4. Diarrhea and cholera are gastrointestinal diseases caused by A. dirty water B. distilled water C. mineral water D. purified water
5. A skin disease caused by air pollutant is called
A. Asthma
B. Bronchitis
C. Diarrhea
D. Scabies​

2. how is heavy water different from normal water

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.