Reach Your Academic Goals.

Join Today to Score Better

Connect to the brainpower of an academic dream team. Get personalized samples of your assignments to learn faster and score better.

Connect to a Paper Expert

How can our experts help?

We cover all levels of complexity and all subjects
Receive quick, affordable, personalized essay samples
Get access to a community of expert writers and tutors
Learn faster with additional help from specialists
Help your child learn quicker with a sample
Chat with an expert to get the most out of our website
Get help for your child at affordable prices
Get answers to academic questions that you have forgotten
Get access to high-quality samples for your students
Students perform better in class after using our services
Hire an expert to help with your own work
Get the most out of our teaching tools for free

The Samples - a new way to teach and learn

Check out the paper samples our experts have completed. Hire one now to get your own personalized sample in less than 8 hours!

Competing in the Global and Domestic Marketplace:
Mary Kay, Inc.

Case study
Read Sample

Reservation Wage in Labor Economics

Read Sample

Pizza Hut and IMC: Becoming a Multichannel Marketer

Case study
High School
Read Sample

Washburn Guitar Company: Break-Even Analysis

Case study
Read Sample

Crime & Immigration

Read Sample

Interdisciplinary Team Cohesion in Healthcare Management

Case study
Read Sample

Customer care that warms your heart

Our support managers are here to serve!
Check out the paper samples our writers have completed. Hire one now to get your own personalized sample in less than 8 hours!
Hey, do you have any experts on American History?
Hey, he has written over 520 History Papers! I recommend that you choose Tutor Andrew
Oh wow, how do I speak with him?!
Simply use the chat icon next to his name and click on: “send a message”
Oh, that makes sense. Thanks a lot!!
Guaranteed to reply in just minutes!
Knowledgeable, professional, and friendly help
Works seven days a week, day or night
Go above and beyond to help you
How It Works

How Does Our Service Work?

Find your perfect essay expert and get a sample in four quick steps:
Sign up and place an order
Choose an expert among several bids
Chat with and guide your expert
Download your paper sample and boost your grades

Register a Personal Account

Register an account on the Studyfy platform using your email address. Create your personal account and proceed with the order form.


Submit Your Requirements & Calculate the Price

Just fill in the blanks and go step-by-step! Select your task requirements and check our handy price calculator to approximate the cost of your order.

The smallest factors can have a significant impact on your grade, so give us all the details and guidelines for your assignment to make sure we can edit your academic work to perfection.

Hire Your Essay Editor

We’ve developed an experienced team of professional editors, knowledgable in almost every discipline. Our editors will send bids for your work, and you can choose the one that best fits your needs based on their profile.

Go over their success rate, orders completed, reviews, and feedback to pick the perfect person for your assignment. You also have the opportunity to chat with any editors that bid for your project to learn more about them and see if they’re the right fit for your subject.


Receive & Check your Paper

Track the status of your essay from your personal account. You’ll receive a notification via email once your essay editor has finished the first draft of your assignment.

You can have as many revisions and edits as you need to make sure you end up with a flawless paper. Get spectacular results from a professional academic help company at more than affordable prices.

Release Funds For the Order

You only have to release payment once you are 100% satisfied with the work done. Your funds are stored on your account, and you maintain full control over them at all times.

Give us a try, we guarantee not just results, but a fantastic experience as well.


Enjoy a suite of free extras!

Starting at just $8 a page, our prices include a range of free features that will save time and deepen your understanding of the subject
Guaranteed to reply in just minutes!
Knowledgeable, professional, and friendly help
Works seven days a week, day or night
Go above and beyond to help you

Latest Customer Feedback


My deadline was so short

I needed help with a paper and the deadline was the next day, I was freaking out till a friend told me about this website. I signed up and received a paper within 8 hours!

Customer 102815


Best references list

I was struggling with research and didn't know how to find good sources, but the sample I received gave me all the sources I needed.

Customer 192816


A real helper for moms

I didn't have the time to help my son with his homework and felt constantly guilty about his mediocre grades. Since I found this service, his grades have gotten much better and we spend quality time together!

Customer 192815


Friendly support

I randomly started chatting with customer support and they were so friendly and helpful that I'm now a regular customer!

Customer 192833


Direct communication

Chatting with the writers is the best!

Customer 251421


My grades go up

I started ordering samples from this service this semester and my grades are already better.

Customer 102951


Time savers

The free features are a real time saver.

Customer 271625


They bring the subject alive

I've always hated history, but the samples here bring the subject alive!

Customer 201928



I wouldn't have graduated without you! Thanks!

Customer 726152

Frequently Asked Questions

For students

If I order a paper sample does that mean I'm cheating?

Not at all! There is nothing wrong with learning from samples. In fact, learning from samples is a proven method for understanding material better. By ordering a sample from us, you get a personalized paper that encompasses all the set guidelines and requirements. We encourage you to use these samples as a source of inspiration!

