To identify a liquid substance, a student determined itsdensity. Using a graduated cylinder, she measured out a 45-mLsample of the substance. She then measured the mass of thesample, finding that it weighed 38.5 g. She knew that the substancehad to be either isopropyl alcohol 1density 0.785 g>mL2or toluene 1density 0.866 g>mL2. What are the calculated densityand the probable identity of the substance?

Q: Gold has a density of 19.31 g/cm ^3. How much volume in cL would 7.0kg of gold occupy/?

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Q: Convert 5.552765015 mm to m^2

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Q: A 357.0 mL sample of carbon dioxide was heated to 393 K. If the volume of the carbon dioxide sample…

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Q: An empty container has a mass of 2.8g. If we added 35.57mL of liquid to the container, the new mass…

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Q: What isthe density (g/mL) of an object that has a mass of 14.01 grams and, when placed into a…

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Q: The liquid cyanoacetylene has a density of0.817 g/mLat20.0∘C. If a51.9 mLsample of this compound is…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

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A: In this question we have to convert the unit of speed.

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Q: 38.The density of carbon dioxide is 1.8 kg/m^3. So, the volume occupied by 7.2 kg of carbon dioxide…

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Q: The liquids propyl cyanide has a density of 0.794 g/ml at 20.0 degree celcius.If a 138 gram sample…

A: The given density of propyl cyanide = 0.794 g/ml Required mass of propyl cyanide = 138 g

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Q: The concentration of carbon monoxide in an urban apartmentis 48 μg/m3. What mass of carbon monoxide…

A: 1 ft = 0.3048 m Therefore, dimensions of the room are : 10.6 ft x 14.8 ft x20.5 ft = 3.23 m X 4.51 m…

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A: Accurate measurement :- A measurement is said to be accurate if it is very close to the actual…

Q: Suppose

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Q: A9.55g sample of a solid was placed in a 15mL flask. The remaining volume was filled with benzene in…

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Q: Calculate the volume in milliliters occupied by one molecule of ethyl alcohol, C2H5OHC2H5OH, in a…

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Q: The density of gold is 19.32g/cm^3 at 20 degrees C. If 25.75g of pure gold nuggets is added to a…

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Q: 3.6 x 10 3 kg X 6.89 x 10 5g in kg

A: 1 kg = 1000 g

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Q: A 505.9 mL sample of carbon dioxide was heated to 351 K. If the volume of the carbon dioxide sample…

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Q: mass of the necklace

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Q: Which of the statements below are true of the substance represented in the diagram?

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Q: The density of aluminum is 2.702 g/cm3. If an aluminum cylinder with a mass of 32.154 g is dropped…

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Q: A 10.00mL sample of liquid is added to a flask with a mass of 90.05g. The mass of the flask and…

A: Given, Volume of liquid =10.0 mL mass of flask =90.05 g mass of flask and liquid =98.0 g

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Q: A 125mL flask and stopper have a mass of 79.310g. A 25.0mL sample of an unknown volatile liquid is…

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Q: A piece of metal thought to be either chromium , nickel or lead was weighed and found to have a mass…

A: A piece of metal either chromium, nickel or lead have a mass of 47.4 grams. The volume of water is…

Q: 1. A 25 mL flask is known to hold a total volume of 27.64 mL when completely filled. The empty flask…

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Q: The density of a certain metal is (6.60x10^0) g/cm3. What is the mass in grams of a sample of this…

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Q: In the movie The Italian Job, thieves steal gold bullion. One plan is to carry the ingots of gold…

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Q: Determine the density of water at 34 °C in g/mL?

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Q: A 270.3 mL sample of carbon dioxide was heated to 303 K. If the volume of the carbon dioxide sample…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.