Starting with 0.750l of a buffer solution containing 0.30 m benzoic acid (c6h5cooh) and 0.35 m sodium benzoate (c6h5coona), what will the ph of the solution be after the addition of 340.0 ml of 0.350m hcl? (ka (c6h5cooh) = 6.5 x 10-5)

Answers

Answer 1

Answer:

a

Explanation:


Related Questions

Data collected at checkout counters in a grocery store is an example of:

Answers

Answer: Its an example of input

What is the molarity of a solution that contains 5.80 grams of nickel (ii) nitrate in 500. ml?

Answers

molarity is defined as the number of moles of solute in 1 L of solution
molar mass of Ni(NO₃)₂ - 182.7 g/mol
number of moles of Ni(NO₃)₂ - 5.80 g/ 182.7 g/mol = 0.0317 mol
number of moles in 500 mL - 0.0317 mol
therefore number of moles in 1000 mL - 0.0317 mol / 500 mL x 1000 mL/L
molarity of the solution is - 0.0634 M

A personal identification number consists of 3 letters followed by 4 digits. the 5 vowels cannot be used, and the last digit cannot be 0 or 9. how many different numbers are possible?

Answers

The total number of possible PINs' that you can make is; 74,088,000 PINS

How to solve probability combinations?

Each of the first 3 letters can be chosen from the 21 letters since 5 vowels cannot be used, {A, B, C, …, U, V, W}.

Thus, number of possible choices = 21³ possible choices.

The first 3 digits can be any number from {0, 1, 2, …, 9}, so there are 10³ choices.

The last digit cannot be 0 or 9, so you can select from {1, 2, 3, …, 8} which gives 8 choices.

Then the total number of PINs that you can make is; 21³ × 10³ × 8 = 74,088,000

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Zoey put a $1040 item on layaway by making a down payment of 13% of the purchase price. how much does she have left to pay after making the down payment?

Answers

$904.8 for the 87% that she needs to pay

Healthy grains is planning a new design for its best-selling oatmeal. it has four containers to choose from. it costs the company $0.03 per cubic inch of oatmeal to fill a container. the company does not want the new container to cost more than $4.00 to fill. which container should the company use? use 3.14 for pi.

Answers

The container that the company should use is Container B because it costs less than $4.

Calculations and Parameters:

Given that:

The volume of the Cylinder =

We would calculate individually for each of the containers:

Cost of container A

=137.135 * 0.03

=$4.12.

The volume of container B=

Base area x height

=12.57x10=125.7 cubic in.

Cost of container B=

125.7 * 0.03

=$3.77

The volume of container c= cubic in

Cost of container C=

276.32 * 0.03

=$8.29.

The volume of container D= cubic in.

Cost of container D=

169.56 * 0.03

=$5.08.

Container B cost less than $4, so it is the right answer.

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Becky is preparing a document for her environmental studies project. she wants to check her document for spelling and grammar errors. which function key command should she use?

Answers

The function key command Becky should use is: F7

A function key is a special key designed to preform a specific set task, in this case, f7 is used for spell checks and grammar check a document.

A recent survey by a large circulation canadian magazine on the contribution of universities to the economy was circulated to 394 people who the magazine decided "are most likely to know how important are universities to the canadian economy". the main problem with using these results to draw conclusions about the general public's perception is:

Answers

The main problem associated with using these results to draw conclusions about the general public's perception is a lack of random selection.

What is a simple random sample?

A simple random sample simply refers to a subset of items that are typically selected from a statistical population (larger data set), wherein, each member of the subset has an equal probability of being selected.

Based on this survey by the Canadian magazine, we can infer and logically deduce that the main problem associated with using the aforementioned results to draw conclusions about the general public's perception is a lack of random selection.

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Cheap and fast gas station is conducting a consumer satisfaction survey. which method of collecting data would most likely lead to a biased sample?

Answers

A method of data collection which would most likely lead to a biased sample is interviewing customers who call an 800 number posted on the costumers receipts.

What is sampling bias?

A sampling bias simply refers to a type of bias in which members of a certain population are selected in such a way that some members have a lower or higher sampling probability than the other members.

