Essays Tagged: "cm3"

Bromine: History and Study

number of protons I have. I weigh a mere 79.904 atomic mass units, and my density at 293K is 3.119g/cm3. I'm a liquid at room temperature, the only non-metal liquid at that. I boil at 58.78°C, whi ...

(2 pages) 24 0 3.0 Apr/2003

Subjects: Science Essays > Chemistry

"Finding the relative atomic mass of lithium."

ochloric acid, this can also be used to calculate the relative atomic mass of lithium.Readings:*100 cm3 of water*37.47 g of lithium plus the watch glass*37.41 g of Watch glass*122 cm3 of hydrogen gas ... ctedCalculations from method 1Moles of hydrogen produced:Assuming that 1 mole of gas occupies 24000 cm3 at pressure and room temperature!I will now calculate the number of moles of the hydrogen gas pr ...

(5 pages) 49 1 4.0 Nov/2003

Subjects: Science Essays > Chemistry

What are the uses, facts, history, and properties of the element known as Aluminum?

sName: AluminumSymbol: AlAtomic Number: 13Atomic Mass: 26.981539 amuDensity: 2.702 g/cm3Melting Point: 660.37 °CFreezing Point: 2467.0 °CDiscovery and HistoryIn 1825, a Da ...

(2 pages) 37 0 4.0 Dec/2003

Subjects: Science Essays > Chemistry

Chemical Properties of the element Barium

lso oxidizes very easy and it can be decomposed with water or alcohol. The density Barium is 3.51 g/cm3 when at 293K and it has a melting point at 998.2 K and boils at 2123 K.Barium was discovered and ...

(2 pages) 63 0 4.3 Feb/2004

Subjects: Science Essays > Chemistry

The Effect Of Substrate on Enzyme concentration

the volume of yeast and water is changed and then added to hydrogen peroxide the total volume is 8 cm3."h Make sure the volume of hydrogen peroxide in all the experiments is kept constant at 3 cm3"h ... row)"h Metal retort stand (x1)"h Electronic timer (recording to 1 sec intervals) (x1)"h Beaker (500 cm3) (x1)"h Micro test tube to fit into side-arm boiling tube"h Large side-arm boiling tube and bung ...

(11 pages) 57 0 4.2 Feb/2004

Subjects: Science Essays > Biology

Pilot test

with. I will start by using 2 molars of HCL and 0.15 molar of NaS2O3I will do two tests.1. 2m HCL 10cm30.15m NaSa 20 cm32. 1m HCL (5 cm 3 2 m + 5cm33 water0.15m NaS2O3 20cm3Amount of HCL(cm3) Amount o ... NaSa 20 cm32. 1m HCL (5 cm 3 2 m + 5cm33 water0.15m NaS2O3 20cm3Amount of HCL(cm3) Amount ofNaS2O3(cm3) Time(Sec) Amount of Water H20(cm3)10 cm3 20 cm3 32:34 sec 0 cm35 cm3 20 cm3 42:52 sec 5 cm3The ...

(1 pages) 15 0 1.0 Nov/2004

Subjects: Social Science Essays

The effects of change in concentration on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid.

to an increase in the rate of reaction because there will be a greater number of particles per unit/cm3. The particles will be closer together and have greater chance of colliding and therefore reacti ... ow is taken from my preliminary experiment's results and supports this argument.Volume ofdilute HCl(cm3) Volume of 40g/dm3Sodium Thiosulphate Volume ofWater(cm3) Time taken for Crossto disappear(sec)5 ...

(7 pages) 42 0 4.5 May/2005

Subjects: Science Essays > Chemistry

Mercury (Planet)

s mass is about 3.30 x 1026 grams or 1/18th or 0.06% of Earth's. Its mean density is 5.44 grams per cm3 which is about equal to that of Earth's 5.5 grams per cm3. Mercury's closest approach to the ear ...

(3 pages) 39 1 4.2 May/2005

Subjects: Science Essays > Astronomy

To find out if there is a relationship between fluid intake and urine output, by measuring my daily fluid intakes and urine outputs.

d have on oxygen, carbon dioxide to maintain a healthy and working body. For example if I drink 1000cm3 of fluids then the expected amount of urine I should produce would be around 4000 cm3 to 6000 cm ... onsidering that we have approximately 40 litres of body fluid, 1% is a change of 0.4 litres, or 400 cm3. 400 cm3 is the equivalent of 1.6 cups of water (250 cm3 = 1 cup). And, with a typical water int ...

(12 pages) 34 0 0.0 Feb/2006

Subjects: Science Essays > Biology > Human Biology

Increasing cell size lab - Science Probe 10

2 in textbook.Observations:Data:Cube Length (cm) Surface Area (cm2) Volume (cm3) RatioA 2 24 8 1:3B 4 96 64 ... be B is 2 cm longer than cube A, and cube B also has 72 cm2 more surface area than A. Cube B has 56 cm3 more volume than cube A. The ratio of surface area to volume is smaller for cube B.2. Cube C is ...

