Answer:
1. telescope
2.

f- focal length
f- focal length r- the radius of curvature of the mirror

p-the distance of the object from the vertex of the mirror
l-the distance of the figure from the vertex of the mirror
There are approximately 3 different types of atoms that are present in one molecule of aluminum hydroxide, AI(OH)3.
Answer:
gfdvcfffddfgffffdrddgfddddghtscgvfrggxfhxdg