Molar Reports Samples For Students

Research Question

The effect of increasing the concentration of two reactants, i.e. Calcium Chloride solution and Sodium Carbonate solution, on the percentage yield of Calcium Carbonate is to be studied in this experiment. The efficiency analysis for the production of Calcium Carbonate (also known as chalk) is to be carried out.
The dependent variable in this experiment is the percentage yield of Calcium Carbonate, expressed as percentage (%). The independent variable is the concentration of the reactants, i.e. Calcium Chloride solution and Sodium Carbonate solution. The concentrations are expressed in moles/liter or moles/dm3. While the control variable is the mass of the ...

Re: A column to separate an Acetone-Methanol mixture

The objective of the project was to optimize the design of a column used to process a supply stream containing 35 percent acetone at 30oC. The optimized design should turn out a distillate product containing 0.75 mole fraction of acetone and 0.0010 fraction of bottoms acetone. The outcome of the experiment produced a distillate product containing 0.0079 molar fraction of acetone.

The molar fraction of acetone in the first inlet stream was determined to be 0.14 lbmol/min. Also, the total flow rate of the second inlet stream and the total gas flow rate were determined to be 61.84 lbmoles/min ...

Introduction

Using membrane for gas separation by numerous industries and fields is highly associated with easy operability, low energy costs, light weight and compactness of the process.

Organizational need

There is an organizational need by Learning Curve Consultants’ client to generate relatively pure nitrogen and oxygen gasses within the organization for the application in various processes through the use of high-pressure air as feed. The client has the need to investigate the possibility of employing the use of polymer membranes to produce both nitrogen and oxygen gasses. As a consequence, the customer has presented the team with two bench scale gas membrane ...

Abstract

In this experiment, two calorimeters were designed and assembled. One was made using Styrofoam cups and another one using glass and foil. The calorimeters were studied for their performance in keeping the heat of the system. They were studied by measuring the heat loss of hot water over time. The heat lost in each calorimeter over 30 minutes was calculated. The calorimeter made of glass worked better and less heat was lost in it. The assembled calorimeters were used to find out the heat of reaction between NaOH and HCl per one mole of water. This value was found ...

Introduction

Substances vary from one another in the amount of heat needed to produce a rise in temperature in a given quantity of gas. The quantity of heat needed to change the temperature of a system is proportional to the mass of that system as well as the change of temperature. This is expressed as where Q is the amount of heat required, m is the mass of the system, c is the specific heat, and is a change in temperature. The values of specific heat depend on some extend of temperature. In small temperatures, the specific heat is considered ...

In the first part of the experiment, approximately 2 g of zinc and 2 g of iodine were weighed into two separate weighing boats. In the actual weighing, the accurate masses of the zinc and the iodine were 1 8885 g and 2.399 g, respectively. Next, a clean and dry 125 mL Erlenmeyer flask was weighed. When the flask was empty, it weighed 95.9610 g. Afterwards, when the initially weighed zinc and iodine were added, the flask and its contents weighed 100.120 g. Five mL of vinegar (an acid) was then added into the same flask for the desired ...

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Introduction and Literature Review

The value for a drug is significantly impacted by the dissolution rate, chemical stability and solubility of the drugs thereby impacting the pharmaceuticals efficiency as well. In the pharmaceutical industry multi-component crystals such as hydrates, solvates, co-crystals and salts have a major role during the design of new solids. Solid does not self-crystallize. It crystallizes in varied forms depicting random crystal properties. Various approaches are used to modify solids like Salting, Solvation, Hydration, and Polymorphism. Apart from these approaches, Co-Crystallization is a promising new approach to modifying solids (Nauha, ...

The main aim of the experiment is to prepare cyclohexanol by an acid catalyzed reaction of hydrocarbon compound like cyclohexene. Water is majorly used as a solvent in the experiment and with this, it is believed to be the highest in ratio when considering the nucleophile that attracts the carbon compounds.
- For cyclohexeneC6H10, the mass = 8.5g;
Molar mass is =82.143g/mol
Moles of cyclohexene =mass of the cyclohexene measured (g)molar mass of the cyclohexene
=8.582.143
=0.1035mol
For H2SO4 used, the number of moles is given by; volume used=8.2mL
Given that; 1L=1000mL
Ɂ ...

The heat of capacity is usually a positive sign and hence the value for the heat capacity of the calorimeter can be given as 23.4 ± 0.1 J/OC.

Sample for the Calculations Using Trial #1

The weight of cold water was calculated by getting the difference between the weight of the calorimeter together with cold water and the weight of calorimeter as follows
Weight of cold water=51.7g-3.3g
=48.4 grams

The weight of hot water was calculated as follows

=Final weight of calorimeter + water -Weight of calorimeter + cold water
=100.4 g-51.7 g
=48.7 grams

The heat lost by hot water was calculated as follows

heat lost=heat capacity of water ×change in temperature×wight of hot water
=4.18 Jg-1℃-1×48.7 g×7.3 ℃
...

