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Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth's oceans, because of their high heat capacity, can absorb heat and therefore act to slow down global warming. How much heat would be required to warm Earth's oceans by 1.0 °C? Assume that the volume of Earth's oceans is 137 × 107 km3 and that the density of seawater is 1.03 g/cm3. Also assume that the heat capacity of seawater is the same as that of water.
Calculate the amount of heat [kcal] released when 50.0 g of steam at 100 °C hits the skin, condenses, and cools to a body temperature of 37 °C.
Under certain condition for the reaction A ? B, ?H = 14.2 kJ and ?S = 27 J/K. At what temperature in K is the reaction at equilibrium?
A copper refinery produces a copper ingot weighing 131 lb. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can be obtained from the ingot?
In a 0.34 M solution of sodium acetate, what concentration of hydronium ions comes from the self-ionization of water? pKb for acetate anion is 9.246
The specific rate constant at 293 K is found to be 2.35 x 10^-4 s^-1 and at 303 K the specific rate constant is found to be 9.15 x 10^-4 s^-1. Calculate the frequency factor for the reaction at 303 K.
This phenomenon has some very practical applications in the power plants, particularly nuclear power plants. How does this help the overall efficiency of a nuclear power plant?
Epsom Salts is a hydrate, which means that a certain number of water molecules are included in the solid structure. The formula for epsom salt can be written as MgSO4* X H2O
A solution is prepared by dissolving 12.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.50 mL sample of this stock solution is added to 55.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
similarly, what happens if cellulose is reacted with maleic anhydride C4H2O3? Again, how is the cellulose molecule/structure altered and what are the reaction by-products?
What volume (in milliliters) of 0.240 M NaOH should be added to a 0.125 L solution of 0.029 M glycine hydrochloride
What is the empirical formula for an prganic compound whose percentage composition is 40.0% carbon
Mercury-205 has how many protons, neutrons, electrons, and electrons in the 1st quantum shell and in the compound BCl3 which is the more electronegative element?
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