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Which has more kinetic energy: a 0.0020-kg bullet traveling at 400 m/s or a 6.4 x 107 -kg ocean liner traveling at 10 m/s (20 knots)? Justify your answer. How much work is required to lift a 3.00-kg object from the bottom of a well 10.0 m deep?
Nitrogen is fixed in ecosystems in ways declared below. State which one of the statements below is false
Explain what is the height of a column of liquid in a barometer if the density of the liquid is 1.076 g/mL as well as the local atmospheric pressure is 0.87 bar
How are the neutral particles removed from the Mass Spectrometer. What is the reason for removing neutral particles from the Mass Spectrometer
Oxygen can be produced in the laboratory by the thermal decomposition of potassium chlorate: KClO3 (s) ? KCl (s) + 3/2 O2 (g) Some potassium chlorate is decomposed and the oxygen produced is collected over water at 25°C and 780 torr total pressure
What is the total anion concentration (in mEq/L) of a solution that contains 6.0 mEq/L Na+, 13.0 mEq/L Ca+
A 1.000-g sample of stannous fluoride gives a 1.175-g precipitate of stannous phosphate. Compute the theoretical yield and percent yield of Sn3(PO4)2
In an experiment conducted last Tuesday, the time it takes for a certain reaction to proceed seems to be related to the initial concentration of one of the reactants A.
An important step in the synthesis of nitric acid is the conversion of ammonia to nitric oxide. H° f [NH3(g)] = -45.9 kJ/mol; H° f [NO(g)] = 90.3 kJ/mol; H°f[H2O(g)] = -241.8 kJ/mol
Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
How would you go about finding how many mL of 2.00 molar NaOH (Aqueous) solution are required to neutralize 1.858 g of KHC8H4O4 (it's formula weight being 204.22)? Any other example would do
Give the enthalpies of the reaction P4 (s) + 3O2(g)-->P4O6(s) Delta H= -1640.1 kJ. P4 (s) + 5O2 (g)--->P4O10 (s) Delta H= -2940.1 kJ Calculate the enthalpy change for reaction: P4O6(s) + 2O2 (g)--->P4O10(s)
What is the molar weight of the compound. Note: the freezing point depression constant of water is 1.86 oC/m
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