Aims and Objectives of the Experiment

This experiment aims at studying the characteristics of titrations with the strength of different acids used in these titrations. This is done by drawing the titration curves of the different titrations that are carried out in this experiment and interpreting those curves. The units of measurement for this experiment are the standard units that are used in titrations. These are molarity (moles/liter) of substances while the quantities are measured in mL (milliliter).

Theory and Principles

Conductometry is a type of electroanalytical method in analytical chemistry. While other electroanalytical methods use equilibria or electrodes, conductometry is different and employs the conductance of materials ...

The objective of this experiment was to prepare Beer-Lambert calibration curves for different forms of nitrogen and to determine the concentration of nitrate, nitrite, and ammonia ions in different water samples from the Biscayne Bay.

Introduction

Nitrogen is the most abundant element in the Earth atmosphere. In is not surprising that it is one of the most crucial elements not only to human life but all life on our planet. The chemistry of nitrogen is rather diverse because it can exist in different oxidation levels – from +3 to -5. Due to its large impact on the biosphere, the circulation of ...

ID Information: Last Name, First Name, date, Locker #, Course/Section #, lab partner’s name

The purpose of the experiment is to study the density of unknown solutions of different concentrations.

References:

Suzanne Slayden, 2015, Chemistry 211, 212, 251 Laboratory Experiments, 6th Edition, GMU Bookstore, Johnson Center, page 35 - 45
Materials and Chemicals:
The materials required for the experiment are:
10ml volumetric flask
Electronic gram scale
A solution which is unknown
3M NaCl solution
Procedure:
The procedure of the experiment is as follows: (Suzanne, 2015)
A clean and dry 10.00 ml volumetric flask with a stopper was weighed on an electronic ...

Purpose:

The purpose of this experiment is to determine the chemical formula. Here the chemical formula will be determined from the oxide of the metal. The metal is to be identified from the given mass.

Calculation:

Mass of crucible, lid and metal are given to be 38.834 gram whereas the mass of crucial and lid are 37.933 gram and 37.938 gram respectively. Hence it can be said that the constant mass of crucible and lid is 37.936 gram. Hence, the mass of the metal which is used can calculated as
(38.834 - 37.936) gram=0.898 gram.
After the first heating the mass ...

Executive summary

This experiment seeks to compute the overall mass transfer coefficients for nitrogen gas and oxygen gas via a polymer membrane under different experimental conditions. The calculation of the overall mass transfer coefficient of the gasses will aid in establishing how the permeability of the polymer membrane is affected by altering these conditions. The experiment employs the calculation of the separation factor in determining the efficiency of a membrane in separating oxygen gas from nitrogen gas. It uses the measured values of flow rates, exit streams and flow rate composition of the membrane component to calculate the mass transfer coefficients. ...

AIMS AND OBJECTIVES

INTRODUCTION
Titration is a volumetric analysis used to determine the quantity and concentration of an unknown or known substance. Redox titration involves the use of reducing and oxidising agents as the reactants. Some redox reactions can be performed without necessarily adding an indicator since the reagents used change in colour at the end point: they are self-indicating.
Potassium iodate is an ionic compound whose molecule is made of the atoms of potassium, iodine, and oxygen. Its chemical formula is KIO3 and its mass number is 214 g mol-1 (Clark, 2000, P. 79). It is also a strong oxidising agent hence ...

A
When water is added to lead chloride, the solute sparingly dissolves with some undisclosed particles settling at the bottom of the beaker. Lead chloride is only sparingly soluble in water. When the dilute hydrochloric acid is added to the saturated solution of lead chloride, a white precipitate is formed. This is because of the common ion effect where the excess chloride ions from HCL cause lead chloride to precipitate.
Pb2+ aq + 2Cl-aq PbCl2 s
B
0.1M lead nitrate +0.1M sodium oxalate

Ionic Equations:

Pb2+ (aq) +C2O42- (aq) PbC2O4(s)
Na+ (aq) + NO3-(a) NaNO3 (aq)
Lead ...

Introduction:

Coke has become so popular that the drink is replacing healthy beverages in people’s diets around the world. (1, 2) Phosphoric acid is one of the ingredients in the colas that should only be consumed in moderation. The food industry calls the acid used to lower the pH of a food or beverage an acidulant. (3) Phosphoric acid is a food additive under the category of acidulant. (4) It adds “a pleasant tartness to the beverage.” (5) The food industry uses phosphoric acid a lot, “It is added to foods as a preservative, acidifying agent, flavor enhancer, and clarifying agent.” (6)
An ...

In all three versions of the hominid family tree, there are a number of similarities. Each tree must have an evolutionary origin and purpose and whilst the origin does seem to differ from tree to tree, the purpose seems to maintain a constant: Homo Sapiens are always the end point on each tree. Presumably, this is because our species has evolved this far to date and appears to have stayed still for about 200,000 years (Human Origins) whereas another site states 175,000 years (Becoming Human), and another states 100,000 years (PBS). This dispute is commonplace as we are ...