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- A student needs to determine density of a liquid. The student determines mass of an empty.flask to be 251.21 g and then adds 224 mL of liquid to it. The mass of the flask with liquid is 451.13 g. What is the density of the solution in units of g/mL?If a sample of unknown substance has a mass of 3.10 kg and a volume of 1.80 L, what is the density of the substance when expressed in conventional (but non-SI) units of g/cm3?Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 9.80 g and has a volume of 0.583 cm³. Gold has a density of 19.3 g/cm³ and copper has a density of 8.96 g/cm³. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper: % Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats
- You want to produce a 50 g sample of glucose by evaporating to dryness a quantity of glucose solution containing 8% glucose by mass. The density of the glucose solution is 1.15 g/mL. What volume of glucose solution, in liters, must be taken for this purpose?Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 7.05 g and has a volume of 0.504 cm. Gold has a density of 19.3 g/cm' and copper has a density of 8.96 g/cm³. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper: Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats 10:08 AM 9/3/2021 64°F Clear ENG1. A 25 mL flask is known to hold a total volume of 27.64 mL when completely filled. The empty flask has a mass of 45.897 grams. The student was to determine the density of an irregularly shaped solid. He added the solid to the flask and determined that the mass of the flask and the solid was 156.11 grams. He then filled the remaining volume of the flask with water and determined that the mass of the flask, water and solid was 171.89 grams. The density of the water was 0.9970 g/mL. Using this information answer the following questions: a) What was the mass of the solid? b) What was the mass of the water? c) What was the volume of water? d) What was the volume of the solid? e) What was the density of the solid?
- The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the temperature changed. Is this a chemical or physical change?High-density lipoprotein (HDL) is a type of cholesterol, sometimes called “good cholesterol,” that is measured in a routine blood test. If a 0.258-g sample of HDL has a volume of 0.215 cm3, what is the density of the HDL sample?To identify the substance, a chemist determined its density. By pouring a sample of the liquid into a graduated cylinder, she found that the volume was 35.1 mL. She also found that the sample weighed 30.5 g. What was the density of the liquid? What was the substance?
- Unfermented grape juice used to make wine is called a “must.” The sugar content of the must determines whether the wine will be dry or sweet. The sugar content is found by measuring the density of the must. If the density is lower than 1.070 g/mL, then sugar syrup is added until thedensity reaches 1.075 g/mL. Suppose that you have a sample taken from a must whose mass is 47.28 g and whose volume is 44.60 mL. Describe how you would determine whether or not sugar syrup needs to be added and if so, how would you estimate how much sugar syrup to add?Since density depends on the mass and volume of an object, we need both of these values combined in the correct way to solve for density. Keep in mind that we may not be given the mass and volume directly, or the values may not be given in the units we want and we need to convert to the correct units before solving for density. When converting between metric units, use the prefixes to help you determine the magnitude of a value. The prefix k indicates kilo, 1000. Therefore 1000 g = 1 kg. A 17.0 kg iron weightlifting plate has a volume of 2160 cm³ . What is the density of the iron plate in g/cm³? Express your answer in grams per cubic centimeter to three significant figures. • View Available Hint(s) Hνα ΑΣφ ? density of iron plate = g/cm3What is the volume of the room in cubic feet? An architect designs a room that has interior measurement of 50.0 feet by 30.0 feet by 10.0 feet.