3 years ago

How many valence electrons do alkali metals have?

Chemistry

1 answer:

Lana71 [14]3 years ago

3 0

1 valence electron in alkali metals.

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Trava [24]

1) Chemical equation

Na2 SiO3 (s) + 8 HF (aq) ---> H2 Si F6 (aq) + 2 Na F (aq) + 3H2O (l)

It is balanced

2) Molar ratios

1 mol Na2 SiO3 : 8 mol HF.

3) Proportion

0.340 mol Na2 SiO3 * 8 mol HF / 1mol Na2SiO3 = 2.72 mol HF.

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What is the [OH-] of a substance that has a pH of 11?

Deffense [45]

Answer:

0.001 M OH-

Explanation:

[OH-] = 10^-pOH, so

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2 years ago

How many atoms of manganese are in 1.00 g?

andriy [413]

Answer:

$\frac{1.00g}{54.9g. {mol}^{ - 1} } = 0.0182\: mol\\ \\ 6.023 \times {10}^{23} \times 0.0182 \: mol \\ = 0.109\times {10}^{23} \: atoms$

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3 years ago

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vitfil [10]

Answer:

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3 years ago

How many distinct dichlorination products can result when isobutane is subjected to free radical chlorination?

Elenna [48]

Answer:

c. 3

Explanation:

Dicholorination of tertiary alkane ( i.e. isobutane) is a halogenation reaction which makes it possible to replace the alkyl functional group with halogenated chlorine.

When Isobutane is subjected to free radicals chlorination, three distinct dichlorination can be formed.

The mechanism of the formation of these products can be seen in the image attached below.

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3 years ago