From 1962 until 1981 pennies were made from 95% copper and 5% zinc and had a mass of 3.1 g. Starting in 1982, pennies have been made from 97.5% zinc and 2.5% copper and have a mass of 2.5 g. Suppose you have a sample of pennies that consists of 23.8% pre-1982 pennies. Determine the average mass of a penny in this sample.   Average mass=           grams

Q: At a fast food restaurant, they can give you a free water cup of 16 oz. Convert this quantity to…

A:

Q: express this volume in cubic inches.

A: We have,          1 L=1000cm3        and 1 inch =2.54cm.

Q: You have a 100 gram sample of each of the following metals. Which sample has the largest volume? A)…

A: The given mass is 100 gram and we know that density is equal to mass by volume. So, volume will be…

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: Mass of Empty Beaker: 44.653 g Mass of Beaker and Metal sample: 124.411 g Initial volume of water…

A:

Q: A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt.…

A: Given : concentration by % of solution A = 60 % Concentration by % of solution B = 85 %.…

Q: A student poured 4.6 mL of water into a test tube. She marked the level of the water on the test…

A: A) option is correct

Q: Densities of some common substances g/cm Aluminum 2.70 Соpper 8.96 Iron 7.87 Lead 11.4 Water 1.00…

A:

Q: A brownie contains 1.30 x 102 mg of sodium. What is this mass in units of grams?

A: 1 mg = 10-3 g

Q: Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side…

A: ⊙ we know,   Density=massvolume⊙volume of cube-(edge length)3

Q: A person has a BMI of 19.1 kg/m2. What is this in Ib/ft? A) 42.1 Ib/ft? B) 5.82 Ib/ft? C) 3.91…

A: Density = mass/volume  Volume of cube = length × breadth × height

Q: A certain liquid has a density of 2.67 g/cm 3. 30.5 mL of this liquid would have a mass of how many…

A: The relation between the mass of substance and space occupied by it is defined by the term density.…

Q: A mixture is made by adding 20.42 g of substance A, 1.322 g of substance B, and 83.1 g of substance…

A: • The values provided in the question are:-       i) Mass of substance A = 20.42 g    ii) Mass of…

Q: Ethanol is a common laboratory solvent and has a density of 0.7890.789 g/mL. What is the mass, in…

A: The mass of an ethanol is to be determined from the given volume and density. It seems like the…

Q: A 25.5 g sample of a metal was placed into water in a gradu- ated cylinder. The metal sank to the…

A: The given data contains, mass = 25.5 g. volume ( initial ) = 15.7 ml. volume ( final ) = 25.3 ml

Q: a small sheet of aluminum metal (?=2.70 g/cm3). The sheet had a mass of 1.3648 g, a length of 2.05…

A:

Q: The density of an object is 0.072 g/mL. Calculate the mass of this object (g) if it displaces 150.0…

A: Given: The density of an object = 0.072 g/mL The volume of water displaced by the object = 150.0 mL…

Q: You have three objects of varying shapes and sizes: Object 1 is a rectangular block of tin. Object 2…

A: Given: Volume of copper = 335 cm3 Density = 8.96 g/cm3

Q: A bank teller is asked to assemble “one-dollar” sets of coins for his clients. Each set is made of…

A: A bank teller is asked to assemble “one-dollar” sets of coins for his clients. Each set is made of…

Q: The average mass of a mouse is 0.68 ounces. What is this mass in kilograms? 1 ounce=28.35 grams

A:

Q: The density of aluminum is 2.70 g/cm3. The mass of a solid piece of aluminum is 3.32 g. What is its…

A:

Q: B. 0.108 lbs/in3 C. 534 lbs/in3 D. 0.697 lbs/in3 2.)The density of an alcohol is 0.788 g/mL. What…

A: Density = 19.3 g/cm3  Density = lbs/in3

Q: A piece of rebar is weighed and then submerged in a graduated cylinder partially filled with water,…

A: The quantities which come across during the scientific studies are named as physical quantities. The…

Q: 4. Classify each substance by composition, first as mixture (MX) or a pure substance (PS): sugar…

A: Sugar = PS , C                  As it is compound made of carbon , hydrogen and oxygen. Granite =…

Q: Two identical sized sheets of copper and gold are placed side by side on a table. If the copper…

A: Density of gold is 19.3 g/cm3 & density of copper is 8.96 g/cm3. Now, let the cross sectional…

