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Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house.
Assuming that all the energy given off in the reaction goes to heating up only the air in the house, determine the mass of methane required to heat the air in a house by 15.0 Celcius. Assume each of the following: house dimensions are 30.0m x 35.0m x 3.2m ; specific heat capacity of air is 30 J/K*mole; 1.00 of air occupies 22.4L for all temperatures concerned.
A solution of water (Kb=0.512 C) and glucose freezes at 4.15. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 .
What is the effect 1 mol of ideal gas p1 =760kpa p2= 202kps T= 37dgree c T2= 155k does the volume changed. by what factor is change.
The metal barium crystallizes in a body-centered cubic lattice. If the density of barium is 3.51g/cm3, what is the unit cell volume?
Give TWO possible reactions you could use in each case and write an equation for each reaction.
determine the pH and the concentration of all species in a 0.01 M H2Su solution(closed system). develop the pC- pH diagram ( calculate the species concentrations and graph using a software. indicate on the pC-pH graph where your solution point lie..
If a sample is composed of 41% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
assume that the wet limestone process requires 1 metric ton of caco3 to remove 90 of the sulfer from 4 metric tons of
A particular smoke detector contains 2.15 of , with a half-life of 458 . The isotope is encased in a thin aluminum container. Calculate the mass of in grams in the detector.
What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions?
You collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen, the temperature should not exceed -10.5C. The vapor pressure of ice at 273.16K is 611 Pa
A solution is .450M in HNO3 and 1.3M in Ba(NO3)2. what is the concentrations of No3 in the solution?
The rate of the reaction of nitrogen monoxide with oxygen was measured at 25 degrees C. starting with various initial concentrations of reactants NO and O2.
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