premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius‚ Fahrenheit and Kelvin. Purpose: Weighing objects. Figuring out the density with an object by calculated volume and Archimedes’ Principle. obseRvations Data Table 1: Length measurements. Object Length (cm) Length (mm) Length (m) CD or DVD 12 cm 120mm
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QUESTION 1 :A snowball has volume where r is the radius. The snowball is melting so that at the instant that the radius is 4 cm. The radius is decreasing at the rate of 0 .25 cm/min. What is the rate of change of the volume at this instant? FACT IDEA LEARNING ISSUE ACTION PLAN 1) Snowball is melting that at the instant. 2) The snowball radius is 4cm. 3) The radius is decreasing at the rate of 0 .25 cm/min. 1) Make equation using chain rule. Chain rule based on the information given. 1)
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Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams‚ g) [1] Volume of liquid (milliliters‚ mL) [2] Mass of graduated cylinder and liquid (grams‚ g) [3] Part II: Density of Irregular-Shaped Solid Mass of solid (grams‚ g) [4] Volume of water (milliliters‚ mL) [5] Volume of water and solid (milliliters‚ mL) [6] Part III: Density of Regular-Shaped Solid Mass of solid (grams‚ g)
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25 mL of water to the graduated cylinder. Precisely measure this volume of water. Add another 25 mL of distilled water to the graduated cylinder. Again‚ precisely measure this volume of water‚ and then measure the combined mass. Repeat Step 3 to obtain a third set. Use the 100 Ml Part 2.Measurment of the density of a liquid 4. Prepare dry and clean 25mL graduated cylinder. Balance should be zero first. 5. Note the volume of the meniscus after fill the cylinder by two third with water. Add
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minutes of boiling. Our understanding that only pure water boils up to 100 Celsius. Also‚ the longer it boils the higher the increase temperature and evaporation occurs; this recorder under data 2. The third we were able to conduct Volume of how much drops and volume of water can hold thin-stemmed pipet‚ this recorded under data 3. Then we moved to data 4 for mass measurement‚ it was estimating 7 objects by holding to objects‚ and obtaining actual mass using a digital scale and recorded in grams
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using air as his control. He wanted to numerically prove how the diffusion of the gas volumes was inversely proportional to the value of the density of the gas‚ under constant temperature and pressure. The significance of this experiment was that in led to a reevaluation of the concept of the movement of matter‚ realizing that diffusion dealt with small immeasurable elements of matter‚ as opposed to large volumes of air‚ as perceived in the corpuscular theory‚ shedding light into the study of the
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Laboratory Techniques and Measurements (adapted from Labpaq Version 09.1.06 by Peter Jeschofnig‚ Ph.D.) Experiment Summary You will have the opportunity to learn how to conduct measurements in mass‚ volume‚ and density using scales and common laboratory equipment. Review the safety materials and wear goggles when working with chemicals. Read the entire exercise before you begin. Take time to organize the materials you will need and set aside a safe workspace in which to complete the exercise
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calculate the density of a substance we need to know the mass (weight) of the substance and the volume (how much space) of the substance. Mass is determined by weighing an object. Volume of regular shaped objects is calculated by measuring length (L)‚ width (W)‚ and height (H) in centimeters (cm) and then multiplying them. V = L x W x H. Density is calculated by dividing mass (in grams) by the volume (in milliliters or cm 3 ). D = M/V. Part 2: Density of a regular shaped solid Procedure:
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empty graduated cylinder with the mass of the cylinder and liquid. For the density of solids‚ the rectangular block was weighed and the volume was determined by measuring the length‚ width and thickness. For spherical solid‚ the circumference or diameter was measured and using the specific formulas‚ their volume was determined. For irregular solids‚ the volume was determined by water displacement method using a graduated cylinder. ( Write your results here. For example) It was noted that the
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decolourisation of DCPIP from blue to clear as the indicator. • You first need to estimate the volume of a known concentration of vitamin C solution required to decolourise 2 cm3 of DCPIP solution. • Then you need to determine the volume of fruit juice that decolourises 2 cm3 of DCPIP solution. This gives an estimate of the concentration of vitamin C in fruit juice. • This value is then multiplied by the volume of the fruit to obtain its total vitamin C content. Apparatus: 50 cm3 beaker 100
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