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: 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: 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: 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: Beer is often sold by the keg, which has a volume of 15.5 gallons.  How many liters is in a keg?…

A:

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

A:

Q: The mass of an object was found to be 28.90 g. When this object was dropped in a graduated cylinder…

A: Given, mass of object =28.90 gramthis object was dropped in a graduated cylinder partially filled…

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: 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 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: The density of an object was 2.622 g/in3. What was the density in g/cm3? There are 2.54 cm in an…

A: 1 g/in3 = 1 g /(2.54 cm)3          (since 1 in = 2.54 cm)             = 1/(2.54)3 g/cm3…

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: A 100.0 mL graduated cylinder was used to measure the volume of water. The initial volume of the…

A: Given:Mass of coin = 96.51 g.Volume of coin = final volume – initial volumeVolume of coin = 56.0 mL…

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

A: SOLUTION Given values, Mass of cylinder = 32.154g Initial volume of water  = 15.9 mL Density of…

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 long ton is defined as exactly 2240 lb. If a shipment weighs 12.565 tons how much does it weigh in…

A: Unit conversions. 1 long ton = 2240 lb 1 lb = 0.4536 kg   1 long ton = 2240×0.4536 kg = 1016.06 kg

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 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: a 0.732kg sample of gold is added to 100.0mL of water. the density of gold is 19.32g/mL. what is the…

A:

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: 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: a sample of iron ore has a density of 7.87 g/mL. if it measures 7.0 cm x 1.93 cm x 5.15 cm, what is…

A: The question is based on dimensional analysis. we have been given dimensions of iron and its…

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: A piece of metal ore Weights 5.00 g. When a student places it into a granduated cylinder containing…

A: Density of substance= Mass of substanceVolume of substanceGiven mass of metal ore = 5.00 g

Q: Beer is often sold by the pony keg, which has a volume of 7.75 gallons.  How many liters is this?…

A:

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:

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.