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Determine the amount of kJ that is needed to heat 45 grams of water that is at 25.0 °C and until it all boils away?
A diamond weighs 5.35 ounces. How much is it worth if the going price of diamonds is 627 dollars per carat? 1 carat is equal to 200 milligrams
a 5.00g sample of liquid water at 25.0degree c is heated by adding 84.0j of energy. the specific heat of water is
Dissolving NH4NO3 in water is an endothermic process. In fact, this reaction is often used in cold packs sold at the drug store. When 23.8 g of NH4NO3 was rapidly dissolved in 79.5 mL of water in a coffee cup calorimeter,
Combustion analysis of a 13.42 g sample of equilin which contains only carbon, hydrogen, and oxygen produced 39.61 g CO2 and 9.01 g H2O. The molar mass of equilin is 268.34 g/mol. Find the molecular formula for equilin.
A result of the common-ion effect is . A) that some ions, such as Na+ (aq), do not participate in solubility equilibria
Explain how much work is performed by 1 mole of water freezing to 1 mole of ice at 0 C at standard pressure? Density of ice at 0 C is 0.9168 g/mL Density of water at 0 C is 0.99984 g/mL
How many moles of Mg3N2 would be produced when 180.0 g of Mg reacts with 85.0 g of N2.
There are 96 grams in a molecule of (NH4)2CO3. Explain how many grams would there be if you had 5.4X10^24 molecules of this substance
A 100.0 mL sample of cold water at 21.3 C was added to a 75.0 mL sample of hot water at 55.1 C. Calculate the temperature of the warm water mixture.
The isomerization of methyl isocyanide, CH3NC CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199°C and 12.5 min at 230°C. Calculate the activation energy for this reaction.
Which of the following compounds has the greatest Coulomb force. Which has the smallest? Enter the name of the compound.
Describe in detail(ex:individual resins used, etc) the purification of a protein from bovine live that has the following characteristics: Molecular weight of 86,500, pI= 8 and precipitates out of solution at 30% ammonium sulfate
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