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Water is a weak electrolyte, because
Ethylene (C2H4 ), an important organic chemical, can be prepared by heating hexane (C6H14 ), at 800°C: C6H14 → C2H4 + other products If the yield of ethylene production is 42.5 %, what is the mass of hexane must be reacted to produce 481 g of ethylene
- What is the percent by volume of vinegar in a sulotion that contain 3.0 ml of acetic acid dissolved in 50.5 ml water
2.0 moles of CaCl2 in particles
0.5 moles of carbon is burned completely in oxygen. How many moles of carbon dioxide are produced?
What is the percentage concentration of 75mL of ethanol dissolved in 500mL of water?
in a bomb calorimeter, 50g of a fuel was placed into the sample dish and was allowed to undergo combustion. after the combustion, the water in the calorimeter experienced an increase in temperature from 28°c to 32°c. calculate the heat of combustion of the fuel. assume the volume of the calorimeter is 4 liters and density changes in the water to be negligible. use the heat capacity of water to be 4.18 j/gºc 2.
Assuming that the oxygen gas is collected at P = 755 mm Hg and T = 305 K with the chemical equation 2KClO3(s) → 2KCl(s) + 3O2(g), how many liters of oxygen gas are produced when 294 g of KClO3 completely react as used in the ignition of fireworks? Solve to get the correct answer
Calculate the energy required to convert the water into ice at the temperature of - 20 degree Celsius
2.0 moles of an idea has are at temperature of -133 degrees Celsius and a pressure of 2atm .what volume in dm3 will the gas occupy at that temperature? R = 0,082 atm, dm3 K -1mol-1
