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An object weighing 335 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. Immersed in oil, the object weighs 285 N. (a) Find the density of the object.
For the following battery: Cd(s) | CdCl2(aq) || Cl-(aq) | Cl2(l) | C(s) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) From which electrode will electrons flow from the batter..
calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees
After 63.0 min, 24.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
calculate the final concentration of a sodium hydroxide solution prepared by adding 10.00ml of 5.325m sodium hydroxide
A copper wire (density = 8.96 g/cm3) has a diameter of 0.44 mm. If a sample of this copper wire has a mass of 50. g, how long is the wire?
Given a free energy change for a reaction of -0.125 kcal/mol, what is the equilibrium constant at 18 degrees C (r=8.314 J/mol*K)
A buffer is made by dissolving 0.037 mol of potassium fluoride in 135 mL of 0.0237M hydrofluoric acid. Assume no volume change when the salt is dissolved. Calculate ph of the buffer.
How would you synthesize Acetophenone starting from an Alkene? Identify and draw the structure of the starting compound
explain methods of industrial preparation of
Explain a resting nerve cell membrane, sodium-potassium pump, action potential and what wil happen if sodium channels were blocked
when a 5.00 g sample of naoh dissolves in 100.0 g of water in a coffee cup calorimeter the temperature rises from 28.3
a gas is confined to a cylinder under constant atmospheric pressure. when 415 j of heat is added to the gas it expands
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