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A 250-L tank is evacuated and connected to a 50.0-L bulb filled with compressed argon. After they are joined, the pressure in the bulb falls to 2.20 atm. If the temperature remains at 25 °C throughout the process, what was the initial pressure in the 50.0-L bulb?
depict the hydrogen bonding three water molecules in a
Is heat absorbed or evolved in the course of this reaction? Calculate the amount of heat transferred when 45.0 g of CH3OH (g) is decomposed by this reaction at constant pressure.
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction
The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (C3H8) to burn it completely.
How many molecular orbitals are present in the valence band of a sodium crystal with a mass of 5.90g?
Write equations for (a) the hydrolysis of TiCl4 and (b) the neutralization of Ba(OH)2
how many of joules of heat are needed to raise the temperature of 10.0g of aluminum from 22 degrees c if the specific
A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. There is an increase in temperature of 56 K. Calculate the heat lost or gained by the system in response to this change in the external temperature.
calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees celsius to steam at 125
the ratio of carbon to hydrogen to nitrogen in nicotine is 5 to 7 to 1. what is the molecular formula of nicotine if
Calculate the volume of 1M solution of HCl needed for 1 unit shift of the pH of thhe following solutions:
A green leaf has surface area 2.20 cm^2. If solar radiation is 1190 W/(m^2) , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
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