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calculate the specific heat of a substance if a 35 gram sample absorbs 28 joules as the tempature is raised from 292 kelvin to 313 kelvin.
Methane gas (CH4) comprises 7 x 10-5 % by mass of the Earth's atmosphere. What is the residence time of the gas in the atmosphere if it is being lost to the methane sinks at the rate of 4 x 1011 kg yr-1.
If the average human body discharges 925.0g CO2 per day, how many moles of NaOHare needed each day for each person in the spacecraft?( 42.04 mol NaOH)
A 787 mL gas sample at STP is compressed to a volume of 226 mL, and the temperature is increased to 29?C. What is the new pressure of the gas in Pa.
A 335 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 628 mmHg. Calculate the moles of Ar present.
what is the purpose of anhydrous CaCl2? why is it important yhat none of the solid CaCl2 be included in the final distillation of 1- bromobutne.
Description of Chemistry - Other, What is meant by Molality of a solution and Solute particles? Define. How many solute particles are there in 1m solution containing these substances in one kg of water?
Compute ΔHo fusion and ΔSo fusion for this substance If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K..
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 7.2 104 kg of coal that is 0.33 mass % sulfur?
Silver chloride, often used in silver plating, contains 75.27% .Calculate the mass of silver chloride in grams required to make 4.4 of silver plating.
A solution is made by adding 50.0 mL of ethanol (C2H5OH, d = 0.789 g/mL) to 50.0 mL of water (d = 0.998g/mL). What is the total vapor pressure over the solution
A block of metal has a width of 3.2 rm cm, a length of 17.1 rm cm, and height of 4.5 cm. Its mass is 1.5 kg. Calculate the density of the metal.
A 250.0 mL sample of chlorine gas is collected when the barometric pressure is 798 mmHg. What is the volume of the sample after the barometric pressure dropped to 745 mmHg?
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