Identify four properties of a substance that will never change

A man was robbed in an alley outside a busy restaurant. He was assaulted with a baseball bat that was left at the scene. There were bloody footprints leading away from him. He was treated by paramedics and taken to a hospital.

Two samples of carbon tetrachloride were decomposed into their constituent elements. One sample produced 38.9 g of carbon and 451 g of chlorine, and the other sample produced 14.8 g of carbon and 135 g of chlorine.

What volume of concentrated hcl (12.1m) is necessary to make a 0.250m hcl solution in a 5l volume?

What is the 3 parts of the mole ratio step?

What is the molarity of a solution of 14.0 g NH4Br in enough H20 to make 150 mL of solution?

2 human activities that contribute to runoff into water systems

Which of the following is an example of geographic isolation? A. a population of salmon dies out because they cannot find food. B. a zebra with a long mane moves into a population of zebras with short manes. C.

What are moles in chemistry?

How did John dalton describe atoms?

Which of the following statements describes a physical property? The substance has a higher density than water. A. The substance forms a solid when reacted with silver nitrate. B. The substance is highly reactive. C.