5. A flask that weighs 342.5 g is filled with 223 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is found to be 702.55 g. From this information, calculate the density of carbon tetrachloride.
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5. A flask that weighs 342.5 g is filled with 223 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is found to be 702.55 g. From this information, calculate the density of carbon tetrachloride.
6. Calculate the density in g/mL of 0.56 L of solution weighing 190 grams.
7. What volume (in cm3) of silver metal will weigh exactly 2500.0 g? The density of silver is 10.5g/cm3.
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- B. Describe whether the following are physical or chemical properties. Explain your answer in no more than 5 sentences. a. Deoxygenated blood is darker than oxygenated blood. b. Carbon dioxide emissions increase the acidity of oceans.Bud N. Chemist must determine the density of a mineral sample. His five trials yield densities of 5.15 g/cm3, 4.83 g/cm3, 5.08 g/cm3, 4.97 g/cm3, 5.12 g/cm3. Independent studies found the correct density to be 5.06 g/cm3. Which of the following is incorrect? a. The mean of his analysis is 5.03 g/cm3 indicating an error of 0.03 g/cm3 from the correct density B.His data has a standard deviation of 0.017 g/cm3 C.His data has a relative standard deviation of 2.60% D. He can report his analyzed density as 5.0±0.2 g/cm3 at a 95% confidence level E. The true value (population mean) is found within the confidence interval of Bud’s work2. Brass is an alloy of copper and zinc. Varying the mass percentages of the two metals produces brasses with different properties. A brass called yellow zinc has a high ductility and strength and is 34-37% zinc by mass. a. Find the mass range (in g) of copper in 185 g of yellow zinc. b. What is the mass range (in g) of zinc in a sample of yellow zinc that contains 46.5 g of copper?
- 1. Describe how to use conversion factors correctly using an example. 2. Write a number between 1.000 and 9999999.99. Write the number of significant figures in your number. 3. Give an example of how to find significant figures in calculations for A addition or subtraction B. multiplication and divisionP. The density of a material can be used to calculate the volume of an object if its mass is known. Likewise, the mass can be calculated if the density and volume are known. A pre-1964 quarter, made predominantly of silver (density = 10.5 g/ml), was determined to have a mass of 6.25 g. What is the volume of the quarter? a) 0.595 mL b) 1.68 mL c) 6.25 mL d) 65.6 F10 FIL gO F3 F8 000 F4 F7 F5 F6 F2 & * $ 4 #3 % 7 8 Y U16. A mixture is made by adding 20.42 g of substance A, 1.322 g of substance B, and 83.1 g of substance C. Calculate the total mass of the mixture with the proper number of significant figures. 17. The average speed of a nitrogen molecule in air at 25 °C is 515 m/s. Convert this speed to miles per hour.
- A. Density Computation. Solve what is asked. Round off your answers into 2 decimal places and make sure to place the appropriate unit. Encircle your final answer. If 94.5 grams of gold has a volume of 4.9 cm3, what is the density of gold? A rectangular block of copper metal weighs 1936 g. The dimensions of the block are 7.4 cmlengthby6.5cm width by 4.6 cm height. From this data, what is the density of copper? 27.3 g of iron shot is added to a graduated cylinder containing 46.70 mL of water. The water level rises to the 50.10 mL mark, from this information, calculate the density of iron. If the density of a diamond is 3.5 g/cm3, what would be the mass of a diamond whose volumeis.5cm3?Calculate the areas and densities. Report the answers in the correct units.a. the area of a rectangle with sides measuring 3 × 1 0 1 cm and 3 × 1 0 -2 cmb. the area of a rectangle with sides measuring 1 × 1 0 3 cm and 5 × 1 0 -1 cmc. the density of a substance having a mass of 9 × 1 0 5 g and a volume of 3 × 1 0 -1 c m 3d. the density of a substance having a mass of 4 × 1 0 -3 g and a volume of 2 × 1 0 -2 c m 3A.Use the image in Question 1. You may also refer to the Lab 10 document or your own lab manual if you have it. What is the distance ion x (dx) traveled? Report the value only using one decimal place. Your answer should have the units cm. B.Use the image in Question 1. You may also refer to the Lab 10 document or your own lab manual if you have it.What is the distance ion y (dy) traveled? Report the value only using one decimal place. Your answer should have the units cm. C.Use the image in Question 1. You may also refer to the Lab 10 document or your own lab manual if you have it.What is the distance ion z (dz) traveled? Report the value only using one decimal place. Your answer should have the units cm. D. What is the retention factor for ion x, RF(x)? E.What is the retention factor for ion y, RF(y)? F.What is the retention factor for ion z, RF(z)?
- The density of a pure substance is its mass per unit volume. The density of hexane has been measured to be 655.. Calculate the mass of L 455. mL of hexane. The density of a pure substance is its mass per unit volume. The density of hexane has been measured to be 655 hexane. Calculate the mass of 455. mL of1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…
