Glencoe algebra 1 7-3 practice rational exponents answers

The value of entropy change (δs°) for this chemical reaction is equal to -620.4 J/molK.

The entropy change of a chemical reaction can be defined as the difference between the total entropy change that is associated with the products and the total entropy change for the reactants.

In Chemistry, the standard entropy of formation for the given chemical compounds and element are:

[tex]S_{O^2}= 205\;J/molK[/tex]

[tex]S_{C_2H_6}= 229.6\;J/molK[/tex]

[tex]S_{H_2O}= 69.9\;J/molK[/tex]

[tex]S_{CO_2}= 213.6\;J/molK[/tex]

Mathematically, the entropy change of a chemical reaction is given by this expression:

[tex]\Delta S_{rxn}=\sum [n \times products]-\sum [n \times reactants]\\\\\Delta S_{rxn}=\sum [4S_{CO_2}+ 6S_{H_2O}]-\sum [2S_{C_2H_6}+ 7S_{O_2}]\\\\\Delta S_{rxn}=\sum [(4\times 213.6) + (6 \times 69.9)]-\sum [(2\times 229.6) + (7 \times 205)]\\\\\Delta S_{rxn}=\sum [854.4 + 419.4]-\sum [459.2 +1435]\\\\\Delta S_{rxn}=\sum [1273.8]-\sum [1894.2]\\\\\Delta S_{rxn}=-620.4\;J/molK[/tex]

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Answer:

thats not a real question and just look lt up

Explanation:

Answer:

B. Sub-Saharan Africa

Explanation:

To capture his feet and head, the camera will need to be moved at least one foot backward. This is an Angles of Elevation and Depression theorem exercise.

The angle of elevation is the angle between the line of sight and the horizontal line when an observer looks up. While the Angle of Depression refers to the angle that is formed when the observer looks down.

The formulas are given as:

tan θ = y/x  ⇒      θ = tan -1 (y/x).  

Let us assume that x is the distance in feet that the tripod must be moved back.

Recall that the angle of depression and elevation as given in the question (full version attached) is 20°

The height of the Tripod is 4 feet, at a distance of 10 feet, therefore,

tan (20°) * (10 + x) = 4

⇒

x =4/tan (20°)-10

x= 4/(10.989909678 - 10)

x = 0.9899

x ≈ 1 feet.

Hence the camera must be moved back about 1 feet to capture Geroge..

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The flagpole forms a right-triangle with its base and its top

The height of the flagpole is 137.1 feet

To determine the height, we make use of the following tangent trigonometry ratio

[tex]\tan(68.5) = \frac{h}{54.0}[/tex]

Where:

h represents the height of the flagpole.

So, we have:

[tex]h = 54.0 * \tan(68.5)[/tex]

Evaluate

[tex]h = 137.1[/tex]

Hence, the height of the flagpole is 137.1 feet

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The cofactor and the appropriate letter or letters showing the position in the cycle diagram are:

A cofactor is known to be a kind of  chemical  compound that is said to be non-proteinous in nature. It is also known to be a metallic ion that is often needed in any reaction as a kind of catalyst in that chemical reaction.

Note that the Cofactors is often seen as the "helper molecules" that boast  biochemical transformations and as such the letters that show the  position in the cycle diagram are the ones given above.

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It should be noted thy Maslow’s hierarchy of needs is an organized progression from one’s most basic needs to less basic or discrete needs.

Maslow’s hierarchy of needs serves as the organization of human needs from top yo bottom of the needs scale.

The needs are are classified as;

Therefore, the given statement is correct.

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Answer:

It's True

Explanation:

90° because l think each right angle is equal to 90°

Plants use cellular respiration to break down molecules and then they use them is NOT correct to explain how energy flows and matter cycles in an ecosystem.

The ecosystem can be considered as the interaction between abiotic (e.g., water) and biotic factors (organism) in a given area.

In an ecosystem, the matter cycle and energy flow by crossing across different trophic levels.

The trophic levels are composed of organisms that show a special localization in the food web (e.g., herbivores).

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Answer:

The underlined phrase is essential. It isn't just any group of Phoenician sailors who discovered glass, nor is it that Phoenician sailors in general discovered it; the sentence refers to a particular group of sailors that used blocks of natron to cook on the beach.

Explanation:

source…Quizlet

I hope this helps

Have an AMAZING day. :)

Based on the calculations, the value of x and y in this equation are both equal to 5.

A system of linear equations can be defined as an algebraic equation of the first order that has two (2) variables with each of its term having an exponent of one (1).

Given the following data:

x + y = 10  .....equation 1.

x = 5.       .....equation 2.

In order to evaluate the given mathematical equation, we would substitute equation 2 into equation 1 as follows:

[tex]5+y=10\\\\y=10-5[/tex]

y = 5.

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Ans The NRF guiding principles

Explanation:

The NRF is built on scalable, flexible, and adaptable concepts.

Scalable, flexible, and adaptable operational capabilities are indeed included in the (NRF)National Response Framework's five key principles.

The National Response Framework (NRF) is a comprehensive guide developed by the United States Department of Homeland Security to facilitate effective response and recovery efforts during emergencies, disasters, and incidents. The NRF's five key principles, known as the "Five Mission Areas," outline the fundamental aspects of emergency management. These mission areas include:

1. Prevention: Activities aimed at preventing emergencies or disasters from occurring. This involves measures such as risk assessment, hazard mitigation, and public education to minimize the likelihood of incidents.

2. Protection: Actions focused on safeguarding individuals, critical infrastructure, and key assets from potential threats and hazards.

3. Mitigation: Efforts to reduce the impact and severity of disasters by implementing measures to minimize the potential damage and disruption caused by hazards.

