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A. A balloon is floating around outside your window. The temperature outside is -3 degrees C , and the air pressure is 0.700atm . Your neighbor, who released the balloon, tells you that he filled it with 3.20moles of gas. What is the volume of gas inside this balloon? Express your answer numerically in liters. B. A 18.0L gas cylinder is filled with 5.60moles of gas. The tank is stored at 3 degrees C . What is the pressure in the tank? Express the pressure numerically in atmospheres. C. A 140L kiln is used for vitrifying ceramics. It is currently operating at 865 degrees C , and the pressure is 1.000atm . How many moles of air molecules are within the confines of the kiln? Express your answer numerically in moles. D. A 10.0L gas cylinder has been filled with 4.20moles of gas. You measure the pressure to be 3.00atm . What is the temperature inside the tank? Express your answer numerically in degrees Celsius
A 17.6 g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0° C in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the is 31.1°C, what is the specific heat capacity of the alloy
a student reported the follow ing percentages for his unknown mixture 25nh4cl 30 nacl and 50 sio2. assuming that the
A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid?
Iron has a reported average atomic mass of 55.85 amu. If iron has two isotopes, one of which has 29 neutrons and an isotopic abundance of 57.50%, what is the mass of the other isotope?
What is the molarity of a permanganate solution if it takes 10.0 mL of 0.200M iron(II) solution to completely react with 15.7 mL of the permanganate solution
a 20 year old male was brought to paramedics after ingesting 100mL of pure ethylene glycol which is a lethal dose. The hospital pharmacy is out of ehtanol so they use a bottle of 100-proof whiskey in your medical bag.
determine the specific heat capacity of a metal that has a mas of 14 grams. as the metal cools from 400 degrees celcius
If the same volume of the buffer was 0.330 M in HF and 0.330 M in NaF, what mass of NaOH could be handled before the pH rises above 4.00?
A sample of gas (24.2 g) initially at 4.00 bar was compressed from 8.00 L to 2.00 L at constant temperature. After the compression, the gas pressure was ________ bar.
a compound is constituted by mass of 22.6 phosphorus the rest being chlorine. given that a volume of 307 ml of the gas
Consider the reaction HgS + O2 → SO2 + Hg. If 200.0 grams of HgS reacted with 150.0 grams of O2, what is the limiting reagent.
Calculate the de Broglie wavelength for each of the following. a) a proton with a velocity 95% of the speed of light. b) a 160 g ball with a velocity of 10. m/s
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