Which test result indicated a chemical change has taken place?

Write the concentration equilibrium constant expression for this reaction. Cu (s) + 2Ag + (ag) - > Cu2 + (aq) + 2Ag (s)

What is the mass in grams of 390 mL

An object has a mass of 180 kg and a volume of 90 m3. what is its density?

To what does the term 'drying a liquid' refer? a. Removing all traces of water to form a solid. b. The technique of removing all traces of an organic solvent from water. c. Removing all traces of water from an organic solvent. d.

In a chemical, reaction react to form products. Accounding to the law of conservation of matter, if the total mass of the reactants is 10.0 grams, what will the total mass of the products be? how do we know?

How many atoms of gold (Au) are present in a sample of 2.5 mol Au? A. 1.5 * 1024 atoms Au B. 1.5 * 1023 atoms Au C. 4.2 * 1024 atoms Au D. 4.2 * 1023 atoms Au

what might cause the goldfish population to drop if the temperature moves out of its normal range? Name three things

Why must a chemistry experiments performed in a well ventilated room?

What kind of chemical bond does salt have?

How does phosphorus enter the human body?