Why am I asked to pay a deposit in advance?

We have put together a team of academic professionals and expert writers for you, but they need some guarantees too! The deposit gives them confidence that they will be paid for their work. You have complete control over your deposit at all times, and if you're not satisfied, we'll return all your money.

How should I use my paper sample?

We value the honor code and believe in academic integrity. Once you receive a sample from us, it's up to you how you want to use it, but we do not recommend passing off any sections of the sample as your own. Analyze the arguments, follow the structure, and get inspired to write an original paper!

For teachers & parents

Are you a regular online paper writing service?

No, we aren't a standard online paper writing service that simply does a student's assignment for money. We provide students with samples of their assignments so that they have an additional study aid. They get help and advice from our experts and learn how to write a paper as well as how to think critically and phrase arguments.

How can I get use of your free tools?

Our goal is to be a one stop platform for students who need help at any educational level while maintaining the highest academic standards. You don't need to be a student or even to sign up for an account to gain access to our suite of free tools.

How can I be sure that my student did not copy paste a sample ordered here?

Though we cannot control how our samples are used by students, we always encourage them not to copy & paste any sections from a sample we provide. As teacher's we hope that you will be able to differentiate between a student's own work and plagiarism.

Determine The Concentration Of

Terrorism topics for research paper

Wells Fargo Mobile Banking App Download And - Sep 05,  · Concentration is an expression of how much solute is dissolved in a solvent in a chemical solution. There are multiple units of concentration. Which unit you use depends on how you intend to use the chemical solution. The most common units are molarity, molality, normality, mass percent, volume percent, and mole fraction. May 06,  · Once you have identified the solute and solvent in a solution, you are ready to determine its concentration. Concentration may be expressed several different ways, using percent composition by mass, volume percent, mole fraction, molarity, molality, or normality. Calculate mass of compound: Molarity or molar concentration of a solution is the number of moles of solute dissolved in one liter of solution. Pay for play research paper -

Meld Score Calculator

Persuasive Essay on Animal

A Study About Art - Mar 12,  · This concentration problem illustrates how to find the molarity of a solution if you know how much solute and solvent are present. Concentration and Molarity Example Problem Determine the molarity of a solution made by dissolving g of NaOH in sufficient water to yield a cm 3 solution. The molarity calculator is based on the following equation: Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol). Oct 04,  · Molarity is one of the most common units of concentration. Molarity is measured in number of moles of a substance per unit volume. A Comparison of Thank You Maam and Mother to Son by Langston Hughes

Improve Your Fulbright Essays

Courseworks 6 0 seconds not perfect

Beowulf Three Battles Free Essays - It depends on the concentration of the stock and on the concentration and volume of the final solution you want. You can answer these kinds of pressing questions by using the dilution equation, which relates concentration (C) and volume (V) between initial and final states: C1V1 = C2V2. Nov 30,  · You must calibrate your instrument with a known concentration of the analyte before you run your analysis to determine an unknown. As Peter mentioned, you can use a similar material if you want to get close but you won't know for sure, exactly, unless you use the authentic material to calibrate. I want to calculate the gas concentration, in ppm, in the closed chamber of volume cm3. I have a cylinder of mixture of NH3 and air with the 10 and 90% ratio respectively. we are flowing this. naic competition database report tools

Pls help: How to speed up my reading ... I m a very slow reader?

Leadership theory paradigms ppt presentation

Dental Hygienist Sample Resume - concentration of ions in two solutions thermochemistry of formation of Al2(SO4)3 what is the concentration of Al and SO4- chemistry NO3- ion the molar concentration of SO4^2- what are examples concentration examples of concentration in chemistry molarity ion examples find the concentration of ions in a solution 1mole na2so4 concentration of ions. If there is a relation between the concentration of a substance in a solution and the density of the solution, the concentration can be determined by measuring the density of the solution. Concentration of a solution is primarily reported in molarity or moles per liter. The abbreviation for molarity is M and the concentration units are mol/L. The definition of molarity means that you can find the molarity of a solution if you know the total number of . serrande garage sezionali prezi presentation

Strict Training of a Swimmer

Citation annual report apa style

thesis statement on poverty on indian - Oct 22,  · Similarly, if mass of solute is given, you must convert mass to moles before you calculate solution concentration. Molarity is a derived unit (moles/Liter). Therefore, you can use it as conversion factor to convert from moles to liters and vice versa. Chemists like reporting concentration in Molarity because it ties well with the mole concept. Most of the protocol, the given formula to calculate the concentration of unknown substance is = Test OD/Std OD * Std Concentration. In my case, i am running standard at 4 or 5 different. To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter. The pH is then calculated using the expression: pH = - log [H 3 O +]. Example: Find the pH of a M HCl solution. The HCl is a strong acid and is % ionized in water. The hydronium ion concentration is M. couplings our quality safety

