URGANT a. What might be the two new substances in this reaction?

b. Finish the reaction below with correct chemical formulas: Hint: 3 total molecules are formed in the product

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

If the new moon happens on january 15th, what shape will it be on february 6th?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?