This ultimately implies that, a sampling bias occur when members of a certain population are selected incorrectly such as interviewing only the customers who call an 800 number which was posted on the costumers receipts.

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Anderson was feeling sluggish after school and decided to drink an energy drink so he could focus on his homework. it didn't seem to help, so he drank another. which of these statements best describes his decision-making process?

Answers

The statement which best describes his decision-making process is that he looked for a quick fix to a problem he may face again in the future.

What is the decision-making process?

The decision-making process is a cognitive process that involves gathering (obtaining) information, analyzing them, and then evaluating alternatives, so as to enable the proper selection of an optimum solution (choice) to a particular problem.

In this scenario, we can logically deduce that the statement which best describes Anderson's decision-making process is that he looked for a quick fix (solution) to a problem which he's likely to face again in the future.

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To find how high school students feel about hot lunches, adam walks to the nearest high school and gives a survey postcard to every twentieth student that enters the building. he asks the students to mail the postcard in if they choose to participate in the study. select all sampling methods used.

Answers

All the sampling methods used in the given survey are; convenience, systematic, and voluntary sampling.

What is the sampling method used?

From the question, we see that the surveyor selects the twentieth student who enters the building.

Now, the student do not enter the building to be surveyed but instead for other reasons and as such the researcher takes advantage of that and selects them. This is a form of convenience sampling.

It is also a form of systematic sampling because the researcher selects every twentieth student and not any other.

Lastly, it is a form of Voluntary sampling because the students selected to participate in the survey are free to choose whether to participate in the survey or not.

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Answer:

B, E, and F.

Explanation:

B. convenience

E. systematic

F. voluntary

A watch company is developing packaging for its new watch. the designer uses octagons with a base area of 30 in2 and rectangles with a length of 10 in to create a prototype for the new package. what is the volume of the prototype?

Answers

The volume of the prototype is 300 inches cube.

How to find volume?

The volume of the prototype can be found as follows:

volume = base area × height

Therefore,

base area = 30 inches²

height = length = 10 inches.

Hence,

volume of the prototype = 30 × 10

volume of the prototype =  300 inches³.

Therefore, the volume of the prototype is 300 inches³

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Which line from the excerpt is an implicit detail? the rain was falling, accept it, get back in of wet brown life, roadside grass,

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of wet brown life  excerpt is an implicit detail.

What is an excerpt of a speech?

Excerpt is noun and it is a part or passage taken from a book, speech, play, etc, and considered on its own.

Implicit details refers to something which is suggested or implied but not ever clearly said. An example of implicit is when your wife gives you a dirty look when you drop your socks on the floor.

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Based on the given information, determine which company has a lower minimum and find the minimum value. g(x) at (10, 855) f(x) at (16, 536) g(x) at (16, 536) f(x) at (10, 855)

Answers

The minimum production cost of company 2 is greater than the minimum production cost of company 1. We arrived at this value by comparing the production cost of both companies.

What is meant by minimum production cost?

The overall cost incurred by a company to manufacture a product or provide services is known as the cost of production.

The objective of every company is to keep this cost at minimum, hence the minimum production cost.

How do find minimum Production Cost?

Recall that the production function is given as:

f(x) = 0.25x² - 8x + 600

Inserting the values given by the schedule we have

f(6) = 0.25(6²) - 8(6) + 600 = 561f(8) = 0.25(8²) - 8(8) + 600 = 552f(10) = 0.25(10²) - 8(10) + 600 = 545f(12) = 0.25(12²) - 8(12) + 600 = 540f(14) = 0.25(14²) - 8(14) + 600 = 537

For company 2, we are given the various production costs as;

x   - g(x)

6  - 862.2

8  - 856.8

10 -  855

12 -  856.8

14 - 862.2

Juxtaposing the above, we can infer that the minimum production cost of company 2 is greater than the minimum production cost of company 1.

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With help from other enzymes, dna polymerase acts to join nucleotides together to form a new strand of dna. during normal dna replication at a replication fork, where does dna polymerase act?

