Top Loader Balances
The 50 ML beaker was cleaned and dried. We cleaned and dried the coins making sure
not to touch them after they were cleaned. We put all four coins, into the beaker. We
weighed them accur
There are a simple formula to show the number of atoms of each elements in compound, and the
name of the formula is empirical formula or molecular formula this will help us to find how
many moles in the elements to make it balanced.
The measurement of coins have different mass or data from penny, nickel, dime, and quarter. The
study we did in the lab was to find out the mass of each coins by using the Analytical Balance
technique, this technique was willing to h
This experiment will teach us that the mass and the volume of the objects, could have a different
densities that will change to a different numbers of weights. This experiment will also shows no
matter what kind of the objects (solid or liquid) s
This experiment will help us to find out the differentiation of the weight by the empirical
formula, it is also helping us to find the actual elements by separating them out and weight each
one. There is also a molecular formula for the compound
Physical and chemical changes are the way to see how the materials would be able to transform
from solid to liquid, from liquid to solidetc. not only that will change the physical, but also
chemical, and some of the experiment that we have n
The goal of this experiment is to separate the different of the pigment of the ink of the marker.
Chromatography is a technique of identifying the various components of the mixture, which will
help us to attract the stationary phase to see the di
This experiment will show us how much color our daily food has, and it will also make us to
match the unknown drink to our red dye color. It will also show us how many time to match the
color what we want by repeating and getting more measure.
Water is the most important for most of human being, animals, and plants. There are many ways
to determine if the water is good to drink or not, for example the different color between the
drinking water and the river which we call this way
This experiment will show us what the solutes and solvents, it will happen to give us a total
different solution. It is also going to show us how the shape could possibly effect the solubility of
any elements, or the temperatures could might effe
This experiment will show us how important to know about digest food, and to process the
metabolism to get the energy enough for our daily bases. The food calories that we are getting
from our food is our fluid to keep us moving. The main point o
This experiment will help us to determine the amount of an unknown sample by using titration
method. Titration is the process of adding a reagent solution of known concentration (the titrant)
to an unknown until all of the substance of interest i
This experiment will show us how to make a natural soap by using the head/ cooling techniques,
and dissolve all the necessary chemical materials (Sodium hydroxide, fat, ethanol, salt, and
water). We are going to see the differences when the mater
TWA: TLV-TWA = (C1T1 + C2T2 + + CnTn)/8
Concentration values based on average of two values in timeframe (e.g: (185+240)/2 =
212.5). Time value is determined as time period between two averaged concentrations.
Based on thes
Homework Assignment #1
Assume the employee works 2,000 hours per year (40 hr/wk * 50 weeks):
FAR = (1/500) X 10^8)/(2000 hr/yr) = 100
Fatality Rate = (1/500)/1 = .002
Both of these values are much higher than accepted values for a chemi
Acids, Bases, and Buffers
Acetic acid is a weak acid and should be treated with sand and soda when spilled.
Hydrochloric acid is a strong acid and extremely corrosive and should not be inhaled.
Sodium hydroxide wil
February 10, 2014
U2/alpha*gc + gz/gc + F = -Ws/m (Assume the change in pressure = 0 & assume turbulent flow)
Z = 6.2 m (4.1 m to bottom of tank + 2.1 m below tank)
Ws = 2 kW(0.5)(1000 J/s kW)(1 second) = 1000 J
m = density*
February 4, 2014
Texas City: What Can We Learn?
On March 23, 2005, an explosion at the BP Texas City oil refinery claimed the lives of fifteen
workers and injured more than 170 others. The accident was a tragic example of what can happen wh
1. Is any intentional chemistry done at your facility? NO. Only blending is intended to occur.
2. Any mixing of combining of substances? YES. Sodium hydrosulfite, aluminum and potassium
carbonate are mixed together.
3. Heat g
One of the topics covered in the video that has been mentioned in class is inherent safety. The
video mentioned on multiple occasions how the design of certain industries can create additional
combustible dust hazards. For exam
Flash point of Methanol = 11oC = 284 K
Using Antoine Equation, ln PSAT = 18.5875 (3626.55/(284-34.29) PSAT = 58.23 mm Hg
50% methanol P = PiSAT/xi = 58.23/0.5 = 116.46 mm Hg
Solve for T using Antoine Equation again:
An incident occurred at the Honeywell refrigerant manufacturing plant in Baton Rouge, Louisiana on July
20, 2003. A leak occurred due to corroded pipes released chlorine gas into a system not built for
chlorine properties. The chlorine spread
Based on the information provided, use class A-B for sigma measurements.
Using Table 5-2, with x = 200 m, sigma(y) = 43.57 m and sigma(z) = 40 m
Since y = z = 0, use Equation 5-51:
C = 5 x 10-5 = Qm/pi*sigma(y)sigm
This experiment will show us the different between Acids and bases, and the way to find out
which one is the acid and base. The acid is then substance that contains a hydrogen ion or reacts
with base, and base is a material that contains with hyd