Hich of the following properties of an unknown substance would allow it to be classified as a pure substance? The unknown substance –

is not able to conduct any electric current.

has an overall density greater than that of water.

consists of a solid dissolved in distilled water.

is composed throughout of one and only one element.

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

Which of the following are correct values for the ideal gas laws constant r