Answer:
Iron
Explanation:
The main role of iron in your body is to help your red blood cells function normally.
Answer:
o increase the rate of chemical reaction
Explanation:
Enzymes are chemical catalysts that speed up chemical reactions by lowering their activation energy. Enzymes have an active site with a unique chemical environment that fits particular chemical reactants for that enzyme, called substrates. Enzymes and substrates are thought to bind according to an induced-fit model.
Answer:
a), b), c) & f)
Explanation:
d) does not apply because Ms value can be either +½ or -½
e) does not apply because Ml - values range from -l to +l, hence l= 2 doesn't exist when l= 1
Answer:
- <em>Alkali metals react with water to produce </em><u>hydroxide and hydrogen gas</u><u>.</u>
Explanation:
That is a chemical property of <em>alkali metals</em>: they are highly reactive and <em>react </em>vigorously <em>with water</em> to produce the correspondant hydroxide and hydrogen gas.
These are some of those reactions:
- 2Li (s) + 2H₂O (l) → 2LiOH (aq) + H₂(g) ↑
- 2Na (s) + 2H₂O (l) → 2NaOH (aq) + H₂(g) ↑
- 2K (s) + 2H₂O (l) → 2KOH (aq) + H₂(g) ↑
The alkali metals are the elements of group 1 of the periodic table: Li, Na, K, Rb, Cs, and Fr. They have one valence electron which may lose easily to form an ion with charge +1.
