What is the difference between luminous flame and non-luminous flame? The luminous flame is a yellow, orange, and bright flame. The non-luminous flame is a blue, purple, and dark flame. The non-luminous flame is a type of flame that is undergoing almost complete combustion.
What is the cause of the difference? The cause of the difference is the quantity of oxygen that is mixed with gas. In other words, the quantity of oxygen will determine whether the combustion is complete or not complete.
Which flame is the one that we normally use in the lab? Explain. We normally use the
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Calculate the mass of sodium chloride/sand mixture from Part II. Show all work with units and significant figures. The mass of sand mixture is 0.97 g. Work: 1.71 g - 0.74 g = 0.97 g
Explain the difference between decanting and filtration.(see procedures) The difference between decanting and filtration is that decanting is the process where you would pour the liquid out of the container to leave the solid behind. . Filtration is where you would use a medium or a filter paper to separate the solid and liquid.
What chemicals (substances) are in the filtrate?hOw do you know by your observations? The substances in the filtrate are distilled water and salt. Based on my observations, I saw liquid which i determined to be the water and I saw foggy and light gray liquid which I determined to be caused by the salt.
a) Calculate the final mass of the sand in the filter paper form Part III. Show work w/units and
The mass of Mg + the mass of O2=mass of MgxOx. Knowing the mass of
4. A) The functions for the problem would look like p=800*0.95*t and 0=50*1.15*t. P represents the pine
...rown puts it “Each of us is born with a box of matches inside us but we can't strike them all by ourselves; we need oxygen and a candle to help” (Esquivel 115), in Tita’s case the candle was an actual candle and the fire took the form of real fire, in order to bring the extended metaphor or fire and matches as a symbolic representation of the soul to a magical and passionate climax. Esquivel uses fire to symbolically represent passion and love, which in just like fire, is not without negative effects. Passion and love can be used as a tool of spite, as it was by the ghost of Mama Elena or it can be pure bliss. Either way, the exaggeration of the attributes and pivotal role of fire as the driving force of life illustrate a deeper truth about the dualistic nature of passion.
Sitting by a fire on a fall night one would not think of a campfire as cold light. Could there be such a thing? “Cold light” is what the word luminescence means (Fluorescent Mineral Society, 1 of 2). Cold light can be seen at many different temperatures. Not only does cold light exist, but there are several types of luminescence including bioluminescence or “living light”, photoluminescence or fluorescence, “day-glow”, and phosphorescence which is delayed luminescence or “afterglow” (Fluorescent Mineral Society, 1 of 2). Chemiluminescence is when two or more chemicals mix and react to create light energy.
In this experiment, we will measure the mass of a magnesium strip before burning it, and then the mass of the compound left after combustion. Presuming that all the mass added is entirely oxygen, we can find the amount of oxygen which all the magnesium has combined with by subtracting the mass of the original magnesium strip from the mass of the white powdery substance formed after combustion.
Reaction 2: H = 50 x 4.18 x -10.3" H = -2152.7 This value is for 1.37g of calcium oxide, not 56.1g, which is its relative molecular mass. Therefore: H =
Mass of KClO3 = Mass of crucible, cover and KClO3 (Step # 3) - Mass of crucible and cover (Step # 1)
find the rate I have to find the mass change in 1 hour, and I will
One of the best methods for determining mass in chemistry is gravimetric analysis (Lab Handout). It is essentially using the the mass of the product to figure out the original mass that we are looking for. Thus the purpose of our experiment was to compare the final mass in our reaction to the initial mass and determine the change in mass.
clouds were gray, the roads were slick due to a recent rainfall and there was
No. of moles of KHP = Mass of KHP used / Molar mass = 0.41 g
Removal/ wasting of activated sludge during this stage if the amount of activated sludge presence in excess.
The hanger with appropriate amount of slotted mass was put on the tile. The sand is a sand. Use the balance to measure the total mass m. 4. What is the difference between a.. Sufficient length of string was attached to the hanger so that the free end wraps around the axle of the flywheel.
Investigating the Effect of Drop Height on the Depth of Sand Aim: To investigate the depth of the sand depending on the height at which the ball is dropped from. Variables: Independent variable chosen: The height at which the ball is dropped Dependent variable chosen: The depth of the sand after removing the fallen ball from it. Constant variables and how they will be controlled: Variable How we will keep it constant Amount of sand We leave the sand in the bucket and make sure that none spills over. Type of sand Use the same one for each trials Ball Use the same ball for each trial, with the same size, volume, material and brand.
often done by electrical discharge in a pure gas - or gas mixture - in a tube.