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Kazeer [188]
3 years ago
11

A water molecule is held together by ___ covalent bonds,

Chemistry
1 answer:
Margarita [4]3 years ago
3 0

2 covalent bonds

2 pairs or 4 electrons

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If 4.55 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding,
Rina8888 [55]

Answer:

4.55 mol of C₂H₂

Explanation:

Let's verify the reaction:

CaC₂   +    2H₂O   →   C₂H₂   +  Ca(OH)₂

Ratio is 1:1, so 1 mol of calcium carbide will produce 1 mol of acetylene.

4.55 mol of CaC₂ will make the same amount of C₂H₂

3 0
4 years ago
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The oxidation numbers of nitrogen in NH4+, NO2, and NaNO3 are, respectively:
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Hydrogen has a +1charge and the whole thing has a +1charge so
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Which of the following will dissolve the fastest
dimulka [17.4K]

Answer:

<em>Saturated.</em>

Explanation:

<u>This explains the solute dissolving faster. It links with the definition of soaked with moisture; drenched. </u>

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I might be wrong but I’d say bond polar
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First, we have the ionic elements. This type of elements involved completely transferring of one ion to another in order to form a bond. There is also the type which forms the covalent bond which involves only sharing of the electrons. Those that exhibits the polar bonds and also the hydrogen bonding. 
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