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calculate the energy in joules and calories. required to heat 5.25g of water, from 55 C to 64.8 C
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
A 12.0g sample of a gas has a volume of 5.25L at 29 degrees celcius and 764mmhg . If 2.7g of the same gas is added to this constant 5.25L volume and the temperature raised to 67 degrees celcius.
The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.
A 125 mL sample of dry air at 230 degrees celcius is cooled to 100 degrees celsius at constant pressure. What volume will the dry air occupy at 100 degrees celsius.
There are very few compounds that contain an element from the noble gas family (elements in column 18, rightmost column). Explain why there are so few noble gas compounds in nature.
Propane gas (C3H8) is used as a fuel in rural areas. How many liters of C02are formed at STP by the complete combustion of the propane in a container with a volume of 15.0 L
A gaseous mixture of Oxygen(O2 )and Nitrogen(N2 )contains 40.8 grams N2(nitrogen) by mass then determine what is the partial pressure of O2(oxygen) in the mixture if the total pressure is given= 345 mmHg.
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
Find ratio of the atomic mass of Silicon to Hydrogen if every 100g of SiH4 contains 87.45g of Si and 12.55g of H.
Calculating Pressures using different laws, Converting between Units of Pressure, Part A, Convert 0.700atm of pressure to its equivalent in millimeters of mercury.
The vapor pressure of pure methanol, CH3OH, at 30 C is 160. torr. How many grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 131. g of methanol to obtain a solution with a vapor pressure of 133. torr.
A first-stage recovery of magnesium from seawater is precipitation of Mg(OH)2 with CaO: Mg2+(aq)+CaO(s)+H2O(l)---->Mg(OH)2(s)+Ca2+(aq).
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