Must show work to get full credit. [45] A solution has a hydronium-ion concentra

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Must show work to get full credit.

[45] A solution has a hydronium-ion concentration of 1.0 x 10-5 mol per liter. What is the pH of this solution? Is this solution acidic or basic? What is the hydroxide-ion concentration of this solution?

[46] Balance the following chemical equations. (a) Ni + O2 ? Ni2O3
(b)F2+HBr?Br2 +HF

[47] A 1100 kg car is moving at a speed of 40.0 m/s.
(a) What is kinetic energy of the car?
(b) How much work is required to bring the car to rest?
(c) Determine the stopping distance if the brakes supply a force of 4400 newtons.



[48] The specific heat of aluminum is 0.215 calories per gram per degree Celsius. Calculate the amount of heat required to raise the temperature of 2.00 kg of aluminum by 10.0 degrees.

Explanation / Answer

45) PH=-log(1x10^-5)=5 acidic pOH=14-5=9=-lg(oH) [oH]=1x10^-9

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