1. what is hard water.
2. Mention four sources of water.
3. write down the chemical formula o...
Chemistry, 19.08.2021 23:30, multezemaleme
1. what is hard water.
2. Mention four sources of water.
3. write down the chemical formula of water.
4. What is purification of water.
5. Mention two importance of purification of water.
6. Mention 4 method used ot purify water. 7. Mention 4 impurities found in water.
8. Explain the term contaminated of water.
9. State two physical properties of water. 10. mention the names of of the elements that causes hardness in water.
Answers: 1
Chemistry, 22.06.2019 04:40, khan2491
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)
Answers: 2
Chemistry, 22.06.2019 12:30, poopybutt541
Avariable that is not being directly tested during an experiment should be
Answers: 1
Mathematics, 26.08.2019 08:50
Mathematics, 26.08.2019 08:50
Mathematics, 26.08.2019 08:50
Mathematics, 26.08.2019 08:50