steam at 100.0 C? The heat of vaporization of water is 540 cal/g.
the density of an aqueous ethanol solution is .789 g/mol. How many grams of ethanol should be mixed with water to make 225mL to make a 4.5% ethanol solution?
Consider a stoppered flask containing benzene, iodine, and air, which has reached equilibrium at 298K. Which one of the following statements concerning the system at equilibrium is true?
Hydrogen cyanide is prepared from ammonia (NH3) and natural gas (CH4).2 NH3 (g) + 3 O2 (g) + 2 CH4 (g) → 2 HCN (g) + 6 H2O (g)
175g of water was heated from 15c to 88c. how many calories were absorbed by the water
What is a zymogen? Is it used over and over like other enzymes? And what is the physiological advantage
Calculate the difference in pH when 4.01 g of NaClO is added to 364.8 mL of 0.50 M HClO. Ignore any changes in volume.
What volume would 50.0 L of Helium gas at a pressure of 736 Torr and 20 C occupy at STP
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
An odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas.
Consider a container sealed with a small opening. A mixture of several gases are added to the container. Assuming the gases do not react, indicate the order that the gases escape out of the container
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