Solubility Curve of Sodium Nitrate Data collection |Temperature (°C) | |Mass of solute in 5ml (g) |Mass of solute in 100ml (g) | |1st set of data |2nd set of data |Average | | | |23.5 |24.0 |23.8 |4.5
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ml of 1M solution = 10.6g Weighing of salt using electrical balance * Mass of Na2CO3 + beaker = 78.64g * Mass of beaker = 68.04g * Mass of Na2CO3 = 10.6g 1. 10.6g of Na2CO3 was weighed in a dry beaker. Small amount of distilled water was added and the salt was dissolved. 2. The contents of the beaker were transferred to clean volumetric flask of 100ml. 3. Collection of washings was done 3-4 times. 4. The solution was made 100ml
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Relative Density Laboratory Report Jessica Manansala‚ Nathaniel Martinez‚ Maria Pacia‚ Jeanelle Pedrigal‚ Miguel Poblete Department of Math and Physics College of Science‚ University of Santo Tomas España‚ Manila Philippines Abstract The experiment would introduce us to 3 concepts‚ namely‚ the definition of relative density‚ the Archimedes principle and the determination of density by the Archimedes principle. In the first activity‚ we were tasked with finding the density of a cylinder
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STRAIGHT LINE MODEL In many investigations‚ two or more variables are observed for each experimental unit in order to determine: 1. Whether the variables are related. 2. How strong the relationships appear to be. 3. Whether one variable of primary interest can be predicted from observations on the others. Regression analysis concerns the study of relationships between quantitative variables with the object of identifying‚ estimating‚ and validating the relationship. The estimated relationship
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Sodium hypochlorite‚ also known as chlorine bleach‚ soda bleach‚ or household bleach is a chemical with the formula NaClO. A common way sodium hypochlorite gets into the San Francisco bay is through daily household cleaning products such as laundry bleach. In a survey conducted by The Clorox Company‚ it was found that four out of five households use sodium hypochlorite bleach for their laundry. Since laundry detergent companies are not required to list every ingredient‚ customers are often not aware
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aim of your Investigation. To investigate the effects of change in concentration on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid. Briefly describe your Preliminary Experiment and include your results. Explain how these results have helped you plan your main experiment (p8b). An increase in concentration will lead 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
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Name Date Lab: Denisty – Solids and Liquids Part 1: Density Background Information: The density of an object is how much “stuff”‚ or molecules‚ a substance is made of. Density is how tightly packed the molecules are. To 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
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with a larger density will increase the temperature of the ice faster than salts with a smaller density because the heavier salts will sink through the ice faster since they have a heavier density than water and stop the molecules from staying ice faster‚ consequently raising the temperature of the solution‚ than lower density salts would. . The data I collected shows potassium chloride‚ which has a density of 1.98 g/㎤‚ increased the solution’s temperature at a faster rate than any of the other solutions
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identical balls‚ carrying equal charge each of mass 0.10g‚ are suspended freely by two threads of equal length repelled each other so that each thread make angle 300 with vertical line. At equilibrium‚ calculate the tension in one of the threads. (Acceleration of gravity pull g = 9.8 m/s2) (a)* 1.13x10-3 N (b) 6.3x10-6 N (c) 0.41 N (d) 5.1 x10-12 N 6. When two identically charged bodies suspended freely by thread of equal length repel each other all of these forces are acting on
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Lab No.1: density‚ accuracy and precision Aim: to determine the relative precision and accuracy of different glassware items by calculating the density of a known substance. Introduction: the density of a substance is its mass per unit volume. (where P-density‚ m- mass and v- volume). Different materials usually have different densities and densities vary according to the pressure‚ temperature and purity of a substance. When measuring‚ there is always a small uncertainty or error and therefore
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