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Stolb23 [73]
3 years ago
15

Determine whether the statement is true or false, and why. "If a theory becomes supported by evidence, it can become a law."

Chemistry
1 answer:
loris [4]3 years ago
5 0

Answer: D. False, it should read, "A theory and a law are already both supported by evidence and are equal, but they have different functions."

Explanation:

A  "Theory" and  a'' Law" in scientific method are already both supported by evidence but they have different function,

The function of  " Theory" in scientific method is to give an explanation to the observations and findings gathered during the process. It can be modified, improved or even rejected as more information is being gathered.

While a '' Law '' tends to describe an observed event in nature that is true whenever it is put to test. It does not explain why the occurence or event is true.

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<h2>67%</h2>

Explanation:

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In the reaction Ca + Cl2 → CaCl2, what is the mole ratio of chlorine to calcium chloride?
Anit [1.1K]

Answer:

D. 1:1

Explanation:

For every 1 mole of chlorine (Cl₂), there is one mole of calcium chloride (CaCl₂).

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6 0
3 years ago
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A solution is prepared by dissolving 38.6 g sucrose (C12H22O11) in 495 g of water. Determine the mole fraction of sucrose if the
EastWind [94]

Answer:

x_{suc}=0.00406

Explanation:

Hello!

In this case, since the mole fraction relates the moles of solute and the moles of solution, and for sucrose it is:

x_{suc}=\frac{n_{suc}}{n_{suc}+n_{water}}

Whereas we need to compute the moles of both sucrose and water based on their molar masses (342.3 and 18.02 respectively) as shown below:

n_{suc}}=\frac{38.6g}{342.3g/mol}=0.113mol\\\\ n_{water}}=\frac{495g}{18.02g/mol}=27.5mol\\

Thus, the mole fraction sucrose turns out:

x_{suc}=\frac{0.112}{0.112+27.5}\\\\x_{suc}=0.00406

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