A chemistry student needs 90.0 mL of pentane for an experiment. The student discovers the density of pentane is 0.626g•cm^-3. Calculate the mass of pentane the student should weigh out. Round your answer to 3 significant digits.

Q: A student is determining the density of an unknown metal with a mass of 32.56 g. The student…

A:

Q: A chemist dissolved 7 grams of a substance in water. The resulting solution has a mass of 15 grams…

A: A solution consists of solute and solvent. A solute is defined as the component that is present in a…

Q: Mass= 1.00 lb volume= 500 cm^3 calculate the density in grams per cubic cemitermiter

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

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 rectangular block has dimensions 2.9 cm × 3.7 cm × 12.8 cm. The mass of the block is 609.0 g. What…

A: Dimensions = 2.9*3.7*12.8 Volume = product of dimensions (length*breadth*height) = 137.344 cm3

Q: The density of aluminum is 2.70 g/cm3. A square piece of aluminum foil 22.86 cm on one side weighs…

A: Here we are required to find the thickness of aluminum foil.

Q: Question attached

A: Accuracy It deals with how the data matches with the true data. Closer the data is to an accepted…

Q: A brick of metal has these dimensions:  7.07 in  x 9.20 in x 7.15 in.  It has mass 8.1 kg.  What is…

A:

Q: The density of water is approximately 1 g/cm³. Which of these substances will sink in water? A)…

A: Explanation :- More than 1 g/cm3, it will Sink in water.

Q: Under certain conditions, the density of dry air is 1.205 g/L. What is the mass of air in a room…

A:

Q: Mercury metal is poured into a graduated cylinder to exactly 22.5 mL. The mercury used to fill the…

A: Given information: Volume = 22.5 mL Mass of empty graduated cylinder = 12.0 g Mass of mercury +…

Q: A piece of aluminum foil has a mass of 0.200g and measures 5.00cm by 2.15cm^3. If the density of…

A: Given,Mass of aluminium foil = 0.200 gDensity of aluminium foil = 2.70 g/cm3The volume of the…

Q: The single proton that forms the nucleus of the hydrogen atom has a radius of approximately 1.0 x…

A: Given, Radius of the nucleus = 1.0 x 10-13 cm ( 1.0 x 10-15 m) Radius of the hydrogen atom = 52.9 pm…

Q: Measurement of the density of water. Weigh a small beaker (degree of precision?). Place about 25 mL…

A:

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: 1.  Mass of bar of gold = M = 2060.5 g  Dimensions = 7.30 cm by 3.25 cm by 4.50 cm Volume = 7.30 cm…

Q: What is the density of a block of metal that measures 62.88cm by 34.220cm by 5.18cm and has a mass…

A: Given is, block of metal that measures 62.88cm by 34.220cm by 5.18cm  Mass= 24,983.44 grams

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: An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to…

A: Density :-  The ratio of mass of a substance to the volume occupied by that substance under the…

Q: 4) For the displacement of the metal, ethanol (d 0.79 g/mL) was mistakenly used in the liquid in the…

A: Density is defined as the mass of the object upon the volume of occupied by the object   density d=…

Q: A.Measurement of the density of water.Weigh a small beaker (degree of precision?). Place about 25 mL…

A: Here we need to calculate the density of the water. We know that, density is defined as the mass per…

Q: copper wire is 33.99 cm long and weighs 1.621 g. The density of copper is 8.933 g/ cm^3. What is the…

A: Volume of wife is =πr2l Density=mass/volume  Use this formula to get the answer

Q: A rock weighing 87.9 grams was placed in 115 ml of water. The level of the water rose to 154 ml.…

A:

Q: Ultrapure silicon is used to make solid-state devices, such as computer chips.  If the volume of a…

A:

Q: If the density of an unknown object was found to be 1.44 x 10−4 pounds (lbs) per cubic inch, what is…

A: Given,  If the density of an unknown object was found to be 1.44 x 10−4 pounds (lbs) per cubic inch,…

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: If the volume of a cube is 21.8 cm3, what is the volume in cubic feet? 54 cm = 1 in, 12 in = 1 ft

A: Given data : Volume of cube = 21.8 cm3 The formula for calculating the volume of cube is  V =…

Q: A waterbed filled with water has the dimensions 8.0 ft x 7.0 ft x 0.75 ft. Taking the density of…

