How many grams of nacl are required to make 250. 00 ml of a 3. 000 m solution?

Answers

Answer 1
Molarity (M) = moles of solute (mol) / Volume of the solution (L)

Molarity of the solution = 3.000 M
Volume of the solution = 250.0 mL
0.25 moles in 250.0 mL
= molarity x volume of the solution


= 3.000 M x 0.25 L
= 0.75 mol

Hence, 0.75 mol of NaCl is needed to prepare 250.0 mL of 3.000 M NaCl solution.


Moles of NaCl in 250.0 mL = 0.75 mol
Molar mass of NaCl = 58.44 g/mol
Mass of NaCl in 250.0 mL = Moles x Molar mass



Hence, 43.83 g of NaCl is needed to prepare 250.0 mL of 3.000 M solution.

Related Questions

A stop sign is in the shape of regular octagon. What is the measure of each of the interior angles of the stop sign?

Answers

Answer: 135 degrees

Explanation:

The measure of an interior angle of any polygon is (n-2)*180/n, where n is the number of sides in the polygon.

Since the stop sign is an octagon, there are 8 sides, so we can plug in 8 for n.

Therefore, the measure of each interior angle is (8-2)*180/8

= 6*180/8

= 1080/8

= 135 degrees

What caused the difference in the amount of x-ray to be released according to henry moseley?

Answers

The factor that triggered the difference in the amount of x-ray to be released according to Henry Moseley is the difference in atomic mass.

Who is Henry Moseley?

Henry Gwyn Jeffreys Moseley was an English Physicist. His contribution to physics was that he was able to measure the various X-Ray spectra of various elements by the use of diffraction in crystals.

He was able to establish a relationship between atomic number and wavelength. The relationships discovered between these elements became known as Moseley's Law.

Learn more about Moseley's Law at:
https://brainly.com/question/1747430

Discuss how your personal self worth may help you achieve the grades that may enable you to follow the career of your choice.

Answers

Answer:

Adopt positive mental attitude,work out where your falling short,Talk to your teachers and pay more attention in class also ask questions

A silo​ (base not​ included) is to be constructed in the form of a cylinder surmounted by a hemisphere. The cost of construction per square unit of surface area is times as great for the hemisphere as it is for the cylindrical sidewall. Determine the dimensions to be used if the volume is fixed at cubic units and the cost of construction is to be kept to a minimum. Neglect the thickness of the silo and waste in construction

Answers

The dimensions to be used if the volume is fixed at cubic units include:

Surface area of a cylinder is 2πrh +2πr² Volume of cylinder = πr²h Volume of a hemisphere = 2/3 π r³ Surface area of a sphere = 4πr²

What is Volume?

This is defined as the amount of three-dimensional space enclosed by a closed surface.

The dimensions which can be used are shown above where r is radius and h is height.

Read more about Volume here https://brainly.com/question/12410983

The organism that is in longest reign and is relative to the percent of time dominating the surface of earth.

Answers

Answer:

the barosphere is made up of the parts of Earth where life exist over a long period of time the outer sphere develops a mix of oxygen

Based on the distribution map below, which country receives the most imports from vietnam?

Answers

Based on the distribution map below, which country receives the most imports from Vietnam?

The United States

Answer: The United States

Hope this helps <3

Is he cool?
A: Yes
B: Maybe
C: No
D: He is cool and smart
E: None of the above
F: He is rich​

Answers

Answer:

Yes because he can be a learly good friend to hang out with

Answer:

D.

Explanation:

HE IS COOL AND SMART or F he is rich?

How long will it take to go 150,000 meters traveling at 50 km/hour?

Answers

Answer:

3 hours

Explanation:

1. Convert 150,000 meters into kilometers - 150,000 ÷ 1000 = 150 kilometres

2. Use the equation: time = distance ÷ speed

3. Substitute in the known values: time = 150 km ÷ 50 km/h = 3 hours

Hope this helps!

Answer:

3 hours

Explanation:

First, you have to convert meters to kilometers.

150,000 meters 150 kilometers

Then you divide 150 by 50 and see what you get:

150 ÷ 50=3

It will take 3 hours to go 150,000 meters at 50 km/hour

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

Erica and amy started biking in opposite directions.

