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an office heater puts out 2070 Btus of energy in the form of heat per hour. how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater
How many grams of Ag2S can be generated from a mixture of 1.85 g Na2S and 3.58 g of AgNO3 given the following unbalanced reaction:
solution of ephedrine was determined with a pH meter andwas found to be 10.70. Calculate the pKb for ephedrine.
calculate the number of moles of KOH in 5.50 mL of a 0.360 M KOH solution.What is the pOH of the solution?
If it were possible to obtain 100% yield, when the temperature was returned to the origenal value what would be the partial pressure of each gas be?
Which of the following is not true regarding social development?
The molar heat of vaporization at 298 K for diethyl ether(C4H10O) is 26.0 kj/mol. How much heat would be requiered to vaporize 0.714 g of ether at 289 K?
The half life for the first order decay of 99Mo is 66.02 hours. How long will it take for a sample of 99Mo to decay
What is the new molarity of a solution when 650mL of water are added to 500.0mL of a 3.2 molar solution?
where it is burned with 12% excess air. Calculate the required flow rate of air in SCMH(standard cubic meters per hour).
Nitrogen has only two isotopes of appreciable natural abundance: 14N, with atomic mass of 14.00307 amu; and 15N with atomic mass of 15.00011 amu.
If 6.20 mol calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2) will be produced?
Gold can be hammered into extremely thin sheets called gold leaf. If a 202-mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 2.4 ft multiplied by 1.0 ft, what is the average thickness of the sheet in meters?
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