How many bugs will you collect in five minutes
Imagine you are driving at speed 60 mph through air filled with bugs at concentration 1 per cubic meter. The windshield is a flat panel of area 2 m^2, perpendicular to the ground. How many bugs will you collect in 5 min?
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Calcium carbonate, or limestone, is relatively insoluble in water. At 25?C, only 5.8 mg will dissolve in 1.0 liter of water. What volume of water is needed to dissolve 5.0 g of calcium carbonate?
A mixture of 80.0mL of hydrogen and 60.0mL of oxygen is ignited by a spark to form water. a) Does any gas remain un-reacted. Which one. b) What volume of which gas (if any) remains un-reacted
The acid dissociation constant for hypochlorous acid (HClO) is 3.0x10-8. Calculate the concentrations of H3O+, ClO- and HClO at equilibrium if the initial concentration of the acid is 0.05 M. What is the pH? I made an ice table and found x to be 3
Calculate the of the solution that results from each of the following mixtures: Part A - 55.0 mL of 0.15 M HCHO2 with 70.0 mL of 0.13 M NaCHO2
List a balanced chemical equation for each of these chemical reaction types and explain how it is used in your example above.
A certain weak base has a Kb of 7.30 × 10-7. What concentration of this base will produce a pH of 10.07
A unit of heat energy that was formerly used frequently calorie. Look up the definition of calorie in your textbook or a handbook and record it here.
Consider the reaction: Cu^2+(aq) + 4NH3 (aq) -> Cu(NH3)4^2+(aq) Kf=2.1 x 10^13 If Ksp for Cu(OH)2 is 2.2 x 10^-20, what is the value of the equilibrium constant, K, for the reaction below? Cu(NH3)4^2+(aq) + 2OH -> Cu(OH)2(s) + 4NH3(aq)
The reaction is spontaneous in the forward direction. B. If Q = 1, then DGrxn = G°rxn. C. If G°rxn = 0, the reaction is spontaneous in the reverse direction. D. If G°rxn > 0, the reaction is spontaneous in the reverse direction. E.
What quantity of energy is required to break up exactly 6 mol of SO2(g) into its constituent elements?
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