Data Table 2: Temperature measurements. Water Temperature (°C) Temperature (°F) Temperature (K) Hot from tap 42c 107.6f 315 k Boiling 99 c 210.0 f 372 k Boiling for 5 minutes 100 c 212 f 373 k Cold from tap 18 c 64.4 f 291 k Ice water – 1 minute 10 c 50 f 283 k Ice water – 5 minutes 5 c 41 f 278 k Data Table 3: Mass measurements Object Estimated Mass (g) Actual Mass (g) Actual mass (kg) Pen or pencil 5g 5.1 g .0051 kg 3 Pennies 9g 8.1 g .0081 kg 1 Quarter 5g 5.6 g .0056 kg 2 Quarters‚
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CHM130 Lab 2 Measurements: Accuracy and Precision A. Data Tables (36 points) Place your completed data tables into your report here: (original Data Data Table 1 Measurement Original Data Calculated Data Length of aluminum plastic packet 5 cm 50 mm Height of aluminum plastic packet 6.5 cm 65 mm Temperature of faucet water 26 degrees C 78.8◦ f Temperature of ice water 7 degrees C 44.6◦ f Volume of water in 10-mL graduated cylinder 7.1 ml 0.0071000L Volume
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droughts)‚ water temperature and evaporation rates. Land clearing and pollution‚ such as fertiliser usage and industrial waste are factors caused by human activity. Looking at figure 2 and 3‚ some well-known examples include increased dissolved salt concentration in the Dead Sea due to high evaporation and damaged aquatic life near the Great Barrier Reef caused by run-off from agricultural land. Eutrophication is caused by an excess amount of nitrate and phosphate in water bodies. It is usually caused
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Examples *0.1356 (4 significant figures) -> Round answer to 2 significant figures *0.1356 -> 0.14 *314.705 (6 significant figures) -> Round number to 4 significant figures. *314.705 -> 314.7 *0.0035771 (5 significant figures) -> Round to 3 significant figures. *0.0035771 -> 0.00358 *500‚000 (1 significant figure) -> Write this number to have 3 significant figures. *500‚000 - 5.00 x 10^5 *39.501 -> Round to 2 significant figures. *39‚501 -> 4.0 x 10 *0.054961 -> Round
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Coordination Complexes of Cobalt Advanced Inorganic Chemistry Lab 02/27/2015 Abstract When the transition metal‚ cobalt‚ forms a complex involving a nitrate ion‚ the ligand has the ability to coordinate via N or O. The ability of the nitrate to attach via the N or O gives rise to the term‚ linkage isomers and can affect the functionality of the complex with other molecules. To explore structural differences between complexes‚ pentaaminechlorocobalt (III) chloride‚ pentaaminenitritocobalt (III)
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around the Black Sea. Who mated with vanquished foes and only kept the female children they bore. 2. Where are references to the Amazons found? The first account was found in Homer’s ILIAD‚ an account of the Trojan War. Greek historian Herodotus talked about a group of women warriors in his writing around 5th or 6th century B.C. 3. What evidence is there that the Amazons may have existed in real life? The first evidence of women warriors came for the steppes of southern Russia from burial sites dating
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the choice that best completes the statement or answers the question. ____ 1. When solid lead(II) phosphate is in equilibrium with its ions‚ the ratio of lead(II) ions to phosphate ions is which of the following? a. 1:1 d. 2:3 b. 1:2 e. 3:2 c. 2:1 ____ 2. In a saturated solution of silver phosphate‚ the concentration of silver ion is 4.5 10-4 mol/L. The Ksp of silver phosphate would be which of the following? a. 6.8 10-8 d. 1.0 10-11 b. 1.4 10-14 e. none of the above
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CERTIFICATE This is to certify that Ranjeeta Singh of class XI (Science) has completed the chemistry investigatory project entitled The Study of the Acidity of Different Samples of Tea Leaves and the Reasons for the Variation in their Taste as a partial fulfillment of course curriculum under the supervision of Mrs. Mamta Agarwal. This is a bonafide work prepared by herself. Signature of Internal Examiner ACKNOWLEDGEMENT I bonafied CBSE for giving us
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Materials Small objects‚ such as pennies‚ pop-it beads‚ paper clips‚ bingo chips‚ etc.‚ 60 Beakers or other large containers‚ 2 Safety Precautions Although this activity is considered nonhazardous‚ observe all normal laboratory safety guidelines. Overview of the Activity 1. Each member of the group chooses a defined role: (a) reactant‚ (b) product‚ (c) monitor‚ and (d) recorder. 2. Obtain a counted set of 60 small pennies. These will be used to represent reactants and products in a chemical reaction
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photo A. (4 marks) (c) Describe and explain the characteristics of these three industries. (i) Photo A (3 marks) (ii) Photo B (3 marks) (iii) Photo C (in tradition) (3 marks) (d) How do personal factors affect the location of industries? (2 marks) ## (a) Photo A: Textile industry; Photo B: Dairy industry; Photo C: Iron and steel industry (b) (c) (i) Textile industry is a labour-oriented industry. / Textile industry requires a large amount of labour for production. It is
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