3 years ago

I'm lost....can anyone explain please?

1 answer:

3 0

I'll do A for you. They are all double displacement reactions. So recall: AB+CD--> CB+AD . Also, knowing the charges will help and make this so easy.

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If an acid or alkali is diluted by a factor of 10, what effect will this have on its pH?

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3 years ago

Draw the Lewis structure, including unshared pairs, of the following molecules. Carbon has four bonds in the compound.

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Refer to attachment.

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3 years ago

Methane burns in oxygen to produce carbon dioxide and water. Which of the tollowing represents a preliminary, unbalanced equatio

WITCHER [35]

So first we need to know what the formulas are:

Methane: $CH_{4}$

Oxygen: $O_{2}$

Carbon Dioxide: $CO_{2}$

Water: $H_{2}O$

So then we follow the equation as specified in the question. Note that it does not need to be balanced, as the question states it wants the unbalanced equation:

$CH_{4}+O_{2}$ → $CO_{2}+H_{2}O$

This is the preliminary, unbalanced equation with the correct chemical formulas.

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3 years ago