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miss Akunina [59]

3 years ago

7

How is a compound different from mixtures

1 answer:

borishaifa [10]3 years ago

8 0

Answer: a compound is a substance that is made up of more than one type of atoms bonded together, mixtures are a mix of multiple elements or compounds which haven't bonded together.

Explanation:

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Which statements describe prominences? Check all that apply.

ella [17]

Answer:

B. Prominences are composed of cool, dense gas.

C. Prominences can disturb radio communications on Earth.

D. Prominences cycle over an 11-year period.

E. Prominences are loop shaped.

Explanation:

Prominence is the release of high energy particles or dense gases in the form of a loop shape from the surface of the sun. It is cooler and flows out into the Sun's hot atmosphere known as corona.

Once formed, prominence can be quiescent in the space for some period of time before it erupt and get ejected. This eruption and ejection can lead to coronal mass ejections which extends over a very long distance.

When compared to the Sun's temperature, prominences are cooler.

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3 years ago

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An atom that has 13 protons and 15 neutrons is an isotope of what element

Margarita [4]

Answer:

gfs you want to be your friend and rr

Explanation:

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3 years ago

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Given one mole of each substance, which of the following will produce the FEWEST particles in aqueous solution? 1. sodium nitrat

svlad2 [7]

<u>Answer:</u> The substance that produces fewest particles is $CH_2Cl_2$

<u>Explanation:</u>

Ionization reaction is defined as the reaction in which an ionic compound dissociates into its ions when dissolved in aqueous solution.

Covalent compounds do not dissociate into ions when dissolved in aqueous solution.

For the given options:

<u>Option 1:</u> Sodium nitrate

The chemical formula of sodium nitrate is $NaNO_3$

The ionization reaction for the given compound follows:

$NaNO_3(aq.)\rightarrow Na^+(aq.)+NO_3^-(aq.)$

This produces in total of 2 ions.

<u>Option 2:</u> $CH_2Cl_2$

The given compound is a covalent compound and do not dissociate into its ions. It remains as such as a single unit.

<u>Option 3:</u> $K_2SO_4$

The chemical name for the given compound is potassium sulfate.

The ionization reaction for the given compound follows:

$K_2SO_4(aq.)\rightarrow 2K^+(aq.)+SO_4^{2-}(aq.)$

This produces in total of 3 ions.

<u>Option 4:</u> Sodium phosphate

The chemical formula of sodium phosphate is $Na_3PO_4$

The ionization reaction for the given compound follows:

$Na_3PO_4(aq.)\rightarrow 3Na^+(aq.)+PO_4^{3-}(aq.)$

This produces in total of 4 ions.

Hence, the substance that produces fewest particles is $CH_2Cl_2$

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3 years ago

Why are large numbers of animals found in areas where upwelling occurs

Ivan

Answer: this is because nutrients are increased by the movement of water.

Hope this helps! ^^

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2 years ago

67.3 inches to meters

Drupady [299]

Answer: 1.70942

Explanation:

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3 years ago

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