A star is estimated to have a mass of 2 x 10 kg. Assuming it to be a sphere of avera radius 7.0 x 10° km, calculate the average density of the star in units of grams per cub centimeter.

Q: If a block of copper measures 2.00cm x 4.00 x 5.00cm and weighs 356g, what is the density of the…

A: => Volume of copper block = (2.00 cm x 4.00 cm x 5.00 cm ) = 40.0 cm3

Q: The concentration of mercury in a polluted lake is 0.33 micrograms per liter of water. What is the…

A: Given,Volume of the lake = 1.5 x 1012cm30.33 micrograms per liter of water

Q: If mercury (density = 13.6 g/cm3) at a height of 895 mm Hg in a mercury barometer is replaced with…

A: According to Boyle's law temperature remaining constant ,the volume of a given mass of a gas is…

Q: 4. The density of a proton is approximately 4.0 x 1014 g/cm°. If the mass of the proton is 1.7 x…

A:

Q: Lithium is a soft, gray solid that has the lowest density of any metal. It is anessential component…

A: Density can be calculated by taking ratio of mass and volume. So, first convert the given mass in…

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: The density of iron is 7.87 g/mL. What is the mass of a 2.00 cm x 4.00 cm x 1.00 cm block of iron?…

A:

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: A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere with an average radius…

A: First, volume of sphere with given radius 7.5x105km is determined as follows,

Q: A rectangular piece of platinum has dimensions of 3.50 cm x 2.16 cm x 1.08 cm and weighs 175.5 g.…

A: Formula: Density ( D) = Mass (M)  \ Volume (V)

Q: Given the density of Au is 19.3 g/cm3, determine the mass of gold (in grams) in an ingot with the…

A:

Q: A meteor has a volume of 9235 ft3 , what is the mass in kg of the meteor if the density is 0.92…

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: 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 block of iron (density = 7.87 g/cm³) has dimensions of 4.25 cm x 5.80 in x 1.48 ft. Calculate its…

A: Given,  The density of a block of iron is 7.87 g/cm3, The mass of block of iron when it has…

Q: What is the density of lithium metal in g/cm3, if a cube measuring 0.82 cm x 1.45 cm x 1.25 cm has a…

A: Mass of a cube = 0.794 g  According to given values ,Let's assume :  Length of a cube = 0.82 cm…

Q: a thin sheet of lead measures 15.5 cm by 23.0 cm and weighs 0.627 g. if the density of lead is 11.34…

A: Given information is as follows: Length of the lead sheet = 15.5 cm Width of the lead sheet = 23.0…

Q: The total amount of fresh water on earth is estimated to be 3.73 x 108 km3.  What is this volume in…

A:

Q: Jupiter’s mass is estimated to be 1.90 x 1027 kg, and it has a diameter of 142,984 km. Assuming that…

A: Density (d) , mass (m) and volume (V) are related as:

Q: mi/hr

A:

Q: The density of the organic compound benzene is 0.879 g/mL.Calculate the mass in grams of 1.00 qt of…

A: Given information,    Density of benzene is 0.879 g/mL.    Volume of benzene is 1.00 quart

Q: To determine the density of an irregularly-shaped solid, a student immersed the object in 25.0 mL of…

A: To solve this problem we have to find the volume of object and then we will able to calculate the…

Q: If a block of copper measures 2.00 cm x 4.00 cm x 5 cm and weighs 356 g, what is its density?

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

Q: The density of air at ordinary atmospheric pressure and 25 degrees Celsius is 1.19 g/L. What is the…

A: Given that density of air = 1.19g/L  Dimensions of room = 14.5*16.5*8.0 feet

Q: The density of aluminum is 2.70 g/cm3. if 10.00 g of aluminum pellets is added to a graduated…

A: Density is a measure of mass per unit volume. The average density of an object equals its total mass…

Q: A block of lead has dimensions of 4.5 cm by 5.2 cm by 6 cm. The block weighs 1587 g. From this…

A:

Q: A rectangle lead apron is placed over the chest of a patient while X-rays are taken in a dental…

A: The volume of the rectangle is calculated as shown below where l, w, and h are the length, width,…

Q: A block metal has a volume of 13.4in^3 and weighs 5.22lb. What is its density in grams per cubic…

A:

Q: If a sample of clay has a density of 1.7 g/cm3 and it takes up a volume of 0.43 cm3, what is its…

A:

Q: How many cubic feet are there in a room measuring 6m x 10m x 3m?

