Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
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dividing them by 3.The volumes of the two shapes substances were determined by using a graduated cylinder and a beaker. The first method that we used was the water displacement. The first sold substance was in a regular shape‚ and we calculated its mass by putting it on a balance 3 times. Next‚ we wanted to calculate the volume of the substance‚ so
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Mathematics 2MM01 Formulae – Higher Tier You must not write on this formulae page. Anything you write on this formulae page will gain NO credit. Volume of a prism = area of cross section × length 1 Area of trapezium = 2 (a + b)h a cross section h length b Volume of cone = 1 r 2h 3 Curved surface area of cone = rl Volume of sphere = 4 r 3 3 Surface area of sphere = 4 r 2 r l h r In any triangle ABC b A Sine Rule a B c a sin A The Quadratic
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as shown in Diagram 1 for the Teachers’ Day celebration. 1) If a kilogram of cake has a volume of 3800cm³‚ and the height of the cake is to be 7.0 cm‚ calculate the diameter of the baking tray to be used to fit the 5 kg cake ordered by your school. [Use π = 3.142] 2) The cake will be baked in an oven with inner dimensions of 80.0 cm in length‚ 60.0 cm in width and 45.0 cm in height. a) If the volume of cake remains the same‚ explore by using different values of heights‚ h cm‚ and the corresponding
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lab‚ taking proper measurements‚ and how to use the International System of Units (SI). Throughout lab we learned about mas‚ volume‚ length and temperature‚ and to be able determine density and concentration. To be able to documents properly and make effective observations we must be able to understand the International Measurement System. Length‚ temperature‚ time‚ and volume are measured by this system. There are many different techniques to measure all of the metric system. Length is measured
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number of cells per unit volume of liquid”. For example‚ they might want to find out the density of red blood cells in blood plasma‚ the density of bacteria in milk‚ or the population of Paramecium sp. (a protozoan) in water from a pond. The simplest‚ most convenient and cheapest means of accurately determining the number of cells in a sample is to use a haemocytometer and a microscope. A haemocytometer is a specialised slide that has a counting chamber with a known volume of liquid. The haemocytometer
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colourless. This process is known as decolourization. Thus‚ we can estimate the amount of Vitamin C in the brands of orange juice by comparing: 1.) The volume of vitamin C solution (of 0.1% concentration) needed to decolourize a certain volume of DCPIP solution. 2.) The volume of a certain brand of orange juice needed to decolourize the same volume of a known concentration of DCPIP solution. 3.) Variable table: Independent Variable Dependent Variable Controlled Variable Different brands of orange
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Making up Hydrogen Peroxide Volume required 250 cm3 and concentration required 0.1 moldm-3 Given concentration of H2O2 = 1.7 moldm¬-3 Number of moles (n¬¬¬¬¬¬¬¬¬¬¬) = Concentration (moldm-3) x Volume (dm-3) = 0.1 x 0.25 = 0.025 mol Volume (dm-3) = Number of Moles (n) X 1000 Concentration (moldm-3) = (0.025/1.7) x 1000 = 14.7 cm3 Distilled water required: 250 cm3 – 14.7
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Based on that the tank is a sphere-shaped and we have to find the volume‚ I used the formula for the sphere volume which is: V= 4/3(3.14 x r^3) V= 4/3(3.14 x 70^3) V= 4/3(1‚077‚020) V= 1‚436‚026.66666... V= 1‚436‚027 But I have to find the volume of the quarter sphere-shaped‚ so: V= 1/4 x 1‚436‚027 V= 359‚007 The volume of the quarter-shaped tank is 359‚007 cubic feet Holding Tank Calculations- 2. I used the formula of volume of cylinders. The cylinders are cut in two congruent halves‚ with
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To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL beaker |
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