The plane of the Moon's orbit around the Earth is tilted by 5° with respect to the plane of the Earth's orbit around the Sun, the ecliptic. This tilt prevents an eclipse from occurring at every new and full moon. In a lunar eclipse, the observer watches the Earth's shadow fall on the Moon.
This is a characteristic of a Thermosetting polymer.
Answer:
c
Explanation:
The law of conservation clearly states that energy can neither be created nor destroyed
Answer:
1 mol
Explanation:
2H2 + O2 ---> 2H2O
4g H2 (1 mol H2/ 2g H2)(1 mol O2/ 2 mol H2)= 1mol O2
1) An endothermic reaction is a reaction where heat is "absorbed" and the surrounding area is cooled. An example of an endothermic reaction is the classic baking soda and vinegar reaction. The mixture gets cold.
An exothermic reaction is one which gives off heat, such as burning, which is itself a chemical reaction.
2) (I don't actually know this one but i hope i helped with number one)
