What are five signs of chemical change

For questions 22 - 24, write an equation for the reaction of hydrogen chloride and sodium sulfide to produce hydrogen sulfide with sodium chloride. 22. Show the formulas of the reactants. 23. Show the formulas of the products. 24.

Which is the function for enzymes released onto decaying matter by decomposers? A. to put together elements and small molecules B. to separate large molecules from small molecules C. to break down large molecules into elements and small molecules D.

A fuel is purified by passing it through a clay pipe. Each foot of the clay pipe removes a fixed percentage of impurities in the fuel.

Calculate the ph of a 0.10 m solution of hypochlorous acid

Enter the molecular equation representing aqueous nitric acid and aqueous ammonia reacting. express your answer as a balanced molecular equation. identify all of the phases in your answer.

Determine the number of moles 1) 20g Na and 2) 34g H2O

Nitrogen dioxide (NO2) gas and liquid water (H2O) react to form aqueous nitric acid (HNO3) and nitrogen monoxide (NO) gas. Suppose you have 5.0 mol of NO2 and 11.0 mol of H2O in a reactor. Suppose as much as possible of the NO2 reacts.

How long does it take the Earth to rotation and revive

What is Charles' law formula?

Which stars have the highest absolute brightness? Select one: a. Supergiants b. Giants c. Yellow stars d. Dwarfs