Answers

If this is you’re full question

Erica and Amy started biking in the opposite directions at the same time from the same place. Erica biked at a speed of 6 meters per second and Amy biked at a speed of 4 meters per second. How soon were they exactly 1 km apart?

Than the answer is 100 seconds

Work out the current through an electric kettle with a power of 2. 2kw if it uses the 180v mains supply. Round your answer to 2 significant figures.

Answers

Answer:

I=p/v

2.2x10power1000/180

2200/180

12.22Amps

The questions on a test consist of 10 multiple choices, 3 essays, and 9 free responses. If the questions are ordered randomly, what is the probability that the first question is a free response?

Answers

Answer:

9/22 or 40.9%

Explanation:

Probability describes the likelihood of an event. To find simple probability, like in this question, use division.

To find the probability of the first question being a free response, you first need to find the total number of questions. This can be done by adding together all of the given information. There are 10 multiple choice, 3 essays, and 9 free responses.

10 + 3 + 9 = 22

This means that there are 22 total questions. Next, find how many of these questions are free-response. We know that there are 9 free responses and 22 questions in total. So, 9 out of 22 are free responses. This can be rewritten as 9/22.

If you want to find the percentage, simplify the fraction and convert it to a percentage.

9/22 = 0.409

Then, move the decimal 2 places to the right. This gives you 40.9%, which is the probability of the first question being a free-response.

If you subtract 0. 3 from a certain number, add 0. 4 times the original number to the result, and then add another 2. 78, you'll get 25. What was the original number?

Answers

The orginal number is 0.8 hope this helps

Which of the following correctly describes how heat behaves.

Answers

Explanation:

heat travels from a region lower concentration to a region of higher concentration

Which information can be found in both the biography and autobiography.

Answers

Answer:

The story of someone's life

Explanation:

Biography is writing about another persons life.

An Auto-biography is when you write about your own life.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The Information that can be found in both Biography and Autobiography is mostly same the only difference we see is experiences of the person in different point of view.

Biography: A collection of someone's life experiences and struggles is written by someone.

Autobiography: A collection of experiences that he went through in his life written by himself.

Information found both in biography and autobiography is same which deals with the nonfictional stories or events like overview of the personality, experiences and events that changed or shaped the person or effected the person.

Compared to biography autobiography is more authentic and make you feel connected to the person as the person who had experienced the events in life can explain us more than an person who is inspired from other person.

To study more about Biography:https://brainly.com/question/26447560

>calculate the average rate of change for the graphed sequence from n = 2 to n = 4.

Answers

since n is 4 and n is 2 i belive it could be 6

Buzz appliances manufactures two​ products: food processors and espresso machines. The following data are​ available: food processors espresso makers sales price ​$125 ​$225 variable costs ​$80 ​$190 the company can manufacture either two food processors per machine hour or three espresso machines per machine hour. The​ company's production capacity is​ 1,600 machine hours per month. To maximize​ profits, what product and how many units should the company produce in a month​ (assuming unlimited demand for both​ products)?

Answers

In order to maximize profit, 4800 Expresso machines and 0 food processors should be produced.

How to maximize profit

From the information given, the contribution margin per hour for Expresso makers will be:

Sales price = $225

Less: Variable cost = $190

Contribution margin = $35

Units per hour = $3

Contribution margin per machine hour = $35 × 3 = $105

Also, the Contribution margin per machine hour for food processor is $90.

Number of units available = 1600

Units per machine hour = 3.

Units to manufacture = 1600 × 3 = 4800

Therefore, to maximize profit, 4800 Expresso machines and 0 food processors should be produced.

Learn more about profit on:

https://brainly.com/question/19104371

SITE in full sentence​

Answers

Answer:

There is a site under work at that town. The site is a work in proggres.

Explanation:

Answer:

Site sentence example. He gave us access to a web site on which to submit our information.

On food labels, the term wheat flour actually refers to refined white flour

Answers

false

refined flour starts as wheat flower but it has a bunch of different added things

What are mathematical terms which cannot be precisely defined.

