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Anna35 [415]
1 year ago
9

Aluminum oxide is formed when aluminum combines with oxygen in the air. how many grams of al2o3 are formed when 23.6g of al reac

ts completely with oxygen?
SAT
1 answer:
Travka [436]1 year ago
6 0

Answer: I think the answer is 44.6 grams

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the musical note e can be modeled by the function, y = asin(1320πx), where a = 1 and x is the time in seconds. playing note e on
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Answer:

Miguel Asin y Palacios has written: 'Abenmassarra y su escuela'

Explanation:

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3 years ago
A binary number is to be transformed by appending three 0s to the end of the number. For example, 11101 is transformed to 111010
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Numbers can be converted from one base to another base. a. The transformed number is 8 times the value of the original number.

Given that:

Three 0s are appended to a binary digit to get a new binary digit.

Using the given values, the transformation can be illustrated as follows:

Where:

represents the three appended 0s.

In binary  represents 8 in decimal.

So, the above illustration can be expressed as:

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3 years ago
Find δs o for the combustion of methane to carbon dioxide and liquid water.
mote1985 [20]

The entropy change ΔS for the combustion of methane to carbon dioxide and liquid water is -242.6 J/mol.K

<h3>What is the Entropy in a Chemical system?</h3>

In a chemical system, Entropy (ΔS) is a quantitative measure of the variety of possible ways to disperse energy inside a chemical system.

  • In an isothermal process, entropy is determined as the quantity of heat transmitted to a system.

The chemical reaction for the combustion of methane can be expressed as:

\mathbf{CH_{4(g)} + 2O_{2(g)} \to CO_{2(g)} + 2H_2O_{(l)}}

The standard entropy of the combustion is expressed as:

\mathbf{\Delta S^0 =(S^0 _{CO_{2}} + 2 \times S^0 _{H_{2}O} )+(-S^0 _{CH_{4}}  -2 \times S^0 _{O_{2}} })

Replacing the standard entropies of the compounds into the above equation, we have:

\mathbf{\Delta S^0 =(213.8 \8 \ J/mol.K + 2 \times69.92 \ J/mol.K  )+(-186.16 \ J/mol.K -2 \times 205.04 \ J/mol.K})

\mathbf{\Delta S^0 =-242.6 \ J/mol.K}

Learn more about entropy here:

brainly.com/question/6364271

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2 years ago
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The correct answer is A. Country chooses to produce bananas instead of wheat.

Opportunity cost is termed as value of choice. It is the important concept in economics and also the relationship which is between choice and scarcity.

A good example of opportunity cost is you can spend money and time on other things but you can not spend time reading books or the money in doing something which can help.

Opportunity takes important part in economic theory.

8 0
3 years ago
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A mixture of pentadecane and heptadecane can be separated by.
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Answer:

Explanation:

A mixture of pentadecane and heptadecane can be separated by amides.

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