A: Given: The dimensions of the waterbed = 8.0 ft × 7.0 ft × 0.75 ft The density of water = 1.00 g/cm3…

Q: An empty beaker weighs 39.81 g. When completely filled with water, the beaker and its contents have…

A: Given:  The mass of an empty beaker = 39.81 g The mass of the beaker when it is completely filled…

Q: An empty beaker weighs 42.77 g. When completely filled with water, the beaker and its contents have…

A: Since you have posted  multiple questions in a single session. we are entitiled to answer only first…

Q: A chemist weighs herself on a scale and records a mass of 65.1 kg. She removes a calculator and…

A: Given : Mass of chemist with calculator = 65.1 Kg = 65.1 X 103 g                   (Since 1 Kg =…

Q: What is the volume of a box in cm^3 if its dimensions are 7 inches x 7.7 inches x 10.7 inches? 1…

A: Given dimensions has to be converted from inches to cm.

Q: A brick of metal has these dimensions: 4.13 in x 5.57 in x 4.01 in. It has mass 11.1 kg. What is the…

A: Metal Brick dimension = 4.13 inx 5.57 in x 4.01 in Mass = 11.1 kg

Q: what would be the diameter of a single hair strand has a density of 1.28 g/cm3, mass of 0.30 mg, and…

A: Given: Mass of hair = 0.30 mg = 0.0003 g                                          (Since 1 g = 1000…

Q: The density of a material can be used to calculate the volume of an object if its mass is known.…

A: Given Mass of quarter = 6.25 Density = 10.5 g/ml  Unknown Volume of quarter??

Q: The price and density of gold are $57.70 g-1 and 0.698 lb.in-3, respectively. How much would a cube…

A: Given :  Price of gold = $57.70 per gm  Density of gold = 0.698 lb in-3  Length of cube = 1 m = 100…

Q: An empty beaker weighs 25.49 g. A) When completely filled with water, the beaker and have a total…

A: To solve this we have to use  Density = Weight / Volume  First we calculate the volume of container…

Q: A chemistry student needs 90.0g of carbon tetrachloride for an experiment. The density of carbon…

A:

Q: The prescribed dose of an injected drug is 1.5 mL. If the syringe is graduated in cubic centimeters…

A: Given: The prescribed dose of the drug = 1.5 mL The dose in cubic centimeters or mark of drawing…

Q: A student determined in a set of four experiments that the density of magnesium metal was 1.66…

A: The data is given as follows: 1.66 g/mL, 1.65 g/mL, 1.67 g/mL, and 1.67 g/mL Accepted value for…

Q: 1000 900 800 700 600 500 400 300 200 100 A sample of liquid has a measured volume of 561 mL. 1. How…

A: Given : volume of sample = 561 ml To find : 1). Significant figures 2). Scale divisions in ml 3).…

Q: An irregular-shaped solid was placed into a graduated cylinder containing 50.2 mL of water.The…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: An empty beaker weighs 42.77 g. When completely filled with water, the beaker and its contents have…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: 2. Gold can be hammered into extremely thin sheets called gold leaf. A 200-mg piece of gold (density…

A: Given : Mass of golf = 200 mg Density of golf = 19.32 g/cm3  length of sheet = 2.4 ft  And width of…

Q: A small crystal of sucrose (table sugar) had a mass of 6.170 mg. The dimensions of the box-like…

A: Given: mass of small crystal of sucrose = 6.170 mg dimensions of box (l×b×h), = 2.20 mm x 1.40 mm x…

Q: A chemistry student needs  55.0mL  of diethylamine for an experiment. By consulting the CRC…

A: We know ; Density = mass / volume By using this realtion we can calculate the mass of diethylamine…

Q: A scientist performs an experiment to determine the density of a sugar solution.  He obtains the…

A: Accuracy refers to how closely a measured value relates to the true value. Precision refers to how…

Q: The density of silver is 10.5g/cm^3. What is the mass of a bar of silver in Kilograms, that measures…

A: Density= Mass/volume  Mass=density ×volume.

Q: The density of water is 1.00 g/cm 3. If an object is found to have a density of 0.67 g/cm 3, what…

A: The formula of density is, Density=MassVolume If the density of an object is more than that of…

Q: Gold can be hammered into extremely thin sheets called gold leaf. A 200-mg piece of gold (density =…

A: Given that: Mass of the gold piece = 200 mg The density of gold = 19.32 g/cm3 Measurement of the…

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.