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Afina-wow [57]
3 years ago
8

Which describes the flow of energy in a food chain? (Which food chain makes sense) A. Sun-->Grass-->Mouse-->Snake B. Gr

ass-->Mouse-->Snake-->Sun C. Snake-->Sun-->Grass-->Mouse D. Mouse-->Snake-->Sun-->Grass
Chemistry
1 answer:
zheka24 [161]3 years ago
4 0
A. would be the best answer to the question
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What are the two main factors that affect deep ocean currents​
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coastal and sea floor features influence their location direction and speed coriolis effect also influence deep ocean current

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At what distance from Earth are weather maps drawn?
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10^5 meters

Explanation:

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OK! this is for the weebs :D
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Explanation:3

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Read 2 more answers
A 3.82 g piece of limestone contains 2.62 g of CaCO3
Kobotan [32]

Considering the definition of percentage by mass, the mass percentage of CaCO₃ is 68.59%.

<h3>What is mass percentage</h3>

The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

mass percentage=\frac{mass of solute}{mass of solution}x100

<h3>Mass percentage of CaCO₃</h3>

In this case, you know:

  • mass of CaCO₃: 2.62 grams
  • mass of limestone: 3.82 grams

Replacing in the definition of mass percentage:

mass percentage=\frac{2.62 grams}{3.82 grams}x100

<u><em>mass percentage= 68.59 %</em></u>

Finally, the mass percentage of CaCO₃ is 68.59%.

Learn more about percentage by mass:

brainly.com/question/24201923

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#SPJ1

7 0
1 year ago
Sodium hydroxide +HCI ➙ sodium chloride +H2O<br><br> Is this a:
Alexus [3.1K]
Neutralization reaction??
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