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emmainna [20.7K]
4 years ago
14

Identify one of the many reasons why a scientist might use a model?

SAT
2 answers:
Gemiola [76]4 years ago
7 0
The answer is D. Hope that helps!
RSB [31]4 years ago
3 0
Models are a less expensive means of testing
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How to train your brain for the ACT,SAT
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study, focus, avoid ditraction i think, etc

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Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You o
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Margaret is playing a game with a standard deck of 52 cards which contains 4 jacks. the first player to select a jack gets to st
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With a typical 52-card deck that has 4 jacks, Margaret is playing a game. The game is initiated by the first player to choose a jack. When choosing first, Margaret's probability of selecting Jack is 1/13.

The same will occur since probability will be determined using the formula necessary outcome divided by total outcome.

Here, the total number of cards in the deck (total outcome) equals 52.

Given that Margaret can select any of the four jacks, the necessary result (number of jacks) is 4.

Probability is 4/52, or 1 by 13, which is the required probability for the question.

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2 years ago
When 2. 0 m aqueous solutions of sodium bicarbonate and hydrochloric acid react, it produces carbon dioxide, water and sodium ch
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The number of mole of carbon dioxide, CO₂ formed from the reaction is 0.0632 mole.

<h3>How to determine the mole of NaHCO₃</h3>
  • Molarity of NaHCO₃ = 2 M
  • Volume = 31.6 mL = 31.6 / 1000 = 0.0316 M
  • Mole of NaHCO₃ =?

Mole = Molarity x Volume

Mole of NaHCO₃ = 2 × 0.0316

Mole of NaHCO₃ = 0.0632 mole

<h3>How to determine the mole of CO₂</h3>

NaHCO₃ + HCl —> CO₂ + H₂O + NaCl

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂.

Therefore,

0.0632 mole of NaHCO₃ will also react to produce 0.0632 mole of CO₂.

Thus, 0.0632 mole of CO₂ was obtained from the reaction

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2 years ago
Make a slogan expressing the importance of synthesis in writing
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The slogan is " understanding literature through synthesis". Check more about the importance of writing below.

<h3>What is the importance of synthesis in writing?</h3>

Synthesis is known to be the one that uses both information that has been paraphrased and also the one where the writer uses other information obtained from a lot of  sources.

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