Answers

Answer:

along both strands of DNA, where it produces complementary strands for each of the original strands

How much would you pay in move-in costs for the two-bedroom hometown apartment if you pay first and last month's rent, a $185 security deposit, and a 30 percent fee to the rental agent? round to the nearest dollar. $1,515 $1,370 $1,245 $855

Answers

The total rent payed for the apartment =

$1,370

Calculation of move-in cost

The complete question:

How much would you pay in move-in costs for the two-bedroom hometown apartment if you pay first and last month's rent, a $185 security deposit, and a 30 percent fee to the rental agent? round to the nearest dollar

2 bedroom hometown: $515 plus utilities

$1,515 $1,370 $1,245 $855

The cost of 2 bedroom apartment = $515 ×2 = $1,030

The security deposit= $185

The rental agent fee = 30/100× 515

= 15,450/100 = $154.5

Therefore the total rent payed for the apartment

= $1,030 + $185 + $154.5

= $1,369.5

~ $1,370

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What can be predicted about the waves if they were to crash into each other? refraction would occur. interference would occur. the resulting wave would travel at 4.2 hertz. the crest of wave a would overlap the trough of wave b.

Answers

Due to constructive interference, we can predict that: C. the resulting wave would travel at 4.2 hertz.

What is constructive interference?

Constructive interference of a wave can be defined as a phenomenon through which two waves of the same frequency and phase combines to form a wave of higher magnitude.

This ultimately implies that, the constructive interference of a wave causes an increase in the amplitude or frequency of waves.

Due to constructive interference, we would have:

Wave = 3 + 1.2

Wave = 4.2 hertz.

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Complete Question:

Jerimiah is studying Wave A and Wave B. Wave A is traveling at 3 hertz, and Wave B is traveling at 1.2 hertz. What can be predicted about the waves if they were to crash into each other?

Amara needs to create a special tasting menu at her restaurant. she needs to select 444 dishes from 777 available dishes and put them in a tasty sequence. how many unique ways are there to arrange 444 of the 777 dishes?

Answers

Based on the above scenario, the unique ways there are to arrange 444 of the 777 dishes is 840 .

What is the arrangement about?

In the case above, the number of different arrangements of the dishes is said to be the product between the numbers of options and thus it is

4 x 3 x 2 x 1 = 24

Therefore, the total number of unique ways of arranging 4 of the 7 dishes will be:

D = 24 x 35 = 840

Therefore, Based on the above scenario, the unique ways there are to arrange 444 of the 777 dishes is 840 .

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Listen and choose the activity that goes with the description. preparing an itinerary. packing for a trip. getting ready to book a trip. on vacation at the beach

Answers

Touring or tourism travel, school trips, vacation, business trip, etc.,. preparing an itinerary, packing for a trip and others.

What should be seen in a travel itinerary?

In any travel itinerary,  people often book hotels, car rentals, and others.

The aim of tourism is to relax, see nice places and feel better and so, Touring or tourism travel, school trips, vacation, business trip, etc.,. preparing an itinerary, packing for a trip and others.

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Answer: Preparing an itinerary. :]

Explanation:

Caregivers benefit the most from




individual counseling that addresses their own unique issues.


involvement in a support group


access to information about the care-receiver’s illness and resources.


support from their adult children.

Answers

Answer:

individual counseling that addresses their own unique issues.

Consumer protection comes from which of the following types of agencies?

-government

-for-profit business

-non-profit private

-All of the choices are correct.

Answers

Consumer protection comes from the following type of agency: A. government.

What is Consumer protection?

Consumer protection can be defined as a process that involves safeguarding and protecting the well-being and interests of buyers of goods and services, especially through a government agency that is established and saddled with following responsibilities:

EducationMobilizationRepresentation

In this context, we can infer and logically deduce that consumer protection comes from a government agency.

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1/3x-1/6y=4 6x-ay=8 in the system of equatuons above, a is a constant. if the system has no solution, what is the value of a?

Answers

Answer:

3

Explanation:

(1/3x-1/6y)×18=4×18 ⇒ 6x-3y=72

6x-ay=8  if a=3 ⇒ 6x-3y=8

72≠8

a=3 ⇒ system has no solution

Which expression represents the total perimeter of the pool edge? 12x2 + 15 20x2 + 25 12x2 + 8x + 25 24x2 + 16x + 50

Answers

An expression which represents the total perimeter of the triangular pool edge is: A. 12x² + 15.

