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How much energy would be required to melt 48 g of HCl at its melting point of -110.8C? Hfus for HCl is 14.2 cal/g and Hvap for HCl is 98.7 cal/g.
In the early days of the periodic table, the 1870s, both silicon and tin were known elements, but germanium was unknown. Using these trends and the densities of silicon and tin that you just obtained, estimate the density of germanium?
Ten grams of hamburger were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth of a mL of this slurry was added to 9.9 mL of sterile buffer.
What is the volume of a gas at T=35.0C and P=675 torr if the same sample occupied 42.6L at T=-27.3C and P=1.000 atm.
A student analyzed and recorded two potassium emission spectra: 1) one using 0.10 M Potassium sulfate solution; 2) one using 0.10M Potassium nitrate solution;. Determine why will significant differences be observed in the two emission spectra.
Determine the temperature change is caused by heat energy and using a beaker that contains 100 mL of H 2 O thermally insulated from its surroundings, one mol of solid CaCl 2 is mixed and solution is stirred
Nitromethane has a relatively high boiling point of around 100 c. Which of the following intermolecular force is not present in pure liquid nitromethane and why.
Calculate the binding energy E B of the helium nucleus 4 /2 He .Express your answer in millions of electron volts to four significant figures.
Quantum number representations - What are the possible values of the four quantum numbers for one electron in a 5d orbital?
A 5.00 g sample of KBr at 25.0°C dissolves in 25.0 mL of water also at 25.0°C. The final equilibrium temperature of the resulting solution is 18.1°C.
Explain the steriochemisty of gyceraldehyde and glycerol, give reasons for absence of anomeric forms in sucrose
How many atoms of neon occupy a volume of 14.3 L at STP.
A 1.6 g sample of a molecular compound is dissolved in 104 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51degreesC, the normal boiling point of CCl4 is 61.2degreesC. The boiling point constant for ..
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