Answers

Answer:

The mathematical term that cannot be precisely defined is referred to as: a point.

Explanation:

Two common ions of manganese are mn2+ and mn3+. Which binary ionic compound is likely to form?

Answers

Answer:

MnO

Explanation:

The other compounds imply oxidation states of N, Br and Cl that does not exist.

A 60 g ball is tied to the end of a 70 -cm-long string and swung in a vertical circle. The center of the circle, as shown in the figure,(figure 1) is 150 cm above the floor. The ball is swung at the minimum speed necessary to make it over the top without the string going slack.

Answers

The tension in the string an instant before it broke is; T = 0.86 N

What is the Tension in the string?

We are given;

mass of ball; m = 60 g = 0.06 kg

Length of string; L = 70 cm = 0.7 m

Height the ball reaches; h = 150 cm = 1.5 m

From Newton's equation of motion;

v² - u² = 2as

where v = 0 m/s Thus;

-u² = 2(-9.81 * (1.5 - 0.7)

u² = 15.696

u = √15.696

u = 3.17 m/s

Thus, tension is;

T = mu²/L

T = (0.06 * 3.17²)/0.7

T = 0.86 N

Read more about Tension at; https://brainly.com/question/14187947

Using the standard normal table, the probability that seth’s light bulb will last no more than 14,500 (p(z ≤ 1. 25)) hours is about.

Answers

How many standard deviations above the mean is 14,500 hours 1.25 1.5 2.5 using the standard normal table the probability that Seth’s light bulb will last no more than 24,500 (P(z<1.25)) hours is about 89%.

Chlorofluorocarbons (cfcs) such as cf2cl2 are refrigerants whose use has been phased out because of their destructive effect on earth's ozone layer. The standard enthalpy of evaporation of cf2cl2 is 17. 4 kj/mol, compared with δh°vap = 41 kj/mol for liquid water.

Answers

hey I love you so much don't forget

Pam started watching a movie at 2:53 p. M. The movie was 1 hour and 52 minutes long. After the movie, pam rode her bike for 46 minutes. When did pam finish riding her bike?

Answers

Pam finished her bike ride at 5:31 p.m.

How to calculate the time Pam finished her activities?

To calculate the time that Pam finished her activities (watching a movie and riding her bike) we must add the number of minutes that she used for these two activities and then add this number of minutes to the time that she started her activities. (2:53 p.m.)

She started at 2:53 p.m.She watched a movie that was 1 hour and 52 minutes long - she finished watching the movie at 4:45 p.m.She rode her bike for 46 minutes - she finished riding her bike at 5:31 p.m.

Learn more about time in: https://brainly.com/question/26941752

What is a major division between gravity and the electromagnetic force on one hand and the nuclear forces on the other?(1 point).

Answers

Gravity is force present between masses while electromagnetic forces are found between charges.

Nuclear forces are short range while electromagnetic forces are long range.

Electromagnetic force Vs Nuclear force

Nuclear force are short ranged while electromagnetic forces cover a wider range, it is dependent on the charges present. Unlike charges attract each other while like charges repel each other in electromagnetic forces.

Nuclear forces occur in the nucleus of an atom and it an attractive force. unlike electromagnetic forces nuclear force do not repel.

Hence we can conclude that ; Gravity is force present between masses while electromagnetic forces are found between charge and Nuclear forces are short range while electromagnetic forces are long range.

Learn more about Nuclear force : https://brainly.com/question/303835

Answer: C: Gravity and Electromagnetic force have infinite ranges and nuclear have small ranges

Explanation: I took the test today and promise it's right

What are the functions of „hubble space telescope‟.

Answers

answer: it’s functions include, detecting ultraviolet light, and taking vivid photographs while exploring space.

Why is the normal range for the mass of dna in a male cat cell lower than for a female cat?

Answers

Answer:

Explanation:

This is because Y chromosomes are smaller than X chromosomes so the mass of DNA is smaller in male cells than in female cells.

Hope this was helpful :)

How does the author use anastasia’s dialogue to develop her character in this passage? to clarify keri’s dialogue to reinforce keri’s dialogue as a contrast to keri’s dialogue as an addendum to keri’s dialogue.