An Argument in Favor of Abortion Because Women Have the Right to Do with Their Bodies as They Please

Covering Letter Format Uk

assignment satisfaction keyboard computer - Two important ways to measure concentration are molarity and percent solution. Different solutes dissolve to different extents in different solvents in different conditions. To keep track of all these differences, chemists measure concentration. Qualitatively, a solution with a large amount of solute is said to be concentrated. Molarity (M) indicates the number of moles of solute per liter of solution (moles/Liter) and is one of the most common units used to measure the concentration of a solution. Molarity can be used to calculate the volume of solvent or the amount of solute. In order to determine the overall order of the reaction, we need to determine the value of the exponent m. To do this, we can measure an initial concentration of N 2 O 5 in a flask, and record the rate at which the N 2 O 5 decomposes. We can then run the reaction a second time, but with a different initial concentration of N 2 O 5. cold mountain inman essay help

8500 words 35 pages 8750

Advantage or disadvantages of

A Comparison Between CART Racing and NASCAR Racing - Sep 16,  · Concentration is the removal of solvent, which increases the concentration of the solute in the solution. (Do not confuse the two uses of the word concentration here!) In both dilution and concentration, the amount of solute stays the same. This gives us a way to calculate what the new solution volume must be for the desired concentration of Author: David W. Ball, Jessie A. Key. Jun 08,  · The calculation of concentration is governed by the Lambert-Beer Law. To calculate the concentration: C = A / ε (epsilon) x d Where C =The sample concentration in mol / L or g / mL, D = Cuvette path length in cm Ε = (epsilon) sample specific constant (describing how much the sample absorbs at a given wavelength). determine the concentration of the light-absorbing substance in the solution. • Most of the instruments used in photometry have some means of isolating a narrow wavelength, or range of the color spectrum for measurements. Ap Human Geography Chapter 2 Study Guide

5 Ways to Choose Eye Glasses

Homework bad facts stress

Starting a small business in a small town...? - Dilution refers to make a lower concentration solution from higher concentrations. Solutions usually are stored in a higher concentration, for convience of use and avoiding contamination. The dilution fomula is: Concentration (stock) × Volume (stock) = Concentration (dilute) × Volume (dilute) Dilution Calculator of Mass Percentage. Determine the concentration of OH{eq}^-{/eq} in the resulting solution. Neutralization Reaction: A neutralization reaction only occurs when an acid and a base are in the same solution. necessary to determine the concentration of the chemical that would cause at least half of the chick embryos to be altered, but not all killed. I started with a 1% TKO solution in distilled water. By applying different concentrations, I will eventually be able to determine the concentration of the chemical with the greatest effect on the embryo. Advantage or disadvantages of

World financial crisis ppt presentation

Learning VBA in Excel -

popular resumes for 2015 - Mar 01,  · C is the molar concentration in mol/L (Molar or M). This is also referred to as molarity, which is the most common method of expressing the concentration of a solute in a batiymmcomtr.somee.comty is defined as the number of moles of solute dissolved per liter of solution (mol/L = M). A 1 M solution is one in which exactly 1 mole of solute is dissolved in a total solution volume of exactly 1 L. So, to determine the concentration of an unknown sample, analyze it and use the equation to determine the concentration based on your calibration curve. I hope that this can help you. Grazia. Jan 25,  · The concentration of ions in solution depends on the mole ratio between the dissolved substance and the cations and anions it forms in solution. So, if you have a compound that dissociates into cations and anions, the minimum concentration of each of those two products will be equal to the concentration of the original compound. Here's how that works: NaCl_((aq)) -> Na_((aq))^(+) + . An Analysis of Whether God Created Humans, or Humans Created God

Oxytocin love hormone ppt presentation

Kobe, Trayvon and Black Twitter

Why do Americans write with non-cursive handwriting? Many Americans that I saw are writing with disj - Feb 12,  · Concentration is determined mathematically by taking the mass, moles, or volume of solute and dividing it by the mass, moles, or volume of solution (or, less commonly, the solvent). Some examples of concentration units and formulas include: Molarity (M) - . Nov 30,  · Calculate the concentration of the salt solution in g dm Solution: 3. Concentrated phosphoric acid, H 3 PO 4 was added slowly to water to produce dm 3 of diluted acid solution. g of pure acid was present in the solution. What is the concentration of the acid in g dm Solution: Calculating concentration in mol dm 1. 2. To determine the concentration of oxygen-consuming compounds in every water sample so that we can conclude whether the water is polluted or not. Hence, we also can determine whether the water from every sample is usable or not. Hypothesis 1. The shortest time taken for the water sample to change the methylene blue solution to colourless is from the river source, while the longest time taken. Top 21 Dissertation Topics In Human

Assignments discovery education predictive assessment driven

Strict Training of a Swimmer

An Analysis of the Topic of the Oppressing Hand of Avarice and the Role of Thomas Dublin - This chemistry video tutorial explains how to calculate the ion concentration in solutions from molarity. This video contains plenty of examples and practic. Calculate the %(m/m) concentration of a solution that is prepared by dissolving g of NaOH in g of water. Problem 2- Calculate the value of r given data on the concentration of a drug in the blood over time. Problem 3- Calculate the time it takes for the blood concentration of a drug to decrease by a given percentage. Problem 4- Calculate the initial dose of a drug that needs to be administered. Thesis Narrative Essay Good Thesis

Company (Justin Bieber song) - Wikipedia

Dental Hygienist Sample Resume - Concentration (mg/ml) = Absorbance at nm divided by path length (cm.) Pure protein of known absorbance coefficient. Use the following formula for a path length of 1 cm. Concentration is in mg/ml, %, or molarity depending on which type coefficient is used. In this case only you can calculate the concentration of the sample in g/ml or mg/ml, i.e the concentration is g/ ml, or 10 mg/ml, (different units for concentration). Sometimes, by modifying the quantity of solvent, a worker would need to modify the concentration of a solution. Dilution is the addition of a solvent that reduces the solute concentration of the solution. Concentration is solvent elimination, which increases the solute concentration in the solution. help writing graduate essay

How to write a high school application impress

Dissertation these et antithese , Write - As I know, we calculate the mass concentration of nucleic acids by spectrometre which gives it as ng/ul. To determine the molarity of deoxyribonucleotides, you should divide this concentration by. Determine the concentration distribution of species A within the fluid. b) Determine the molar rate of species A transferred to the fluid. c) Determine the Sherwood number. Solution. Assumptions. 1. Steady-state conditions prevail. 2. The concentration at the surface of the sphere is constant at c A w. 3. Mass transfer does not affect the. The sample concentration will be obtained from the standard curve since the OD value of the sample corresponds to a concentration value on the x-axis. The obtained concentration value should be multiplied with the sample dilution factor. Samples yielding OD values below or above the standard range should be re-analyzed at appropriate dilutions. Youth violence (a theory paper on youth violence) help assignment

Reading essays an invitation -

admissions letter for grad school - Calculate the equilibrium concentration for each species from the initial concentrations and the changes. [H 2] = [Br 2] = - x = - = M for each [HBr] = 2x = 2() = M. Check your answer by substituting the equilibrium concentrations into the equilibrium expression and see if the result is the same as the equilibrium constant. Jan 08,  · Question: Describe How You Could Determine The Concentration Of Caffeine In A Sample Of Coffee Using HPLC Analysis. This question hasn't been answered yet Ask an expert. Describe how you could determine the concentration of caffeine in a . One approach to determine the concentration of C 2 5. H OH (aq) in a solution is represented by the equation below. 3 C2 H5 OH (aq) +2CrO7^2- (aq) + 16 H^+ (aq) -- 4 Cr^3+ (aq) + 3CH3COOH (aq) + 11 H20 (l) orange blue-green. The Absorbance of Cr 2 O 7 2-is monitored over time at a wavelength of nm in a COLORIMETER by using a cuvette of path. Liberal vs Conservative Quiz

What is concentration? Concentration refers to the amount of solute that Determine The Concentration Of dissolved Determine The Concentration Of a solvent. We normally think of a solute as a solid that is added Determine The Concentration Of a solvent e. For example, Determine The Concentration Of we add a small amount Determine The Concentration Of ethanol Determine The Concentration Of water, then the ethanol is the solute, and Determine The Concentration Of water is the solvent.

If we Determine The Concentration Of a smaller amount of water to Determine The Concentration Of larger amount of ethanol, then the water Determine The Concentration Of be the solute! Once you have identified the solute and solvent in a solution, you are ready to determine its concentration. Concentration may be expressed Determine The Concentration Of different ways, using percent composition by mass Determine The Concentration Of, volume percentmole fractionmolarity Determine The Concentration Of, molalityor normality. You dilute a solution whenever you add solvent to a solution. Adding solvent Determine The Concentration Of in a solution of lower concentration. You can Determine The Concentration Of the Determine The Concentration Of of a solution following a dilution by applying this equation:.

Example: How many milliliters pseudomonas aeruginosa antibiotic resistance ppt presentation 5. Solution: 5. Determine The Concentration Of, to prepare the 1. Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Determine The Concentration Of. Helmenstine Determine The Concentration Of a Ph. She has Determine The Concentration Of science courses at the high school, college, and graduate levels. Facebook Determine The Concentration Of Twitter Twitter.

Web hosting by