Q: The mass of acetic acid in a 2.00 mL sample of vinegar (density of the vinegar is 1.00 g/mL) is…

A: Volume of vinegar solution = 2.00 mL  Density  = 1.00 g/mL

Q: 25.00 g sample of a solid is placed in a graduated cylinder and then the cylinder is filled to the…

A: Use formula density= mass/volume

Q: Osmium has a density of 22.6 g/m. The mass of a block of osmium that measures 1.01 cm x 0.233 cm x…

A: The density of a substance at the standard conditions is given by: Density = Mass of…

Q: Three 10 mL samples of gold weighs: 193.119 g, 193.122 g, and 193.161g, respectively. Which sample…

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

Q: An iron cannonball with a density of 7.86 g/cm3 is on display at a military museum. The cannonball…

A: Given: The density of the ball is 7.86 g/cm3. The volume is 115 cm3. The mass of the ball has to be…

Q: to The gasoline in an automobile gas tank has a mass of 60.0 kg and a density of 0.752 g/cm³. What…

A: Given,Mass of 60 kg = 60000 gDensity of 0.752 g/cm3.

Q: How do you fint the volume of an element, given the density and mass.  For example, "Determine the…

A: The volume of an element can be calculated from the given below formula if its density and mass are…

Q: 2. For this question you'll need to perform calculations for the data listed below. Imagine you…

A: The solution of the question is given below:

Q: The largest single rough diamond ever found, the Cullinan Diamond, weighed 3106 carats. One carat is…

A: Given that:-     Weight of diamond=3106 carats      Mass of diamond in mg=?

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: Calculate these masses. (a) What is the mass of 6.00 cm 3 of sodium, density = 0.97 g/cm 3 ? (b)…

A: Step : 1           Calculate these masses.          (a) What is the mass of 6.00 cm 3 of sodium,…

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

A:

Q: II) Density a) What is the mass of a rectangular piece of aluminum 160.6 cm × 140.8 cm × 15.2 cm?…

A: • Density=massvolume• mass = clensity×volume• volume of rectangle = l×b×h…

Q: A piece of chalk has a volume of 23 cubic centimeters and a mass of 46 grams. What is its density? *…

A: Density is the ratio of mass of the substance to its volume.

Q: Vegetable oil has a density of 0.92 g/cm³. Which of these substances would float on vegetable oil?…

A: Given: Density of the vegetable oil = 0.92 g/cm3. The phenomenon of floating depends on the…

Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three…

A: The data given is,   Before After distilled water 57.160 g 70.990  g sodium acetate 70.990…

Q: A wooden rectangular block has the following dimensions: 52cm x 0.88 m x 22cm. The density is…

A: l = 52 cm , b = 0.88 m = 88 cm , h = 22 cm  Volume Rectangular box  V = lbh      = 52 cm × 88 cm ×…

Q: If a cube of gold has a length of 2.50 cm, what is the mass of the gold sample? Convert 19.3 g cm-3…

A: Given that: Length of  gold cube = 2.50 cm Density of gold = 19.3 g/cm3 Volume of cube = (length)3 =…

Q: (2) Using your result in question (1), determine the mass in grams of 0.50 Gal of ice cream. This…

A: Given : Mass of ice cream in g = 1.197 X 103 g

Q: What is the mass of 1.91 x 10^23 atoms of nitrogen? ____ grams What is the mass of 3.91 x 10^23…

A: Since moles of any atom = number of atoms / Avogadro's number And moles of any molecules = number of…

Q: At room temperature the element bromine, Br2, is a liquid with a density of 3.12g/cm3 . Calculate…

A: Density is defined as the mass of the substance per unit volume. Bromine is a liquid at room…

Q: Substance A has a density of 0.30 g/ml and substance B has a density of 0.690 g/ml. Are the…

A: Density of a substance is defined as it mass per unit volume.The density (d), mass (m) and volume…

Q: Calculate these masses.(a) What is the mass of 4.00 cm3 of sodium, density = 0.97 g/cm3 ?(b) What is…

A: (a)

Q: A brick of a certain metal has area on top of 3.54 cm x 6.93 cm. It has mass 921 g. How high is the…

A:

Q: A sphere with a radius equal to 15.6 meters and a mass of 415 kilograms has what density? O…

A: Given information,    Radius of sphere = 15.6 m = 1560 cm    Mass of sphere = 415 kg = 415000 g

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.