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3 years ago

11

A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin

to feel nauseated and dizzy. The first response should be to

1 answer:

ZanzabumX [31]3 years ago

4 0

Hjkkligfddguiijvgghuhhjjjugtjjjjhhhhhjjjiin do yeah hjkkkjcsduokn 35899&6& cduooookk

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Which net ionic equation would match this description of a chemical reaction: When a

krok68 [10]

Answer:

$3Mg^{2+}(aq.)+2PO_{4}^{3-}(aq.)\rightarrow Mg_{3}(PO_{4})_{2}(s)$

Explanation:

$Mg(NO_{3})_{2}$ , $Na_{3}PO_{4}$ are strong electrolytes. Hence they are fully ionized in aqueous solution.

$Mg_{3}(PO_{4})_{2}$ is a sparingly soluble salt. Hence it remains undissociated in aqueous solution.

So, total ionic equation:

$3Mg^{2+}(aq.)+6NO_{3}^{-}(aq.)+6Na^{+}(aq.)+2PO_{4}^{3-}(aq.)\rightarrow Mg_{3}(PO_{4})_{2}(s)+6Na^{+}(aq.)+6NO_{3}^{-}(aq.)$

Net ionic equation is written by omitting spectator ions from total ionic equation.

Here, $Na^{+}$ and $NO_{3}^{-}$ ions are spectator ions as they remain present on both side of total ionic equation.

So, net ionic equation:

$3Mg^{2+}(aq.)+2PO_{4}^{3-}(aq.)\rightarrow Mg_{3}(PO_{4})_{2}(s)$

So, option (d) is correct.

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Food deteriorates more slowly in a refrigerator because?

viktelen [127]

Answer:

as temperature increases it speeds up chemical reactions and that accelerates the spoiling process of food. Keeping food in a cold place (a fridge) slows down those processes.

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A copper wire is 44.85 cm long and weighs 1.521 g. The density of copper is 8.933 g/cm3.

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For every action there is an equal and opposite reaction is known as? *

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Answer:

Newton's third law

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Which of the following is the name given to a carbohydrate containing two monomers?

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Disaccharide forms when two monomers join.

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