<u>Answer:</u> The density of sugar is 
<u>Explanation:</u>
To calculate the density of a substance, we use the equation:

We are given:
Mass of sugar = 316 g
Volume of box = 
Putting values in above equation, we get:

Hence, the density of sugar is 
Silver is not a compound. It's a mixture
Answer:mirror
Explanations: A lens is a piece of a glass or other transparent substance with curved sides for concentrating , dispersing light rays used singly as in magnifying glass or with lenses therefore mirror doesn’t have lenses but telescope microscope and eyeglasses have
He supposed that the elements were ultimately composed of various<span> particles.</span>