True. That is how powerful the sun is. But it will explode in only about 5 billion years.
Answer: NO.
Explanation: Oxygen is not a compound. It has only one element in it.
Harder. Not compressible(unless using an extremely strong force). Non-metal have more of a chance of breaking than metals.
The reason as to why the substage condenser does not need to be included in computing the magnification and the only component needed is the ocular lens and the objective lenses is because the condenser is only responsible for gathering light and it does not contribute with the magnification of the object under the microscope.