How to calculate the perimeter of a triangle?

Mathematically, the perimeter of a triangle can be calculated by using this formula:

P = a + b + c

Where:

a, b, and c are length of sides.

In this scenario, the total perimeter of this triangular community pool is given by this mathematical expression:

Total perimeter = 3 × side of square

Total perimeter = 3 × (4x² + 5)

Total perimeter = 12x² + 15 units.

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Complete Question:

The tile along the edge of a triangular community pool needs to be replaced. Which expression represents the total perimeter of the pool edge?

Answer:

A) 12x2 + 15

Explanation:

You are using an approved third party tool in your client project and find a bug in it

Answers

No, you cannot decompile the code because it's a violation of the third party's intellectual property rights.

What is an intellectual property right?

An intellectual property (IP) right can be defined as a type of right given to an innovator by the government, especially for an intangible and innovative creation of the mind that solely depends on human intellect.

In this context, we can infer and logically deduce that you can't decompile the code for this approved third party tool because it's a violation of the third party's intellectual property rights.

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You have studied two other short stories, "the lady, or the tiger?" by frank r. stockton and "the necklace" by guy de maupassant. choose one of these stories and supply the information requested. if you need to reread the story, go to the link at the bottom of the lesson. characters

Answers

The plot of the "the lady, or the tiger?" by Frank r. Stockton, it tells the story about high classes of French society.

What is the story about?

The story titled "The Necklace" occurs in France and it took place in the mid nineteenth century.

Note that the context of the story is set on the high classes of French society and how Madame Loisel wans in dine need to belong to them.

Therefore, The plot of the "the lady, or the tiger?" by Frank r. Stockton, it tells the story about high classes of French society.

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According to one acid-base theory, nh3 acts as a base when an nh3 molecule

Answers

Answer:

...acts as a base when and NH3 molecule accepts an (H⁺ ion)

Rectangle qqq has an area of 222 square units. thea drew a scaled version of rectangle qqq and labeled it rectangle rrr. what scale factor did thea use to go from rectangle qqq to rectangle rrr?

Answers

The scale factor that thea used to go from rectangle q to rectangle r is; 6

How to work with Scale Factors?

The original rectangle q is missing and so I have attached it.

The length and width of the original rectangle as seen in the attached file are;

Length = 9

Width = 8

Thus;

Area of rectangle r = 9 * 8 = 72 sq.units

Since rectangle q has an area of 2 sq.units, then the area scale factor is;

72/2 = 36

Thus, scale factor in units = √36 = 6

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Dylan and roberta want to teach their children about money management. what is the best way to help their children understand money?

Answers

The best way to help children understand money is: The children should manage their own weekly allowances.

How to teach children about money?

When talking about money, it is always good to teach children about the use of money as early as possible. This is to enable them to start attaching the right value to money and learning about savings as early as possible.

Now, the best way to teach children about money management is to allow them manage their own money. This is good because experience is often said to be the best teacher.

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Which quote from the text reveals the central idea of the section ""the view of a son of liberty""?

Answers

Answer: B. We were dignified in destroying the tea. (paragraph 2)

Which output device allows a user to create a copy of what is on the screen?

printer

speakers

earphones

display or monitor

Answers

Answer:

monitor

Explanation:

Answer:

printer

Explanation:

got right on edg :)

Stephanie graduated from college and on her first job earned an annual salary of $25,000.

Answers

Based on the calculations, Stephanie's net monthly income (NMI) is equal to $1,666.33.

How to calculate net monthly income?

The net monthly income (NMI) of an employee can be calculated by subtracting the total deductions from the gross monthly income (GMI).

For the GMI, we have:

GMI = GAI/12

GMI = 25,000/12

GMI = $2,083.33.

For the total deductions, we have:

Total deductions = 259.00 + 132.00 + 26.00

Total deductions = $417.00.

Now, we can calculate the net monthly income (NMI):

NMI = GMI - total deductions

NMI = 2,083.33 - 417.00

NMI = $1,666.33.

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