Question 20 (1 point) In the lab, a student prepared a solution of ammonium chloride in water. The student
placed 9.5 g NH4Cl in a beaker and added 35.0 g of H20. The initial temperature of
the water was 27°C. The student stirred the mixture, and the final temperature of
the solution was 16°C.
12
which is called
In this solution, the substance that is being dissolved is
the
15
O H20; solvent
18
O NH4Cl; solute
NH4Cl; solvent
H20; solute

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

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Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer