# Percent Composition by Mass of Oxygen in Potassium Chlorate

Length: 359 words (1 double-spaced pages)

Rating: Excellent

#### Essay Preview

% Composition By Mass of Oxygen in Potassium Chlorate

Objective:

The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate.

Procedure:

1.The mass of the crucible and the cover was measured.

2.KClO3 was added to the crucible.

3.The mass of the crucible, cover and KClO3 was measured.

4.MnO2 was added in the crucible.

5.The mass of the crucible, cover, KClO3 and MnO2 was measured.

6.The Bunsen Burner was lit.

7.The covered crucible was placed over the flame of the Bunsen Burner using a ring stand.

8.The flame was waved under the crucible for 2 minutes.

9.The flame was placed directly under the crucible until hot and glowing.

10.The Bunsen Burner was turned off.

11.The mass of the covered crucible was measured once cooled.

Theory:

Mass of 2KClO3 - Mass of 2KCl = Mass of 3O2

Mass of KClO3 = Mass of crucible, cover and KClO3 (Step # 3) - Mass of crucible and cover (Step # 1)

Mass of O = Mass of crucible, cover, KClO3 and MnO2 after heating (Step # 11) - Mass of crucible, cover, KClO3 and MnO2 before heating (Step # 5)

% composition= __Mass of O_ x 100

Mass of KClO3

Data:

Mass of crucible and cover ~ 26.40g

Mass of crucible, cover and KClO3 ~ 28.59g

Mass of crucible, cover, KClO3 and MnO2 ~ 29.55g

Mass of crucible, cover, KClO3 and MnO2 after heating ~ 28.60g

Calculation:

Mass of KClO3: 28.59g - 26.40g = 2.19g

Mass of O2: 29.55g - 28.60g = 0.95g

% Composition by mass: _(29.55g-28.60g) x 100 = 43.40%

(28.59g-26.40g)

Theoretical: _
_(3x16g)____ x 100 = 39.2%

(39.1g + 35.5g + (3x16g)

.392 x (28.59g - 26.40g) = .859g

Discussion:

The % composition by mass of oxygen in Potassium Chlorate was found to be 43.4%.

The error analysis ~ _ç.

MLA Citation:
"Percent Composition by Mass of Oxygen in Potassium Chlorate." 123HelpMe.com. 04 Apr 2020
<https://www.123helpme.com/view.asp?id=108533>.

## Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

## Solubility of Potassium Chlorate Essay

- Solubility of Potassium Chlorate Solubility is the maximum amount of solid that will dissolve in 100g of solvent. The solubility of a substance depends on the type of ionic particles in it. So the solubility of each substance is different. The formula of solubility is: SOLUBILITY(g/100g)= (SOLUTE / SOLVENT) * 100 I did an experiment to prove this and find the solubility of potassium chlorate, an ionic solid. Apparatus: 2g potassium chlorates, some distilled water, a stand, a clamp, two beakers, a thermometer, a test tube, and a measuring cylinder....   [tags: Papers]

Free Essays
686 words (2 pages)

## Chemistry: Percent Composition Lab Introduction Essay

- Percent Composition Lab Introduction The percentage of something is very important in everyday life. For example, a farmer would want to know the percentage of nutrients in a fertilizer they are using. In spring, the farmer may want to use a fertilizer that has a high percentage of nitrogen, because it "greens” plants. In the fall, the farmer may want to use a fertilizer that has a higher percentage of potassium, because it strengthens the root systems of plants. A way to find the percentage of nutrients is by using percent composition....   [tags: fertilizer, potassium, molar mass]

Research Papers
1206 words (3.4 pages)

## A Stoichiometry Experiment Involving Potassium Chlorate Essay

- Introduction In any science that requires computation, specifically in Chemistry, gathering measurements of various physical and chemical properties need to be strictly accurate and precise for it is in this most crucial phase that either make or break the quality and value of science. No matter how good the experiment was performed, without forethought on how to gather and process data correctly, the collected information would not be reliable enough to draw out a conclusion on it. This experiment is divided into two parts, thus having dipartite objectives for the whole experiment....   [tags: Chemistry]

Free Essays
1258 words (3.6 pages)

## The Composition of Three Types of Seaweed Essay examples

- The proximate composition (protein, lipid, carbohydrate, ash and moisture) of three groups of seaweed; Green algae (Ulva lactuca and Enthromorpha intestinalis); Brown algae (Colpomenia sinuosa and Sargassum illicifolium) and Red algae (Gracilaria corticata and Hypnea valentiea) collected from the Persian Gulf coastal water were showed in table 1. Burtin, (2003) indicated that the protein content in brown algae generally is low (5-15% of the dry weight) compared with red and green algae (10-30% of dry weight), and the content also varies according to species and seasons cycle (Fleurence, 2004)....   [tags: seaweed, composition, science, experiments, ]

