What is the density of lead (in g/cm3 ) if a rectangular bar measuring 0.500 cm in height, 1.55 cm in width, and 25.00 in length has a mass of 220.9 g?

Q: 9. If 86 g of a substance has a volume of 125 cm³, what is the density of the substance?

A:

Q: What is the volume in L of a cube with an edge length of 7.0 dm?

A: Volume can be defined as the amount of the space taken by an object. It represents the ability of an…

Q: If substance A and substance B each have a density of 1.34 g/cm3, must 3 cm3 of A have the same mass…

A: Yes, the mass of 3 cm3 of A will be the same as 3 cm3.

Q: An object weighing 1.840 kg has a volume of 0.0015 m3. What is the density of the object in g/cm3?

A: Given values are,  Mass= 1.840 kg =1840 g Volume =0.0015 m3 = 1500 cm3  Density =?

Q: A). The density of osmium is reported by one source to be 22,610kg/m3. What is the density in g/cm3?…

A: A.) The density of osmium is reported by one source to be 22,610kg/m3. This is to be converted into…

Q: What is the density of a block of wood with a length of 2.00 cm, a width of 4.00 cm and a height of…

A:

Q: High-density lipoprotein (HDL) is a type of cholesterol, sometimes called “good cholesterol,” that…

A: Density is given by the ratio of the mass of the substance to that of the volume.

Q: If a rectangular piece of cement is 2.00 cm x 2.00 cm x 9.00 cm and has a mass of 108 what is its…

A: Given: dimensions: 2.00 cm×2.00 cm×2.00 cm mass = 108 g

Q: . A gold brick is 15.24 cm long, 7.62 cm wide weighs 5,690.0 g. What is the height of the brick?

A: Given that: Length of gold brick (l) = 15.24 cm Width (b) = 7.62 cm mass= 5690.0 g   The height of…

Q: What is the mass of 18 cm cube of iron if the density of iron is 7.87 g/cm ^3?

A: Step : 1             What is the mass of 18 cm cube of iron if the density of iron is 7.87 g/cm 3?

Q: aluminum has a density of 2.70g/cm3. what is the mass of a rectangle block of aluminum measuring…

A: The density of a substance is the ratio of its mass to volume. It is labelled in equation (1) in…

Q: A material will float on the surface of a liquid if the material has a density less than that of the…

A:

Q: b) One sphere has a radius of 5.10 cm; another has a radius of 5.00 cm. What is the difference in…

A: Calculate the difference in volumes of two spheres in cubic centimeters. Given: Radius of one sphere…

Q: A certain person had a brain that weighed 1.45 kg and contained 1.45 x 1010 cells. Assuming that…

A: The length of one side of the cell can be calculated from the volume of one cell.

Q: In determining the density of a rectangular metal bar,a student made the following measurements:…

A: The density of the metal has to be given, Given data:  length=8.53 cm width,=2.4 cm height,=1.0 cm…

Q: What is the radius in cm of a sphere that has a mass of 1.5g and a density of 2.15g/mL?

A: Given, Mass of this sphere (m) = 1.5 g Density of the sphere (d)= 2.15 g/mL Radius of the sphere (r)…

Q: What is its density?

A:

Q: the density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm^3.…

A: The density of mercury is given as 13.6 g/cm3 and it is required to convert this in pounds per cubic…

Q: An irregularly-shaped piece of chromium (Cr) has a mass of 65.0 grams. What is the volume in cm³ of…

A: givenmass of Chromium=65.0 gramsdensity of Chromium=7.19 g/cm3

Q: Given that the air in a building has a density of 1.184 × 10-3 g/cm3, how much does the air weigh…

A: room is rectangular in shape  width = 30.0 feet and 7.0 inches = 30.584 feet  length =41.0 feet…

Q: What is the density of a piece of wood that weighs 50. g and displaces 2.5L of water?

A: Density:The ratio of mass of a sample to its volume is said to be the density.

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: ball of iron weighs 55.265 g and measures 3.00 cm in diameter. What is the density of the iron ball?…

A: The question is based on the concept of physical chemistry. We have to calculate density of the…

Q: What is the volume (in units of m^3) and density (in units of g/mL) of a 325g rectangular block of…

A:

Q: What is the mass of a substance that has a densityof 11.6 g/cm3 and a volume of 35 cm?

