Flame Rate Lab Report

For the test tube with the ratio of Acetylene to air is 1:3, a flame traveled down a test tube even slower, there was a slight popping noise and black residue . For the test tube with the ratio of Acetylene to air is 1:7, a flame traveled quickly down a test tube, popping noise and less black residue. Refer to table 1 for the specific lab results.

Submitted by: Blossom Okpali Sumitted to: Mrs. Chui Course Code: SNC 1D Group members: Joy, Paulina and Christina Date assigned: March 27 2018 Due Date: April 6th 2018 Introdution: The flame test is used to help miners, geologists, and chemists identify the presence of chemical elements. They can be used to distnguish unknown metallic and metalloid ions, The heat from the flame excites the electrons of the metals ions, causing them to emit light. Every element has an emission that can be used to differentiate between one element and another.

Smoldering (glowing) combustion The absence of flames with the presence of hot materials in the surface where oxygen diffuses into the surface of the fuel.

The heat of combustion in kJ was -8.372, (Index 1). The heat of combustion in □(kJ/g) is found by (n∆H°rxn)/(mass of fuel burned) , is -20.93□(kJ/g) (Index 1). The heat of combustion in □(kJ/mol) which is found by (n∆H°rxn)/(number of moles), is -5912.4 □(kJ/mol) (Index 1).

The purpose of this lab is to find the molar mass of mixed gases in a lighter, and to calculate the exact mixture of gases in the lighter. The results of this lab were the mass of the lighter, as 100 mL of water was displaced, was 0.27g, 0.17g, and 0.28g. The molar masses of the gasses for three trials were 64.3 g/mol, 40.5 g/mol, and 66.7 g/mol.

During the spill when the gas is burning there will be a huge amount of carbon dioxide released into the air through dust and smoke. This smoke causes particles and gasses to enter into the atmosphere.

8. Make sure that you have familiarized yourself with the fire and emergency equipment in case of a hazardous situation.

The text stated that a result of hydrogen would a popping sound and condensation. The only factor which was present in the description that was not present during the experiment was the popping sound that was supposed to occur when hydrogen is ignited. This was likely caused by error in recording the results, or by incorrect procedure. Either way, it was proved that hydrogen was present by using other factors, such as water vapor. The text stated that a result of CO2 would by a white solid. During test “B”, a white solid appeared, confirming that Carbon dioxide was a gas produced. The text stated that oxygen can make fire more intense. During the test “A”, the glowing splint was reignited after it was inserted into the test tube. This proves that Oxygen was produced in this

In this experiment, we mixed different chemicals together to see what gases we could produce. The three different gases we ended up with were Oxygen which you get when you mix Manganese Dioxide & Hydrogen Peroxide together, Carbon dioxide which you get when you mix Hydrochloric acid and Baking Soda together, and Hydrogen which you get when you mix Hydrochloric acid and Mossy Zinc together. We did a burning and glowing splint test where we would bring a burning or glowing splint to the opening of the test tube to see how the gases reacted with the flame.

My hypothesis was if manufacturing guidelines are not followed it will dramatically affect the flame resistancy of the material. My hypothesis was supported by the data collected from the test results. I tested washing the flame resistant material as directed by the manufacturer. I also tested washing the flame resistant material not following the manufacturer’s guidelines. My results showed that following the manufacturer’s washing guidelines increased extinguish time and damage to the material. The first test showed an extinguish time of 1.99 seconds when following manufacturer’s guidelines. The first test not following manufacturer’s washing guidelines had an extinguish time of 3.13 seconds.

Smouldering is defined as a self-sustaining exothermic reaction in which the heat released by surface oxidation causes pyrolysis of the unaffected fuel adjacent to the reaction zone, which in turn yields a rigid char which will subsequently undergo surface oxidation citep{smith2006springer}. The initiation of furniture fires by weak heat sources, such as, a cigarette or a short-circuited wire, and the flaming combustion of biomass occurring in bushfires behind the flaming front are two common examples of smouldering combustion citep{rein2009smouldering}.\

Le Chatelier’s equation (equation 1) was used to estimate LFLCZ (volume%) of the flare which was limited to binary mixtures of combustible gases (Coward et al., 1919).

The rate flow of nebulized solution is also important parameter of the nebulized spray pyrolysis. If the flow rate is high, the substrate temperature will cooled. If the flow rate is very low solution not reaches the substrate. So the pressure should optimum to get better

Available information on decomposition of binder in general and AP in particular have been collected and reviewed from the viewpoint of their application in the composite propellant. This review may be useful in understanding the complicated mechanisms of the propellants combustion. When the chemical nature of either oxidizer or binder is changed then the propellant properties are drastically altered. It was known that the AP decomposition and deflagration represent very important role during the propellant combustion and the binder decomposition temperature is related to the propellant burning rate. Various investigations have shown that the additives which sensitize or desensitize decomposition of ammonium perchlorate either sensitize or desensitize its deflagration leading to burning rate increasing or decreasing. Those examples very clearly exhibit the

where H = height of the flame (m), d = diameter of the pool of liquid (m), m’ = mass transfer rate