(1 pages) 943 0 0.0 Sep/2006

Subjects: Science Essays > Biology > Human Biology

Assess the impact of the invention of transistors on society with particular reference to their use in microchips and microprocessors.

cheaper and more reliable~Used less powerWhen transistors were first developed they were about 0.5 cm3 in volume It was found that transistors could also be miniaturized by using silicon doped with a ... ing silicon doped with arsenic/gallium. Several million transistors could now be placed on area of 1cm3. This had enormous consequences for the design and development of computers, CD players, interne ...

(1 pages) 30 0 3.3 Dec/2006

Subjects: Science Essays > Physics

Lab 12: Reduction of an Aldehyde to a Primary Alcohol by Use of NaBH4

handout)Physical Quantity TableType of substanceMolecular FormulaMolecular Weight (g/mol)Density(g/cm3)Melting Point(oC)Boiling Point(oC)HazardO-vanillinC8H8O3152.15-42.5265-266Harmful andIrritantFor ...

(2 pages) 17 0 3.0 Apr/2007

Subjects: Science Essays > Chemistry


sured and recorded it in millimeters.Area Determination 3. The area of the filter paper was 128.7 g/cm3.Use formula"¦pr2 Diameter of the circle was 12.8 cm. I then divided that by 2 to get the ... is to convert milliliters to liters.Density Determination 5. The density of ethyl alcohol is .778 g/cm3.Density = Mass Volume Mass = 47.84g. (Alcohol + Tube) "" 40.58g. (Test Tube Alone) = 6.99 Volume ...

(2 pages) 1606 0 0.0 Aug/2001

Subjects: Science Essays > Chemistry

Finding Out How Much Acid There Is In A Solution

Results Titre (cm3) Rough Titre 1st Accurate 2nd Accurate 3rd Accurate Start Titre ... Result 27.15 26.55 26.50 26.45 Three concordant results, within 0.10cm3 were obtained, I will therefore calculate an average of these 3 results, using the following for ... 2nd Accurate + 3rd Accurate Number of Accurate results 26.55 + 26.50 + 26.45 = 79.5 = 26.50cm3 3 3 The percentage error of these titres can also be calculated: ...

(10 pages) 17 1 4.0 Sep/2001

Subjects: Science Essays > Chemistry

Density Lab

7.475 3. 1.32 1.29 1.25 15.749 IV. Calculations Volume(cm3) Density (g/cm3) 1. .757796 1.9 2. .793702 ...

(1 pages) 1105 0 0.0 Feb/2002

Subjects: Science Essays > Chemistry

Metric measurement lesson plan

elp students' construct their own knowledge (Hersch, 1997) by building on what they already know (1 cm3) and linking it with stronger or more numerous ideas thereby enriching their network of ideas (H ...

(3 pages) 40 0 4.0 Sep/2007

Subjects: Social Science Essays > Education


istivity, thus:(2)Ls is the specific conductivity of the conductor defined as the conductivity of 1 cm3 of a material, expressed in Ω-1 cm-1. The cell constant can be obtained by measuring the c ...

(4 pages) 6 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry

Hess's Law

sment plan: Thermos, thermometer with scale to 0.1 °C, a stirrer, a spoon, measuring glass (200 cm3), and a regular glass container. The chemicals needed for this lab are: Sodium hydroxide in tabl ... ments are part of this lab:Experiment A: Reaction: NaOH (s) → NaOH (aq) ΔHAWe poured 200 cm3 of water in the thermos and measured the temperature as precise as we could. Then we weighed 2 g ...

(4 pages) 2134 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry

Determinations of the Protein Concentration of a Cell Extract Using the 'Bradford Method'

ution of BSA was made by diluting the protein solution to prepare concentrations ranging from 0.0mg/cm3 to 1.0mg/cm3 (Peck, 1998). 5cm3 of the Bradford dye reagent was added to 100μl of the solutio ... r 28mins. The absorbance of each solution is measured at 595 nm with the following results: 0.00 mg/cm3 = 0.00, 0.2 mg/ cm3 = 0.21, 0.4 mg/ cm3 = 0.34, 0.6 mg/ cm3 = 0.56, 0.8 mg/ cm3 = 0.68, and 1.0 ...

(3 pages) 25 0 0.0 Nov/2008

Subjects: Science Essays > Biochemistry

Investigating Solubility How does the solubility of Potassium Chloride and Potassium Iodide in water, vary with temperature?

e that KCl is dissolved5.909 g ±0.1mg7 °C ±0.1°CAmount of water = 10cm3±0.1 cm3 x 2 = 20cm3±0.2 cm36.9990 g ±0.1mg33°C ±0.1°C ... ±0.1°CTrial 2 Amount of KClTemperature that KCl is dissolvedAmount of water = 10cm3±0.1 cm3 x 2 = 20cm3±0.2 cm35.478 g ±0.1mg6.5°C ±0.1°C ...

(6 pages) 16 0 0.0 Dec/2008

Subjects: Science Essays > Chemistry