ordinary chemical reactions or physical changes‚ which means that no matter how dramatic of a change that a substance goes through‚ it will not lose mass. It may seem like it lost mass‚ and usually‚ if you weighed the result‚ it will have a different measurement than when you first started. Sometimes the mass is lost into the atmosphere. Procedure: Part 1: 1. Acquire‚ label‚ and record the weight of two beakers. Weigh 2-3 (g) of baking soda with one beaker. 2. Measure approximately 50 ml of vinegar
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non-numerical categories. The weight of the pennies is a quantitative variable. Quantitative data consist of values representing counts or measurements. d. Choose one of the variables in your dataset and classify it according to the levels of measurement. Explain how you know. The weight of the penny is a ratio level of measurements. The ratio level of measurement applies to quantitative data in which both intervals and ratios are meaningful. Data at this level have a true zero point. e. Can you
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or the volume of a gas evolved. In this experiment‚ the method of continuous variations will be used to determine the mole ratio of two reactants. With this method‚ the total number of moles of reactants is kept constant for the series of measurements. The property that is going to be measured is the change in temperature. The temperature change‚ or the heat produced‚ will be directly proportional to the amount of reaction occurs and to the total extent of it. The optimum ratio‚ which is the
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Name: Exp 9: Stoichiometry of a Precipitation Reaction Data Tables: Step 3: Show the calculation of the needed amount of Na2CO3 CaCl2.H2O(aq)= m/M =1/147 =0.0068 mol CaCO3(s)=0.0068*1/1 =0.0068 mol CaCO3 (s)= CaCO3 mol *CaCO3 g =0.0068 mol*100.01 g =0.68 g Convert moles of Na-2CO3 to grams of Na2CO3 = 0.00680 moles Na-2CO3 x 105.99g Na-2CO3 1 mole Na-2CO3 = 0.72g 0.72g of Na-2CO3 to fully react with 1g of CaCl2-.2H2O Step 4: Mass of weighing dish
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PDP Physics Lab Report – 01 NAME: Wang Xueqian DATE: 2014/06/21 Introduction In this experiment‚ we will investigate the relationship between the linear speed of an object and magnitude of centripetal force acting on it. We will use a stopper moving in a circle to create an upward force on the hanging mass; at equilibrium‚ the upward force on the mass will exactly equal the centripetal force. Apparatus Two-hole Stopper Plastic Tube Plastic Clip Electronic balance Hooked Masses Stop Watch String
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terms (quantity‚ quality‚ frequency‚ costs‚ deadlines‚ etc.). It refers to the extent to which something can be evaluated against some standard. An objective with a quantity measurements uses terms of amount‚ percentages‚ etc. A frequency measurement could be daily‚ weekly‚ 1 in 3. An objective with a quality measurement would describe a requirement in terms of accuracy‚ format‚ within company’s guidelines. ACHIEVABLE It answers the questions "Can the person do it?" "Can the measurable objective be
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as measurements. Bob Donovan: His performance measure is to finish everything that needs to be done in time and complete the order. He said‚ “I just saw what had to be done‚ put everybody to work on it‚ and the hell with the rules‚" Bill Peach: His performance measure is the productivity of the whole company. He said‚ “The future of our business depends upon our ability to increase productivity.” 3. (Chapter 4) What do you think the goal is? What might be wrong with the other measurements Alex
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quantity of rain falls close to the source of the river there will be a greater amount of water travelling down stream and as a result the volume of water will be travelling at a higher speed. In the section of the river harbourne that that this measurement was taken in a high river velocity can indicate that Harbertonford is susceptible to flooding‚ a hazard that the flood defences in place in the village are designed to deal with. In order to gain a figure of river velocity a count box and an impellor
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Chemistry SL Magnesium Oxide Lab Report Rashpreet Singh Date Performed: November 6‚ 2014 Research Question: To determine the empirical formula of the compound which forms between magnesium and oxygen. Design: The following figure represents the experiments lab setup‚ visualize the equipment used. Materials: Done 1. Ceramic evaporating dish 2. Electronic balance 3. Bunsen burner 4. Retort stand‚ ring clamp‚ clay triangle 5. Sand Paper 6. Tongs 7. Magnesium Ribbon Safety: Done 1. The duration
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If a plastic sandwich bag is tied around a Magnolia tree‚ a Ligustrum tree‚ and a Robellini palm tree‚ which tree will transpire the most? This project relates to the outside world because someone could get lost in the woods and need water‚ so they need to know which tree will be the most efficient. The original hypothesis was‚ if a plastic sandwich bag is tied around a Magnolia tree‚ a Ligustrum tree‚ and a Robellini palm tree‚ then the Magnolia tree will transpire the most because it has the largest
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