A: Cubic feet is calculated by measuring the height,width and length.

Q: . Suppose you measure the weight of a metal to be 160.5 g and then you place it in a graduated…

A: Mass of metal = 160.5g  Volume of solid metal and liquid = 248.2ml Volume of (metal + water) =…

Q: Molecular distances are given in nano-meters, where 1nm is equivalent to 1 x 10-9 meter. If the…

A:

Q: he volume occupied by the egg whites from four “large” eggs is 112 mL. The mass of the egg whites…

A: Given : volume of 4 egg whites = 112 mL And mass of 4 egg whites = 120 g

Q: A sample of iron bar has a density of 7.87g/in^3. If the bar measures out to be 17.1mm x 6.6mm x…

A: Density of the iron bar = 7.87 g/ in^3.Volume of the iron bar = 17.1 mm x 6.6 mm x 5.3 mm = 598.158…

Q: The density of iron is 7.87 g/mL. What is the mass of a 3.00 cm x 3.00 cm x 2.00 cm block of iron?…

A: The given question is based on the concept of density. Density is defined as the ratio of mass of…

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: You are given the length and width of 10.5 in by 8.5 in. Upon weighing, it comes out to be 0.885 g.…

A: Given,Dimensions are 10.5 inch by 8.5 inch.Density is 1.10g/cm3Mass is 0.885 g.Thichkness = ?

Q: 1.100 What is the density of lead in g/cm³ if a rectangular bar measuring 0.50 cm in height, 1.55 cm…

A: The density of lead in g/cm3 is to be calculated.

Q: 8. The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm.…

A: Given, Distance between the centres of two oxygen atom in an oxygen molecule (d)= 1.21 × 10-8 cm…

Q: A piece of metal weighing 305.5 g is placed in a graduated cylinder containing 241.3 mL of water.…

A: Mass of the metal = 305.5 gVolume of the metal = volume of the water displaced = 269.5 mL – 241 mL =…

Q: If the density of baking soda is 2.1 g/mL, how many grams of baking soda are present in 5.0 mL (the…

A: the product must contain 2 significant figure as bot of the multiplicand have 2 significant figure

Q: The mass of an empty 10ml graduated cylinder is 8.6g. What is the mass of a graduated cylinder with…

A: The given data is: Mass of an empty 10 mL graduated cylinder is 8.6 g Volume of water = 10 mL…

Q: the radius of a neon atom is 6.9 x 10 ^-2 nm, and its mass is 3.35 x 10^-17 micrograms. what is the…

A: 6.9 * 10-2 nm = 6.9 * 10-12  m  We know that formula of volume of sphere  = 4/3 πr3  As 1 meter =…

Q: If a sample of unknown substance has a mass of 3.50 kg and a volume of 1.30 L, what is the density…

A: Given : Mass of substance = 3.50 Kg = 3500 g…

Q: a thin sheet of nickel measured 5.00 cm by 7.00 cm was found to weigh .350 g. if the density of…

A:

Q: The density of titanium is 4.54 g/mL. What is the mass, in grams, of 17.3 mL of titanium? Check your…

A: Given: density of titanium = 4.54 g/mL Volume of titanium = 17.3 mL

Q: A chemistry student needs 35.0 mL of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given, volume of dimethyl sulfoxide = 35.0 mL  1 cm3 = 1 mL  35.0 cm3 = 35.0 mL  Density of dimethyl…

Q: A star is estimated to have a mass of 2 x 1036 kg. Assuming it to be a sphere of average radius 7.0…

A: Given:m = 3 x 10³⁶ kg, the mass of the starr = 7.6 x 10⁵ km = 7.6 x 10⁸ mCalculate the volume 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.