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kolezko [41]
3 years ago
12

Why are atoms of lithium, sodium, and potassium almost neverfound alone in nature

Chemistry
2 answers:
yuradex [85]3 years ago
6 0
<span> The Alkali elements are so reactive that they are </span><span>never found alone in nature</span>
Crazy boy [7]3 years ago
4 0
These three metals- called the alkali metals- have one electron in their outer shell. Since all atoms want to be stable, it try's to lose this electron. They are very reactive, and so will be found in compounds or mixtures, such as sodium chloride (table salt!)

Hope this helps:)
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How is the mass of 1 mole of an element determined? O A. It is equal to the atomic mass times Avogadro's number. O B. It is the
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Answer:

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2 years ago
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soldier1979 [14.2K]
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3 years ago
Read 2 more answers
Given the chemical equation: 2 Pb + O2 → 2 PbO, if 51.8 grams of Pb are formed in this reaction, then 8.00 grams of O2 must have
Nutka1998 [239]

Answer:

If 51.8 of Pb is reacting, it will require 4.00 g of O2

If 51.8 g of PbO is formed, it will require 3.47 g of O2.

Explanation:

Equation of the reaction:

2 Pb + O2 → 2 PbO

From the equation of reaction, 2 moles of lead metal, Pb, reacts with 1 mole of oxygen gas, O2, to produce 2 moles of lead (ii) oxide, PbO

Molar mass of Pb = 207 g

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Molar mass of PbO = 207 + 32 = 239 g

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= 414 g of Pb reacts with 32 g of O2 to produce 478 g of PbO

Therefore, formation of 51.8 g of PbO will require (32/478) × 51.8 of O2 = 3.47 g of O2.

If 51.8 of Pb is reacting, it will require (32/414) × 51.8 g of O2 = 4.00 g of O2

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. A large quantity of very dilute aqueous HCl solution is neutralized by the addition of the stoichiometric amount of a 10-mol-%
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Answer:

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Explanation:

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