Answer:
The two most important climatic factors for ecosystems are sunlight and water. Sunlight is necessary for plants to grow, and to provide energy to warm the earth's atmosphere. Light intensity controls plant growth. ... All living organisms require some amount of water.
Metals like sodium, potassium, magnesium, etc. are extracted by electrolysis of their chlorides in molten state.
These metals are not extracted by reduction of their oxides with carbon because:
Carbon has less affinity for oxygen than these metals
Carbon is a weaker reducing agent than these metals
These metals easily form oxides with oxygen, their oxides are very stable. Affinity to the oxygen is one the greatest of all elements.
Reducing agent is element or compound who loose electrons in chemical reaction. Sodium, potassium, calcium and magnesium are very strong reducing agents because they easily loose one or two valence electrons.
Electrolysis is a chemical methode that uses electric currents for chemical reactions.
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0.2mL of the morphine
Explanation:
Given:
Quantity of morphine = 2.0mg
A vial contain = 10mg per 1 cm³
Unknown:
volume of morphine to administer in mL = ?
Solution:
To solve this problem, let us carefully analyzed it:
A vial of morphine = 10mg per 1 cm³
In 1 cm³ of morphine vial we have 10mg of the sample
Note that 1cm³ = 1mL
we can rightly conclude that;
1cm³ of the vial = 1mL of morphine in the vial = 10mg
since:
10mg of morphine is in 1mL of the vial;
2mg of morphine would be contained in = 0.2mL of the vial
Therefore, 0.2mL of the morphine should be administered.
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I would go with the cell membrane In this case as the cell membrane is like skin
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