Answers

Answer:

the answer to your question would be  to clarify Keri’s dialogue

Explanation:

took the test

Answer:

A

Explanation:

A company gives each new salesperson a commission of $300 for the sale of a new car. The salesperson will receive a $100 increase for each additional car the person sells that week, so the person gets $400 for the next sale that week. Which equation represents the number of cars a salesperson must sell to earn $4,200 in commissions in a week? recall that for an arithmetic sequence, mc025-1. Jpg is equivalent to mc025-2. Jpg. Mc025-3. Jpg mc025-4. Jpg mc025-5. Jpg mc025-6. Jpg.

Answers

An equation which represents the number of cars a salesperson must sell to earn $4,200 in commissions is [tex]4200 = \frac{n}{2}(2(300) +(n-1)100)[/tex].

Given the following data:

First commission = $300.Second commission = $400.Common difference = $100.Total commission = $4,200.

How to calculate an arithmetic sequence.

Mathematically, the sum of an arithmetic sequence is calculated by using this expression:

[tex]S_n = \frac{n}{2}(2a +(n-1)d)[/tex]

Where:

d is the common difference.[tex]a_1[/tex] is the first term of an arithmetic sequence.n is the total number of terms.

Substituting the given parameters into the formula, we have;

[tex]4200 = \frac{n}{2}(2(300) +(n-1)100)[/tex]

Read more on arithmetic sequence here: brainly.com/question/12630565

Answer:

A 4200=n(2(300)+(n-1)100/2)

Explanation:

I got 100% on my unit test. This is the one that makes sense, and if you add up 300+400+500+600 etc. until you get a sum of 4200, this is the formula that matches the number of terms (cars sold), which is 7. He has to sell 7 cars.

Selective breeding has led to the production of modern domesticated crops and animals. Question 1 options: true false.

Answers

True because selective breeding is currently in use today
True in today’s time we still use selective breeding for certain crops suck as potato, tomatoes, bananas
Other Questions
Bankruptcy:____.a. creates value for a firm.b. transfers value from shareholders to bondholders. c. technically occurs when total equity equals total debt. d. costs are limited to legal and administrative fees. e. is an inexpensive means of reorganizing a firm. #47 Choose the correct code assignment for the following scenario: 38-year-old with night blindness acquired a few years ago.A. H53.62B. H53.61C. H53.60D. H53.69 What could you multiply by to clear the fractions? Solve for xx.23(x + 4) = 59x + 1 When carrying out a liquid-liquid extraction using a separatory funnel, Group of answer choices the bottom layer, which always contains the organic product, is always removed first. the organic layer must always be dried with an anhydrous salt like MgSO4. separation of layers is most efficient when the separatory funnel is drained with the top on. the top layer is always removed first with a disposable pipet. Why do I keep taking deep breaths?? 80.89 divided by 8.425 GIVING BRAINLIEST NEED THIS RLLY SOON THANKS! Can you please answer these 3 questions When the polynomial 3x^3+22x^2+38x+15 is divided by (x + 2), the remainder is 3. What is known about the function? 1. Victoria is upset about how the President of the United States is dealing with an issue. She decidesto write an email explaining to the President how she feels.Amendment:Explain: 1) The sum of three numbers is 22. The second is 3 more than the first. The third isone less than twice the first. Find the numbers. Each section of toy train tracks is 13 centimeters long. If jude lays 15 section end to end, how long is his train track How can a hammer be both excludable and non-excludable? In a life cycle with alternation of generations, multicellular haploid forms alternate with ________. What is X? its just lines, Men are more likely than women to prioritize economic and national security issues. Women are more likely to prioritize healthcare and education issues. The difference in who men and women tend to vote for is known as Line e passes through points (10, 8) and (3, 5). Line f passes through points (3, 1) and (10, 4). Are line e and f parallel or perpendicular? how do you write 13 is 1/3 of m as an equation c) Ram must be eating sweets. (change into perfect past tense) What type of association does the graph show between x and y? Linear positive association Nonlinear positive association Linear negative association Nonlinear negative association