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When methane gas burns to form carbon dioxide and water, 803 kJ of heat energy is released.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) + 803 kJ
A) How much energy is released when 4.5 moles of CH4(g) is burned? (Show calculation)
B) How much energy is released when 4.5 g of CH4(g) is burned? (Show calculation)
C) Is this reaction endothermic or exothermic?
The ph of 0.40 M HF(aq) is 1.93. Calculate the change in ph when 0.356 g of sodium fluoride is added to 50.0 ml of the solution .
How many milliliters of water must be added to a stock solution of 6.00 M HNO3 in order to prepare 500 mL of 0.200 M HNO3 by dilution.
why do we have to redissolve the product we get from the reaction of cyclopentadiene with maleic anhydride? is it to
What is the partial pressure of each of the components. b. If the temperature is raised to 45°C, will the partial pressures change? If so, what will they be
Calcium supplements commonly contain calcium ions in the form of calium carbonate (CaCO3). If one calcium supplement weights 600. mg, how many moles of calcium are contained in each pill
Acetic acid, HC2H3O2, is a weak acid (Ka= 1.8 * 10^-5). solution A is 100.0mL of 0.10 M acetic acid, and Solution B is prepare by adding 0.0050 mol solid NaOH to solution A. One more 0.0050 mol of solid NaOH is added to solution Solution B to make..
Assume the pressure has not changed. You may apply the findings regarding percent-yield in Part A to Part B when calculating the moles of calcium carbonate.
which of the following electron configurations represent an excited state?
If all the energy obtained from burning 1.29 pounds of propane (fuel value is 11.09 kcal/g) is used to heat 124.5 kg of water at an initial temperature of 21.5 °C, what is the final temperature
how to do the Empirical Formula is confusing. The substance is Magneiusm Oxide with .16G. The mass of Magneisum is .12G
1.The enthalpy change for the following reaction is -903 kJ. Using bond energies, estimate the N-H bond energy in NH3(g). 4NH3(g) + 5O2(g)4NO(g) + 6H2O(g)
How many liters of softened water, containing a sodium concentration of 5.8×10^-2% sodium by mass, have to be consumed to exceed the FDA recommendation (less than 2.4 g sodium per day)? (Assume a water density of 1.0 g/mL.)
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