Depending on how much you eat and how healthy that chocolate is, you could lose a little weight, but it is not advides and you would most likely feel sick most of the time, while losing relatively no weight.
The answer is yes you can. The best thing you can remember while trying to lose weight is its not what you eat but how much of it you eat. Depriving yourself of the foods you love will do nothing but make you break your diet plans, instead try to eat what you like in small amounts.
Depends. Eating healthy is only half the answer. Weight loss is also about how much you eat. You won't lose any weight if you're eating healthy stuff, but too much of it. expect to lose about 1-3 lbs/week if you're eating right.
It is probably not safe to try and lose that much weight in so short a time. You can't gain it that fast, don't expect to lose it that fast. Eat sensibly and exercise. Ten pounds the first two weeks of a life style change is possible, but difficult.