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Katen [24]
3 years ago
13

The elements lithium and oxygen react explosively to from lithium oxide (Li2O). How much lithium oxide will form if 3.03 mol of

lithium react?
Answer in units of mol
Chemistry
1 answer:
lianna [129]3 years ago
7 0
The reaction equation:
2Li + O → Li₂O

Molar ratio of Li to Li₂O is:
2 : 1
So if 3.03 moles of Li are present:
2/1 = 3.03 / x
x = 1.515 moles of Li₂O will be produced.
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In the compound nh3, nitrogen has an oxidation number of 3+ and hydrogen has an oxidation number of -1
The molecule NH3 have a neutral charge so the number of oxidation number of it's component must be equal to zero. The molecule NH composed of 1 nitrogen and 3 hydrogens. If the nitrogen oxidation number is 3+, then hydrogen would be:

1* N + 3*H=0
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What is the oxidation state, d electron count, and coordination number respectively of the cobalt ion in [CoBr(NH3)4]PO4? What i
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Answer:

The correct option is: +4, 5, and 5

Explanation:

A coordination complex consists of a central metal atom or ion bonded to ligands by coordinate covalent bonds. The ligands and the central metal together form the coordination sphere.

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Central metal atom - Co

Coordination sphere consists of 1 Br⁻ and 4 NH₃ ligands

<em>Therefore, the coordination number= 5</em>

Let the oxidation state of Co = x

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<em>Oxidation state of Co = +4</em>

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Electron configuration of Co in +4 oxidation state: [Ar] 3d⁵ 4s⁰

<em>Therefore, the number of d electrons in cobalt ion = 5</em>

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