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How is oxygen removed from zinc oxide?
1. Heating zinc oxide at approx. 2 000 0C this compound is thermally decomposed in oxygen and zinc. 2. Zinc oxide can be reduced with carbon to obtain zinc and oxygen: ZnO + C = Zn + CO
What is the valency of water?
Zero. The valence of hydrogen is plus 1, and the valence of oxygen is minus 2. Water is H2O, i.e. each molecule of it consists of two hydrogen atoms combined with one oxygen atom. Adding the valences of the components, we obtain zero as water's valence (charge).
Is oxygen 2 a metal or nonmetal?
Oxygen is a nonmetal.
What is the oxidation number of oxygen in MgCrO4?
-2 for Oxygen
What are three ways oxygen gas is removed from the atmosphere and use?
Animals respire. Plants respire. Fire uses oxygen. Rusting uses oxygen. Oxygen is removed from the atmosphere by 1. respiration 2. combustion and 3. gradual oxidation process at normal temperature and pressure. It is added to the atmosphere by photosynthesis of green plants.
Amphibians are not completely free to live on dry land because 1. their ancestors were fishes. 2. they obtain oxygen from water through gills. 4. their food organisms live in water. 5. they can escape?
They obtain oxygen from water through gills (during at least part of their life cycle).
What 2 ways do you use plants?
you can use them as decoration, for salads or for oxygen.
How do cnidarians obtain O2?
Cnidarians (Jellyfish and relatives) have a body made of non-living mesoglea (which doesn't need oxygen) surrounded by 2, 1-cell thick, layers of epithelium, which obtain oxygen directly from the water.
2 ways how living organisms grow?
Organisms grow larger by adding more cells.
2 ways bacteria is harmful to humans?
They can cause diseases. Another way is that they can invade organisms.
What are 2 ways that some organisms can escape from unfavorable environments?
they can move to another place or they can adapted
How microbes are classified based on their oxygen preferences?
On the basis of oxygen requirement microorganisms are classified asAerobes: organisms that use molecular oxygen as electron acceptor.Anaerobes: organisms that use some molecule other than molecular oxygen as electron acceptor.Facultative organisms : organisms that can use either molecular oxygen or some other chemical compound as electron acceptor.
What are 2 ways all animals are alike?
They all need to eat and breath oxygen.
How is oxygen removed from zinc oxide?
1. Heating zinc oxide at approx. 2 000 0C this compound is thermally decomposed in oxygen and zinc. 2. Zinc oxide can be reduced with carbon to obtain zinc and oxygen: ZnO + C = Zn + CO
How do terrestrial organisms lose water to the environment?
terrestrial organisms lose water by different ways:- 1) by excretion (in humans and animals) 2)by trans location (in plants)
How do you get dexoes in Pokemon?
If you want a Deoxy's in Pokemon theirs 2 ways to obtain it. 1. Go to a Pokemon Event that gives away free Pokemon or 2. Use an Action Replay/ GameShark to obtain it by hacking it into the game.
Two most important gases for living organisms?
oxygen and carbon dioxide are the 2 most important gases for living things
