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Nikolay [14]
3 years ago
13

An analog and a digital version of an audio signal were copied.

Chemistry
2 answers:
AleksAgata [21]3 years ago
8 0

Answer:

The answer is A.Digital waves can be copied without damaging the audio signal, whereas analog waves cannot

Explanation:

I took AP EX quiz.

tigry1 [53]3 years ago
3 0

Answer:

a

Explanation:just did the question and I guessed an answer cuz I didnt know it and I got it wrong so its a for a p e x

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Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 9.6 g of methane is
lianna [129]

Answer:

21.6 g

Explanation:

The reaction that takes place is:

  • CH₄ + 2O₂ → CO₂ + 2H₂O

First we<u> convert the given masses of both reactants into moles</u>, using their <em>respective molar masses</em>:

  • 9.6 g CH₄ ÷ 16 g/mol = 0.6 mol CH₄
  • 64.9 g O₂ ÷ 32 g/mol = 2.03 mol O₂

0.6 moles of CH₄ would react completely with (2 * 0.6) 1.2 moles of O₂. As there are more O₂ moles than required, O₂ is the reactant in excess and CH₄ is the limiting reactant.

Now we <u>calculate how many moles of water are produced</u>, using the <em>number of moles of the limiting reactant</em>:

  • 0.6 mol CH₄ * \frac{2molH_2O}{1molCH_4} = 1.2 mol H₂O

Finally we<u> convert 1.2 moles of water into grams</u>, using its <em>molar mass</em>:

  • 1.2 mol * 18 g/mol = 21.6 g
4 0
2 years ago
Electric power plants are the main source of:
bekas [8.4K]
The correct answer is particle pollution.
8 0
3 years ago
The units used to measure heat are?
Akimi4 [234]

Answer&Explanation:

The unit used to measure Heat is joule equal to that of Energy and is abbreviated as (J)

7 0
3 years ago
Choose whether each statement is a scientific hypothesis, theory, or law. The pressure a gas exerts on a container increases as
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Answer:

1) theory

2) law

3) hypothesis

Explanation:

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7 0
2 years ago
What assumptions do we make in order to use the Henderson-Hasselbalch equation? a. Both the weak acid and its conjugate base are
zepelin [54]

Answer:

The final and initial concentration of the acid and it's conjugate base are approximately equal, that is we use the weak acid approximation.

Explanation:

The Henderson-Hasselbalch is used to calculate the pH of a buffer solution. It depends on the weak acid approximation.

Since the weak acid ionizes only to a small extent, then we can say that [HA] ≈ [HA]i

Where [HA] = final concentration of the acid and [HA]i = initial concentration of the acid.

It also follows that [A^-] ≈ [A^-]i where [A^-] and[A^-]i refer to final and initial concentrations of the conjugate base hence the answer above.

7 0
3 years ago
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