Research Papers
1768 words (5.1 pages)

## Essay on The Compositions of Erik Alfred Leslie Satie

- Erik Alfred Leslie Satie, born May 17th 1866 to Scottish born Jane Leslie Anton and Norman born Alfred Satie in Honfleur, France. Satie is a well-remembered figure of 20th Century composers and pianist, who had always described himself as “a medieval musician who had wandered by mistake into the 20th Century”(1). Satie had suffered family tragedies in his early childhood losing his mother, Jane, at the age of 6. He was sent to live with his grandparents in 1872, along with his siblings. When he lived with his grandparents he started his musical career....   [tags: Satie's Compositions]

Research Papers
2979 words (8.5 pages)

## Essay about The Most Effective Method of Losing Body Composition

- The Most Effective Method of Losing Body Composition Body composition is the true definition of an individual’s weight status. Scale weight alone does not necessarily mean that an individual is lean or fat compared to another individual. Lean mass (muscle) actually weighs more than fat tissue; therefore an individual with large amounts of lean mass will have an "elevated" scale weight while they are not over fat (Expert123, 2009). If an individual focus on losing weight and keep it off while at the same time trying to increase lean mass (muscle) it a much better way to lose weight and keep it off and the only way you can do it correctly is threw body composition analysis....   [tags: weight, mass, Subramanian, Insanity Fit Test]

Research Papers
1694 words (4.8 pages)

## Composition Music Theory Essay

- Composition music theory has a longing history of how it was brought up and the way it has evolved into new cultures. “Musical Composition, the act of conceiving a piece of music, the art of creating music, or the finished product. These meanings are interdependent and presume a tradition in which musical works exist as repeatable entities. In this sense, composition is necessarily distinct from improvisation.” (Crossley-Holland, Peter) Composition music theory is the study of which you learn to write and develop a creative ability to compose....   [tags: Music, Musical notation, Musical composition]

Research Papers
1977 words (5.6 pages)

## Essay on The Solubility of Potassium Nitrate

- The Solubility of Potassium Nitrate Aim To investigate how the solubility of Potassium Nitrate is affected by Temperature. Background Knowledge Potassium Nitrate (KNO3) is an ionic compound. The strong ionic bonds hold the compound in an ionic lattice which gives KNO3 its crystalline structure. These ionic bonds also have other properties which will affect my investigation, I must be aware of these properties for greater accuracy in my method. The ionic bonds give KNO3 high melting and boiling temperatures....   [tags: Papers]

Free Essays
1245 words (3.6 pages)

## Essay on Potassium

- Potassium Potassium is a vital element in the human body. Potassium had never been distinguished between sodium until the eighteenth century. Before potassium was recognized as an element, potassium carbonate was mixed with animal fat to make soap. It was discovered by Sir Humphrey Davy in England, in 1807. Sir Davy was able to isolate potassium using electrolysis. Potassium was the first metal isolated by this procedure. Today, it is still not found free in nature. It is obtained by electrolysis of chloride or hydroxide....   [tags: essays research papers fc]

Free Essays
633 words (1.8 pages)

## Body Composition Essay

- According to Mosbey's Medical, Nursing, & Allied Health Dictionary, Body Composition is defined as the relative proportions of protein, fat, water, and mineral components in the body. It varies as a result of differences in body density and degree of obesity. Basically body composition describes the percentages of fat, bone, and muscle in a persons body. The percentages of body fat a person has determines their overall health and fitness when compared to factors like age, weight, and sex. Body composition also contributes to a persons overall appearance....   [tags: essays research papers]

Free Essays
385 words (1.1 pages)

### Popular Essays

859g - 0.95gç x 100 = 10.6%

.859g

The error analysis was found by calculating the theoretical percent composition using the theoretical mass of oxygen and potassium chlorate. That percent was multiplied by the mass of KClO3 used in the experiment to find the theoretical mass of oxygen. The theoretical mass of oxygen was used with the experimental mass of oxygen to calculate the error analysis. MnO2 was used in this experiment as a catalyst. During the cooling period the cover of the crucible was removed which could have affected the final mass of the crucible, cover, KClO3 and MnO2 because some of the compound could have fallen off the cover and onto the lab table. The data could then be inaccurate. Next time the cover should be kept on until after the final measurement of mass is taken.