Explore BrainMass

Energy Conservation

1. If the lower layer of the liquid in the graduated cylinder is salt water, and the top half water, what conclusions can you make with respect to the density of the egg. Foe example, is the egg denser than salt water? than pure water? Why?

2. A 325gram piece of gold at 425C is dropped into 200ml of water at 22.0C. The specific heat of gold is 0.031 cal/g-C. What is the final temperature of the mixture. (Assume no heat losses to the surroundings and take care to use the proper signs, + or - ).

Solution Preview

1. The density of the egg will be less than that of the salt water and higher than that of pure water. This is the reality in nature because salt water has a much higher density than pure water so the egg can float in ...

Solution Summary

The solution provides detailed explanations and calculations for these two energy conservation problems.