Chemistry, 10.03.2021 23:50 felicityhanson1252
Use the following equation for the combustion of methane gas.
CH4(9) +202(g) + CO2(g) + 2H2O(1)
In a certain reaction at STP, 29.2 L of methane is combusted
with 63.3 L of oxygen.
What volume of excess reactant remains after the reaction is
complete?
Answers: 3
Chemistry, 22.06.2019 05:30
A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.
Answers: 1
Chemistry, 22.06.2019 07:00
How far is the region from the equator or control climate
Answers: 1
Chemistry, 22.06.2019 12:00
What is the percentage of hydrogen in nitrogen trihydride
Answers: 1
Chemistry, 22.06.2019 20:00
Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)
Answers: 2
Use the following equation for the combustion of methane gas.
CH4(9) +202(g) + CO2(g) + 2H2O(1)
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