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: A backyard swimming pool holds a volume of 190 cubic yards (yd3) of water. How many of the following…

A: Given:A backyard swimming pool holds a volume of 190 cubic yards of water.  The density of water is…

Q: what is the density of a peice of wood that weighs 78 mg and displaces 407 mL of water?

A: The formula used to calculate density is,

Q: If a raindrop weighs 0.52 mg on average and 5.1x10^5rain-drops fall on a lawn every minute, what…

A: Rain drop weights =0.52mg Rain drops fall rate =5.1x105 rain drops minute Mass of water drops per…

Q: In Mexico, avocados are 48 pesos per kilogram. What is the cost in cents of an avocado that weighs…

A: Given: Cost of Avocados = 48 pesos/Kg. And weight of avocado given = 0.25 lbs.

Q: An irregularly-shaped piece of iron (Fe) has a mass of 60.0 grams. What is the volume in cm³ of this…

A:

Q: 5. A rectangular block of an unknown solid has a mass of 441.26 grams and measures 12.00 cm by 3.00…

A: Given, The mass of an unknown solid is 441.26 grams and measures 12.00 cm by 3.00 cm by 1.50 cm.

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: What is the volume of a 88 µg sample of a salt solution, which has a density 1.45g/mL?

A: The density, of a substance is it's mass per unit volume and is denoted by ρ.             ρ = mv

Q: The radius of a barium atom is 2.22X10⁻¹⁰m. What is its ra-dius in angstroms (Å)?

A: Radius of an atom specifies its size. It measures the distance from the center of the nucleus to the…

Q: After taking measurements of a rectangular solid with a mass of 3.84g, you determined the length to…

A:

Q: What is the density of a liquid with a mass of 31.1415 g and a volume of 30.13 cm3?

A: Given,  mass of 31.1415 g and a volume of 30.13 cm3

Q: A 26-meter-tall statue of Buddha in Tibet is covered with 279 kg of gold. If the gold was applied to…

A: given, weight of gold = 279 kg = 279000grams thickness = 0.0015 mm = 0.00015cm density of gold =…

Q: If a lake has a surface area of 13.5 km2 and an average depth of 17.4 m. What is the volume of the…

A: Surface area = 13.5 km2  Depth = 17.4 m  Volume = ?

Q: Titanium is used in airplane bodies because it is strong and light. It has a density of 4.55…

A: Diameter of cylinder is double of its radius. So,by knowing the radius of the cylinder,its diameter…

Q: What is the volume of a 2.5 g block of metal if its density is 4.75 g/cm3

A: Since we know that density is defined as the mass present in per unit volume of the sample Hence…

Q: if your cylinder measured 1.20 cm tall and 0.65 cm in diameter and the mass was 13.4557 g, how many…

A: Given: the height of the cylinder =1.20 cm the diameter = 0.65cm. the mass = 13.4557. The formula…

Q: Substance A has a density of 3.20g/ml and substance B has a density of 2.41 g/ml. If substance A and…

A: Density = It may be defined as mass of a substance per unit volume.Mathematically,

Q: A room has a width of 14.1 feet, a length of 15.5 feet, and a ceiling height of 12.0 ft. If the…

A:

Q: What is the density of a ball with a mass of 561 g and a radius of 5.00 cm?

A: Given;

Q: A steel cylinder has a length of 2.16 in, a radius of 0.22 in, and a mass of 41 g. What is the…

A: Given data: Length of the cylinder (h) = 2.16 inches        Radius of cylinder (r) = 0.22 inches…

Q: An irregularly-shaped piece of aluminum (Al) has a mass of 57.2 grams. What is the volume in cm³ of…

A: Density (g/cm3) = Mass(gram)/volume(cm3) So, volume= mass/density So by the above formula…

Q: What is the volume (in cm3) of a 36.7 g piece of metal with a density of 6.95 g/cm3?

A: Given : Mass of metal = 36.7 g density of metal = 6.95 g/cm3

Q: Calculate the volume of a book with the following dimensions: length = 28.3 cm, width = 22.2 cm,…

A: Volume of the book can be calculated by using the formula given below as; Volume = Length × Width ×…

Q: A cube of plastic 1.3 × 10−5 km on a side has a mass of 2.1 g. What is its density in g/cm3?

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.