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Problem- What is the heat absorbed if 2.118g of sodium chloride is dissolved in water? NaCl + H2O + 3.88kj ----> Na+ + Cl-
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We want to supply 1 inch of water to an acre garden. Our water pump can supply water at a rate of 40 gallons/mins. How long will it take to supply on inch of water to the garden.
25.0 ml of a 0.2450 M NH4Cl solution is added to 55.5ml of 0.1655 M FeCl3. What is H concentration of chloride ion in the final solution.
What volume of 2.0 M NaClO must be diluted with water to prepare 500.0 mL of 0.10 M NaClO?
using a solution having pb2 ions 1x10-2 m that is mixed to a solution of i- ions of 2 x 10-4m. show whether or not a
The atomic radius of O is smaller than the atomic radius of Se. What is the effective nuclear charge for the valence electron(s) in O and Se
10.0ml of 0.10M Pb(NO3)2 is mixed with 10.0ml NaCl. After equilibrium is attained, it is determined that the concentration of Cl- in solution is 0.0218M. Calculate the Ksp of PbCl2.
A ground state H atom absorbs a photon of wavelength 91.72 nm. Explain what higher energy level did the electron reach
A 25.00 mL portion of 0.100M Ag+ is added to a solution containing 0.0010 mole of Cl-. This solution is then titrated with 0.0500M SCN- to the end point. Calculate the volume of SCN- is required for the titration.
Write the balanced net ionic equation for the reaction that occur in the following case. and identify the spectator ion(s) in this reaction Cr2(SO4)3(aq)+(NH4)2CO3(aq)
It is often useful to be able to anticipate, without doing a detailed calulation, whether an increase in temperature will result in a raising or a lowering of a reaction enthalpy. The constant-pressure molar heat capacity of a gas of linear molecu..
If 2- propanol(isopropyl alcohol) had been used in this experiment (the oxidation of 1- propanol to propanal) instead of 1- propanol, what would be the product have been. Would the % yield have been better or worse.
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.
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