a substance that consists of one type of matter and always has the same composition and properties is called ?

The substance that consists of one type of matter and always has the same composition and properties is called a pure substance.

What is the area of a rectangle that is 3.1 cm wide and 4.4cm long

To find the area of a rectangle, you multiply its length by its width.

Area = length x width

Given that the width is 3.1 cm and the length is 4.4 cm, we can calculate the area:

Area = 3.1 cm x 4.4 cm
= 13.64 cm²

Therefore, the area of the rectangle is 13.64 cm².

A substance that consists of one type of matter and always has the same composition and properties is called a pure substance.