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The combustion of natural gas, methane (CH4), is an exothermic reaction.
Change of H = -890 kJ
Calculate the amount of heat liberated when 4.80 g CH4 reacts with an excess of oxygen.
for a certain change, the value of change in U is -2.37kJ. during the change the system absorbs 650 joules. how much work did the system do?
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
a student prepared aspirin in a laboratory experiment using the reaction. the student reacted 1.50g salicylic acid with 2.00g acetic anhydride. the yield was 1.50g aspirin. calculate the theoretical yield and the percent yield for this experiment.
25.00 ml aliquots of thiis solution was titrated with monoprotic strong base NaOH (0.0800 M). The titre volume of NaOH was 40.00ml. Calculate the molecular weight of H2A.
A sample of 6.022 g of CH4 is enclosed in a 12 L container at 402 K. What is its pressure in atmospheres
Calculate the final temperature when a 24.7 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 78.0 oC. Assume that there is no loss or gain of heat from the surroundings.
Calculate the feed rate of humid air in SCMH?Vapor pressures of water at 32 °C and 4 °C are 35.7 mm Hg and 6.1 mm Hg respectively.
A 15.0 gram sample of chromic acid is dissolved in enough water to produce 275 mL of solution. The concentration of the solution is ?
Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed? C3H8 + 5 O2 → 3 CO2 + 4 H2O
Graphite is a semi-metal composed of sheets of fused benzene rings. There are no bonds between sheets, only van der Waals interactions
Adipic acid and citric acid have very similar melting points. Given two unkown samples, one being citric and the other adipic acid
Calculate the basic buffer capacity of a solution of 50.00 mL of 0.334 M HC2H3O2 to which is added 50.00 mL of 0.154
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