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How many joules of energy are needed to melt 54 grams of ice at its melting point? Assume that the molar heat of fusion of ice is 6 kJ/mol.
what mass of CH3CO2H is required to prepare 100.00ml of a 0.48M acetic acid solution?
The below table lists pressure and volume measurements for air in a cylindrical piston of an air compressor. The variables may be assumed related by: PV^k=C
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
Balancing equation to calculate correct number of moles If CaC2 + 2 H2O --> C2H2 + Ca(OH)2 then, there are 65 grams of calcium carbide
If 155mL of wet {grm{H}}_2 is collected over water at 24 ^circ {rm C} and a barometric pressure of 739torr , how many grams of {grm Zn} have been consumed.
Determine how many moles of Trisodium phosphate would be required to react with 4.0mol of Silver Nitrate?
How much heat in kilojoules is evolved in converting 2.00 mol of steam at 150 to ice at -35.0? The heat capacity of steam is 1.84 and that of ice is 2.09 .
A solid block of exactky 100.0 cm 3 has a mass of 153.6g. Determine its density. Will the block sink or float on water?
Evaluate the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
A 15.0 grams lead ball at 25.0 celcius ws heated with 40.5 Joules of heat. Given the specifc heat of lead is 0.128 J/ grams. celsius, what is the final temperature of the lead?
Phosphorus, P, is combined with flourine F2, to give a gaseous compound with the formula PFx. If you start with 2.982 grams of P and isolate 12.129 grams of PFx, what is the value of x?
Calculate the empirical formula for a chemical compound which gives the following analysis: 12.6 percent lithium, 29.2 percent sulfur, and 58.2 percent oxygen.
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