What are the four signs of a chemical reaction

Carla is reading an article about a certain species of bacteria that can grow on the leaves of house plants. The article explains that the bacteria are heterotrophic. A. The bacteria are probably eubacteria because they live on common plant leaves B.

At 25 °c, only 0.0100 mol of the generic salt ab2 is soluble in 1.00 l of water. what is the ksp of the salt at 25 °c? ab2 (s) ↽--⇀a2 + (aq) + 2b - (aq)

The pk1, pk2, and pkr for the amino acid glutamate are 2.1, 9.5, and 4.1, respectively. at ph 11.0, glutamate would be charged predominantly as follows:

How did aristotles inability to detect parallax lead him to propose a geocentric model of the solar system

A mixture contains only sodium chloride and potassium chloride. a 0.1586-g sample of the mixture was dissolved in water. it took 22.90 ml of 0.1000 m agno3 to completely precipitate all the chloride present.

How do the himalayan mountains affect the people of india

Convertible bonds are examples of: a. Securities that have characteristics of both debt and equity b. Non-recurring items c. Assets d. Treasury stock

At what temperature would the volume of a gas be 0.550 L if it had a volume of 0.432 L at - 20.0 o C?

A sample of a compound contains 9.11 g Ni and 5.89 g F. What is the empirical formula of this compound? A.) NiF B.) Ni3F2 C.) NiF2

Combining aqueous solutions of bai2 and na2so4 affords a precipitate of baso4. Which ions are spectator ions in the reaction?