Which property of a substance is not affected by physical changes?

A) reactivity

B) size

C) shape

D) position

2. What is the concentration of an acid that has 5.2 moles of HCI in 750 mL of water? w O A. 6.9 M OB. 6.8 M OC. 7.5 M OD. 5.2 M

Consider the reaction. PCl 5 (g) - ⇀ ↽ - PCl 3 (g) + Cl 2 (g) K c = 0.0420 The concentrations of the products at equilibrium are [ PCl 3 ] = 0.170 M and [ Cl 2 ] = 0.280 M. What is the concentration of the reactant, PCl 5, at equilibrium?

Which of the following is not a state of matter? A. solid B. liquid C. water D. plasma

Which process could cause a material to change state from gas to liquid?

What is one element a topographic map shows? A: Climate B: Landforms C: Space D: Weather

What is a group of specialized cells called when they work together to perform a specific function?

What is the overall chemical equation for smog after the above intermediate reactions are combined?

Are iron filings a pure substance?

The positively charged particle of an atom is called a (n)

What is the volume in ml of one pound of mercury?