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- 33. Which graph best represents the following data? A, B, C or D Height (cm) Weight (kg) 150 45 160 50 170 55 180 60 height height height height3. An empty graduated cylinder weighs 26.80 ± 0.01 g. The mass of the graduated cylinder with 10.0 + -1.1 ml of liquid in it is 34.07 + 0.01g. What is the mass of the liquid? 4. If a graduated cylinder weighs 28.54 + 0.01 g, and if the graduated cylinder containing 9.0 ± 0.1 mL of a liquid weighs 36.19 + 0.01 g, what is the density of the liquid? 5. A student determines that an unknown liquid has a density of 0.78 g/ml., a boiling point of 63.0+ 0.1°C, and it is soluble in water and in ethyl alcohol. Use the table to idehtify the most likely candidate for the unknown liquid. What is the second most likely candidate for the unknown liquid? 6. Do any of the unknown liquids boil at temperatures above the boiling temperature of pure water?3.4 L= ? (Idk the actual subject but this is for my biology class)
- te Table 1: Mass (g) of bags A, B, and Cover time (min). 15% 30% Mass of A (g) Mass of B (g) Time (min) 0 15 30 45 60 12.4 10.4 9.1 7.7 ebookda 6.2 11.6 11.2 10.9 10.4 10 Mass of C (g) 12.1 12.9 13.8 14.7 65% 15.9 1. What is the tonicity of the unknown solution compared to bag A, bag B, and bag C, respectively? Answer this question by completing the sentences below. Compared to bag A, the unknown solution is hyper-tonic, because the mass of the bag decrease out (increased or decreased) indicating that water flowed (describe the direction of osmosis). akom bag decrease (increased or decreased) out not Compared to bag B, the unknown solution is so -tonic, because the mass of the indicating that water flowed oud (describe the direction of osmosis). Compared to bag C, the unknown solution is hype-tonic, because the mass of the bag increased (increased or decreased) indicating that water flowed into the cell (describe the direction of osmosis). 2. The pattern of change in mass was similar…Time (min) 0 15 30 45 60 75 Solution A Weight (8) 4.205 4.032 3.787 3.648 3.550 3.500 Change (%) Solution B Weight (8) 3.611 -4.11% 3.606 -6.07% 3.622 -3.67% 3.662 -2.69% 3.706 1.41% 3.732 Change (%) Solution с Weight (8) 4.257 -0.138% 4.213 0.444% 4.219 4.209 Change (%) 4.210 -1.03% Solution D Weight (8) 4.728 4.513 0.142% 4.350 1.10% 0.237% 4.254 1.20% 0.024% 4.068 0.675% 4.209 -0.024% 4.140 Change (%) -4.55% -3.61% -2.21% -4.37% 1.77% Graph your results below, plotting percent weight change versus time for all 4 unknown solutions on one set of axes, labeled clearly with units. Include a title for your graph.11. A 10-mL graduate weighs 42.745 g. When 5 mL of distilled water is measured in it, the combined weight of the graduate and water is 47.675 g. By definition, 5 mL of water should weigh 5 g. Calculate the weight of the measured water and express any deviation from 5 g as percentage of error.
- 2. How many cm are in 562 um? 662um x cm 10.0562pa lo00 m 3. How many milligrams is 71 grams? 71'grams milligramy groms 4. Convert 361 microliters (uL) into milliliters. 5. Convert 83 dg into mg. 6. Convert 52.7 mm to cm.Use the following balanced equation for problems 1–5. Molar masses are given below. 2 As 3 H2 2 AsH3 150. kcal + + molar masses 74.92 g 2.02 g 77.95 g How many moles of hydrogen are required to react with 25.00 moles of arsenic, As ? A. 75.00 mol B. 25.00 mol C. 16.67 mol D. 37.50 mol(3x4) 198 4. A rectangular solid measures 8 cm long by 2 cm wide by 2 cm high. What is the surface-area-to-volume ratio? (8+2) 53 3. 53
- The content of calcium in Al-Jabal Al-Akhdar bottled drinking water is 7.9 mg per liter. How many moles of calcium ions are in 330 mL of this water? O a. 0.065 mol O b. 6.5x10-5 mol O c. 3.9 x10-19 mol O d. 2.0x10-4 mol O e. 0.20 mol7 Zopiclone 3.75mg is prescribed for short term relief of chronic insomnia secondary to psychiatric disturbances. In stock, 3.75mg tablets are available. How many tablets are required? Please give your answer as a whole number Answer: tabs Show Calculator1. A 6-year-old child has been prescribed Gaviscon suspension 10 mL four times a day. Gaviscon suspension contains 3.1 mmol Na+/5 mL. The recommended daily allowance (RDA) of salt for a 6-year-old child is 3 g (equivalent to 1.2 g sodium) per day. The atomic mass of sodium is 23. What percentage of this child’s recommended daily salt allowance is contained in a total daily dose of Gaviscon suspension? Give your answer to the nearest whole number.SEE MORE QUESTIONS