Volume (CM3) Diameter (CM) Radius (CM) M&M’S® Thickness (CM) 1 75 108 54 0.743 2 83 120 60 0.658 Table 2 – Direct Measurement Trial M&M’S® Thickness (CM) 1 0.642 2 0.741 3 0.683 Table 3 – Calculated Averages Method Calculated Average Thickness (CM) Indirect (from Table 1) 0.701 Direct (from Table 2) 0.689 Questions: 1. When you performed Step 2 of the procedure‚ you actually made a cylinder of M&M’S®. The cylinder was rather "smushed‚" and the
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Aluminum 2.70 Gold 19.3 1. An object has a mass of 57.7 g and occupies a volume of 21.65 cm3‚ what is its density? 2. An object whose density is 1.98 x 103 kg/m3 has a mass of 35.4 g. How many cubic centimeters does the object occupy? 3. A cylinder has a radius of 12.0 cm. It has a density of 15.2 g/cm3 and a mass of 100 g. What is the height of the cylinder? (Hint: volume of a cylinder can be calculated by r2h) 4. A friend shows you a gift
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in grams) of potato cores placed in them overnight (approximately 10 hours)? 2. Hypothesis Alternative hypothesis: As the concentration of sodium chloride in the solution increases‚ the mass of the potato cores will decrease. If the solution they are in has a lower water potential than the potato cores‚ there will be net movement of water out of the potato cores. If the solution has a higher water potential than the potato cores‚ there will be net movement of water into the potato pieces. Therefore
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conditions of communist countries. The static number of deaths due to communism is approximately 94 million. Compared to the deaths of the holocaust which would stand at 11 million. 94 million is a to high number‚ when dealing with innocent lives. The Potato Eaters‚ a painting by Vincent Van Gogh‚ a novel by George Orwell published in 1954‚ and “Dog‚” a 1977 song performed by Pink Floyd and written by David Gilmour explore the idea that communists countries have harsh conditions that will be apart of
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Previous exam questions on area between functions and volumes of solids. 1. Let f(x) = cos(x2) and g(x) = ex‚ for –1.5 ≤ x ≤ 0.5. Find the area of the region enclosed by the graphs of f and g. (Total 6 marks) 2. Let f(x) = Aekx + 3. Part of the graph of f is shown below. The y-intercept is at (0‚ 13). (a) Show that A =10. (2) (b) Given that f(15) = 3.49 (correct to 3 significant figures)‚ find the value of k. (3) (c) (i) Using your value of k‚ find f′(x). (ii) Hence
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Investigation into how pH levels affect Catalase activity in potato samples – (enzymes) Introduction: The aim of this investigation is to understand and monitor the effects pH levels have on catalase activity within controlled potato samples. Catalase is a type of enzyme that is found widespread among organisms that grow in the presence of oxygen (almost all living things) its specific use is to speed up the decomposition of Hydrogen peroxide (H2O2) within cells. Hydrogen peroxide is a bi-product
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investigate osmosis‚ which was successfully achieved because there was a change in the potato’s mass which was due to the net movement of water either into the potato cells or out of the potato cells. In the 0.400M solution‚ the potato decreased in mass‚ this was due to the reason that the solution was hypertonic. There was a higher concentration of solute and lower concentration of water in the solution than there was in the potato cells. This led the water to travel down its concentration gradient‚
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Science POTATO BATTERY: THE ADVENT OF TECHNOLOGY TABLE OF CONTENTS RESEARCH……………………………………………………………………...I PURPOSE……………………………………………………………….….……II DISCUSSION………………………………………………………………...…IV MATERIALS AND PROCEDURES……………………………………….......V RESULTS…………………………………………………………………....….VI CONCLUSION……………………………………………………….….….…VII BIBLIOGRPAHY……………………………………………………….….……VIII RESEARCH The potato is a starchy‚ tuberous crop from the perennial Solanum tuberosum of the Solanaceae
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Biology Aim: My objective is to plan and conduct an experiment from which I should be able to draw a firm conclusion that will either prove or disprove any predictions I make. This essay aims to assess and investigate the effect of various solution concentrations on the activity of osmosis in plant tissue. Background scientific theory: Plants exchange gases (CO2 and O2) in maintaining vital respiratory
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Osmosis using potato cores and sucrose solution 1.0 Abstract This experiment’s ultimate goal is to find the water potential of the potato cell. This was achieved through placing potato cores in different concentrations of sucrose (0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%‚ 2.0%‚ 3.0% and 4.0%) solution and to observe how much water was gained or lost through osmosis to reach a prediction of the concentration within the potato cell. The results displayed that the concentration of sucrose within the potato cell is
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