4. Response: Immediate actions are taken to address and manage the consequences of an incident. This includes coordinating emergency response activities, mobilizing resources, conducting search and rescue operations, providing medical assistance, and ensuring public safety.

5. Recovery: Activities aimed at restoring affected communities and rebuilding the impacted areas after an incident. This includes facilitating the recovery process, providing assistance to individuals and businesses, restoring critical services, and rebuilding infrastructure.

In summary, scalable, flexible, and adaptable operational capabilities are integral to the National Response Framework's five key principles, as they enable effective emergency management and response during various incidents and disasters.

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#SPJ2

The location and interesting attractions of the different cities of cancún, guadalajara, and oaxaca are; Described in the answer below

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Answer:

n+6% of n

Explanation:

Let's just say n is the amount of money needed to buy that product. If 6% tax is added to that amount then that amount's 6% will be the added tax.

Answer:

n+0.06n.

Explanation:

Answer: C “The flightless bird native to the country”

Explanation:

None of the other answers make sense and I also took the quiz and got this question right.

In  math equations and inequalities, they are said to be both mathematical sentences that is created to link two expressions such as the use of symbol  >, <, ≤ or ≥. when two items are in a state of inequality.

An equation is known to be a type of mathematical statement that depicts the equal state of two expressions. It is often depicted with the symbol = which shows equality.

While an inequality is known to be a mathematical statement that shows that two given expression is said to lesser than or more than one another.

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The ideas are to be categorized into either the "University or College", "Vocational school" or On-Job training class".

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Answer:

this is the answer, here is an image that shows that answer

Explanation:

Answer:

500 on edge :)

Explanation:

Answer:

A The first one! 500!

Explanation:

I got it right.

Answer: 58.643 cm^3

Explanation:

Volume of a cone = (1/3) * π * r^2 * h

Half of the diameter is the radius, so r = 2 and h = 14.

Plug in: V = (1/3) * π * 2^2 * 14 = 58.643 cm^3 :)

The correct labelling of the components of the kidney is;

From left top:

Right:

This is an organ in the body that filters the blood and produces urine.

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The wavelength of the wave traveling at the given velocity and frequency is 3m.

Given the data in the question;

Wavelength is simply defined as the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

It is expressed as;

[tex]\lambda = \frac{v}{f}[/tex]

Where v is velocity and f is frequency.

To determine the wavelength of the wave, we substitute our given values into the expression above.

[tex]\lambda = \frac{v}{f} \\\\\lambda = \frac{600m/s}{200s^{-1}} \\\\\lambda = \frac{600ms/s}{200}\\\\\lambda = 3m[/tex]

Therefore,  the wavelength of the wave traveling at the given velocity and frequency is 3m.

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The surface area in physic refers to the total amount of space or area that is covered by the surface of an object or matter.

The surface area of a Prism for instance is given as:
(2 × Base Area) + (Base perimeter × height);

While the surface area of a Cube is :

6 x A² where a is the length of each side.

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The probability of drawing three aces in a row is the likelihood of drawing three aces

The probability of drawing three aces in a row is 0.000181

In a standard deck of 52 cards, there are 4 aces.

Given that the selection is without replacement; then we have the following selections:

The probability is then calculated as;

[tex]P = \frac{4}{52} * \frac{3}{51} * \frac{2}{50}[/tex]

Evaluate the products

[tex]P = 0.00018099547[/tex]

Approximate

[tex]P = 0.000181[/tex]

Hence, the probability of drawing three aces in a row is 0.000181

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Answer: social desirability .

Explanation: your welcome <3 .

The measure of angle MPK is acute angle between the intersecting lines

The measure of MPK is 86 degrees

To calculate the angle measure of MPK, we use the following equation:

MPK = 0.5 * (MK + LN)

From the figure, we have:

MK = 61

LN = 111

So, we have:

MPK = 0.5 * (61 + 111)

Evaluate the product

MPK = 86

Hence, the measure of MPK is 86 degrees

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Based on the information provided in figure 1 and figure 2, Skin pigmentation will not be altered, leading to a negative selection pressure.

The Figure shows the making of α-MSH in keratinocytes as a result of UV radiation.

The option that  effects of a mutation in the promoter of the tyr gene that prevents it from being transcribed is that Skin pigmentation will not be altered, leading to a negative selection pressure.

Conclusively, in  Figure 1, TYRTYR is needed for the steps in the melanin synthesis pathway but when it was not shown properly, it hinders melanocytes from synthesizing melanin even if there was an exposure to UVUV radiation. This would therefore leads to a negative selection pressure.

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An example of Big ideas math geometry student journal  question is what percentage of 260 is 65?

This is known to be a very popular Core Curriculum that has been set for Middle School and High School Mathematics. It was found to be  written by Ron Larson and Laurie Boswell.

To solve for the percentage of 260 that is 65, one has to categorized them

Percentage will be p:

So the equation will be:

p. 260 - 65

p = 65/ 260

p = 0.25 which is approximately 25 percent.

Therefore a percentage of 260 that is 65 is 25%.

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The example of shapes that was studied under the Math accelerated chapter 12 workbook is The volume of the prism is shown as 61.6in³. What is the height of the prism?

The Glencoe Math Accelerated is known to be a comprehensive robust text that has been set up to support the teachers teaching skills and styles and also to address the needs of your students.

To solve for the height of the prison. The formula is

V = lwh

V = 61.6

V= 8 x 2.2 x h

H = 61.6/17.6

H= 17.6h/17.6

H = 3.5in³

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Answer:

The value is going to be 0.96 M. You would need to refer to the chart so that you can solve the question properly. To solve for the value of this, you need to know the value of each mole. The equation is going to be MaVa=MbVb x (12). You would need to change the concepts to (0.16)(36.0) x = 0.48.