Precious metals and gems are measured in troy weights in the English system. The following conversion factors are all considered exact.  24 grains= 1 pennyweight 20 pennyweights= 1 troy ounce 12 troy ounces= 1 troy pound 1 grain= 0.0648g 1 carat= 0.200g 1 pound avoirdupois= 453.6 g The density of platninum is 21.45 g/cm 3. What is the volume of one pennyweight of platinum?

Q: A student is determining the density of an unknown metal with a mass of 256.0 g. The student…

A: First, the volume of unknown metal is determined as follows,

Q: 1. A 50.00 g sample of a solid is placed into a graduated cylinder and then the cylinder is filled…

A: Given, mass of a sample of solid = 50.00 g            volume of cylinder filled = 100.00 mL…

Q: From 1967 until 1999, Canadian 10¢ and 25¢ coins were made of pure nickel which has a density of…

A: The solution of the given question is

Q: A block of iron was measured to be 2.00 cm by 3.15 cm by 5.25 cm. If the density of iron is 7.87…

A: Block of Iron was measured and value is given Density of iron is given How Heavy was the block of…

Q: Which of the following series of mathematical operations would convert 0.45 miles into centimeters?…

A: To solve this problem we have to do the given unit conversion.

Q: A student goes to the lab and is tasked with measuring the mass of a block of nickel metal that has…

A: In given question there is need to define how the exact value is determined from different…

Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: A flask that contains 14. 59 mL liquid has a mass of 35. 66 g . What is the density of the liquid if…

A:

Q: Aluminum has a density of 2.70 g/cm3. What is the mass of an aluminum cube with a length of 3.61 cm?…

A: Length, a = 3.61 cm Volume of cube is obtained from length – Volume = a3=3.61 cm3=47.046 cm3

Q: Suppose you were given a piece of unknown metal, with a mass of 22.580 g, and a 50-mL graduated…

A:

Q: Calculate the length in meters of a piece of sheet metal that is 1.50 mm thick and 2.01 meters wide…

A: Given, thickness of piece of sheet metal = 1.50 mm            width of piece of sheet metal = 2.01 m…

Q: The density of a quartz mineral was determined by adding a weighed piece to a graduated cylinder…

A:

Q: A student is determining the density of unknown metal with a mass of 627.0 g. The student partially…

A:

Q: An empty Graduated cylinder weighs 82.450 g. When filled to 50.0 mL with an unknown liquid it weighs…

A: SOLUTION: Step 1: Weight of cylinder with liquid = 126.997 g. Weight of empty graduated cylinder =…

Q: There is a pebble in a graduated cylinder filled with water and the volume reads 106 mL. If you…

A: The objective of this question is to find the mass of the pebble given its density and the change in…

Q: he level of water in a graduated cylinder measured 48.8 mL. An irregularly-shaped piece of metal was…

A:

Q: A chemistry student needs 45.0 mL of diethmylamine for an experiment. By consulting  the CRC…

A: Given,Volume of diethylamine = 45.0 mL = 45.0 cm3         (1mL = 1cm3)Density of diethylamine =…

Q: A chemistry student needs 15.0 g of ethanolamine for an experiment. By consulting the CRC Handbook…

A: According to the question,The student needs the mass of ethanolamine = 15.0 g.The density of the…

Q: A student was given 3 unknown cylinders each with masses of exactly 25.00 g. The choices of metal…

A: The displacement of water by metal is equal to the volume of metal. The volume of metal can be…

Q: A rubber stopper had a mass of 5.62g. When the rubber stopper is carefully added to 12.5 mL of water…

A:

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: 25 cm. What is the density of the rectangular copper block? O 11.1 g/cm3 O 28.4 g/cm3 O 29.0 g/cm3 O…

A: Applying formula d= m/V

Q: flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

A: The mass of flask of mercury  = 76pounds  1 Pounds = 453.92grams

Q: A hectacre (1.0000 x 104 m2) is a metric unit of area analogous to an acre. How many square feet are…

A: 1 feet consists of 0.3048 m and 1 square feet consists of 0.093 m2. 1 hectare consists of 10000 m2 5…

Q: The density of silver is 10.5 g/cm³. What is the mass of a silver bar (in gms) that measures 0.1000…

A:

Q: A person is 1.790 yards tall. How tall is he in cm? 1 yd = 3 ft, 1 in = 2.54 cm O 1.728 cm 4.801 cm…

A:

Q: A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder,…

A:

Q: Suppose you were given a piece of unknown metal, with a mass of 22.510 g, and a 50-mL graduated…

A: Mass of metal = 22.510 gm  Volume of water = 36.1 ml  Volume of water after addition of metal = 45.8…

Q: What is the density of an object that raises the level of water in a graduated cylinder from 15.00…

A:

Q: A gold cube is 150.00 mm long, 10.00 cm wide, and 0.95 m thick. If gold has a density of 19.3g/cm^3,…

A: The density of any substance is defined as the ratio of its mass to the volume of the substance.

Q: A piece of metal ore weighs 8.75 g. When a student places it into a graduated cylinder containing…

A: The density of the ore is to be calculated

Q: A student is determining the density of an unknown metal with a mass of 232.0 g. The student…

A: Given, the mass of unknown metal = 232.0 g Now calculate the volume of unknown metal is determined…

Q: A rectangular block of iron was found to be 19.00 cm wide, 0.31500 m high, and 720.026 mm deep.…

A: In the given problem, first we need to convert the height and width in cm. Then we use the formula…

Q: You can identify a metal using its density. If you have a metal brick that you measured to be 4…

A:

Q: A graduated cylinder contains 10.00 mL water. A 14.74 g piece of aluminum is added to the water, and…

A: Given : Initial volume of water (before adding aluminium piece) = 10.00 mL Final volume of water…

Q: How many acres are in nine hectares? Express your answer using four significant figures. One hectare…

A: We have to predict the area in acres.

Q: An unknown liquid sample was poured into a graduated cylinder until the bottom of the meniscus…

A: Density is physical quantity , that is specific for a substance . It is defined as mass of substance…

Q: A sample of an unknown ore weighing 1.275 kg is found. When the sample is placed into a large…

A: Given that : Mass of the sample = 1.275 kg = 1275 g When the sample is placed into a large graduated…

Q: The mass of a piece of metal is 28.3055 grams. When the piece of metal was dropped into a graduated…

A: Given information: Mass of metal piece = 28.3055 g Initial volume = 7.34 cm3 Final volume = 9.84 cm3

Q: The maximum dosage of medicine A is listed as 20.0 mg per kg of body weight per day. The adult…

A:

Q: A piece of metal ore weighs 9.00 g. When a student places it into a graduated cylinder containing…

A: Given:Mass of piece of metal = 9.00 g = 9.00x10-3 Kg.Volume of cylinder without metal piece = 21.25…

Q: A graduated cylinder plus its contents has a combined mass of 20.06 g. The graduated cylinder has a…

A:

Q: metal sample with a mass of 0.073 kg is placed in a graduated cylinder that contains 60 ml of water.…

A: Density = Mass/Volume 1 Kg = 1000 g

Q: Diamond has a density of 3.52 g/mL. What is the volume in mL of a diamond with a mass of 15.1 g?…

A:

Q: How much does a copper sphere with a radius of 12.0 inches weigh in pounds? The density of copper is…

A: Given:Radius of copper sphere = 12.0 inDensity of copper = 8.96 g/cm3

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.