Since the penny was minted in 1969, only 95.00% by mass of the penny is copper. If the had a mass of 3.110 g, what is the mass of copper in the metal? penny How many moles of copper metal are in the penny? How many atoms of copper are in this many moles of copper?

Q: Consider Titanium. It is a metal with the same strength as steel, but it is 45% lighter. It is also…

A: The molar mass of titanium is 47.867g/mol Thus, the mass of 1 mol of titanium is 47.867g

Q: What does the mole concept provide?

A: Mole concept gives the idea of calculation of moles. Mole is a commonly used unit for measuring…

Q: Suppose 1.00 mole of pennies (each penny is 0.0598 inch thick) is stacked one  atop another to make…

A: 1.00 mole of pennies = 6.023 x 1023 number of pennyeach penny is 0.598 inch thickThus Length of pile…

Q: how many grams of mercury are in 9 moles of mercury ?

A: By using mole concept , number of moles is given as below: number of moles=mass in gMM in…

Q: mass

A: moles of Compound = ( mass of Compound / molar mass of Compound )  Mass of the Compound = moles of…

Q: How many atoms of neon are in 5.8 moles of neon gas?

A:

Q: A prospector panning for gold in a river collects 15.00 g of pure gold. How many Au atoms are in…

A: Given information,          Mass of gold is 15.00 g

Q: A pure silver ring contains 4.55×1022 silver atoms. How many moles of silver atoms does it contain

A: A mole of a substance is equal to as many entities (atoms , molecules and ion ) as there are number…

Q: If the rust found spread over the surfaces of a steel car body contains a total of 2.331×1023 oxygen…

A:

Q: How many moles are in 11.9 grams of argon (Ar)?

A:

Q: The mass in grams of one argon atom

A:

Q: The density of helium in a balloon is 1.18 g/L. If a balloon holds 2.99 L of He, how many atoms of…

A:

Q: A piece of jewelry requires 0.703 moles of silver. How many grams of silver is needed?

A: Given Moles of Silver is 0.703 moles.

Q: In an experiment, a specific amount of KClO3 is allowed to decompose to produce 4.40 g of KCl. How…

A: Given Mass of KCl produced = 4.40 g To find Mass of O2 produced in the experiment.

Q: What is the mass of 1.213 × 10^8 mol S?

A: Mass = 3.88× 109 grams

Q: Why is the mass of a mole of carbon atoms 12 times that of a mole of hydrogen atoms?

A: The solution is as follows:

Q: A gallon of water has a mass of 3.79 kg. How many moles of water (18.02 g/mol) is this?

A: Given : Mass of water = 3.79 Kg  And molar mass of water = 18.02 g/mol

Q: How many atoms are there in 2 moles of Calcium

A: Number of moles of calcium = 2 moles  Number of atoms of calcium = ?

Q: A student started with a sample of an element X of 10.34 grams. The mass of oxygen is 1.59 g. given…

A:

Q: Uranium-233 undergoes alpha decay to form thorium-229. The mass loss during this reaction is 0.0055…

A: According to the Einstein mass-energy relation, the mass can be converted into energy. The relation…

Q: O3

A:

Q: Determine the mass, in grams, of 0.710 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: Calculate the mass, in grams, of 6.556.55 mol of argon, Ar   mass of Ar:      g   Calculate the…

A: Given, Moles of Ar = 6.55 mol   Mass of Ar can be calculated as :

Q: Element Kittypurrium (named after one of TA's cats) has two isotopes: Isotope 1 has an atomic…

A: Percent of isotop 1 = 91.162%   Atomic weight of isotop 1 = 40.005 g/mol  Percent of isotop 2 =…

Q: How many atoms would be in 0.75 moles of aluminum?

A: The question is based on  mole concept. it involves calculation of number of atoms based on number…

Q: 2) How is the mole similar to a dozen?

A: (2) Answer- A mole is a unit of counting particles such as atoms, molecules, ions etc. which…

Q: The molar mass unit is gram per mole

A: Molar mass: It the mass of chemical substance that is present in one mole amount of substance.

Q: A sample of a compound synthesized and purified in thelaboratory contains 25.0 g hafnium and 31.5 g…

A: GIVEN: Mass of Hafnium = 25.0 g Mass of tellurium=  31.5 g Mass of Hafnium present in the sample…

Q: 15 How many atoms of Aluminum are in 6.95 moles of Aluminum?

A:

Q: Which of the following has the largest moles of oxygen per mole of the molecule?

A: 1 mole of any substance = avogadro number of particles                                          =…

Q: A gold ring contains 3.01 x 1023 atoms of gold, Au. How many grams of gold are in the ring?

A: The number of moles (n) of a substance is calculated by dividing its number of atoms (No) by…

Q: If you have a ring that contains 1.94 g of gold, how many moles of gold are in that ring?

A: Number of moles = mass / molar mass

Q: What is the mass of 9.455* 10^-3 mol of P4?

A: Given- Mole of P4 = 9.455 x 10-3 mole To find- Mass of P4

Q: In a mass spectrometry experiment, the instrument senses the of particles traveling from the…

A: We have to predict the correct option for particles .

Q: If you have 2.01 kg of Ar how many moles of Ar do you have

A:

Q: A The total mass of the system will be the same because the atoms were only rearranged. The total…

A: A closed system is the one which do not allow any transfer of mass or energy to the surrounding.

Q: When a 19.34 gram piece of lithium is placed in a sample of water, how many grams of hydrogen gas…

A:

Q: Erbium (Er) is element 68 on the periodic table. A sample contains 2.58×1025 atoms of Er. Calculate…

A:

Q: A platinum block is made with 0.017 mole of the metal. How many platinum atoms are there In the…

A: Given that the number of moles of platinum is 0.017 mol. Number of atoms of platinum can be…

Q: What is the mass of 1.595 moles of argon?

A:

Q: How many atoms of Cu are in 5.78 moles of Cu?

A: 1 mol of a substance contains 6.022 × 1023 atoms

Q: A 21.37 gram sample of an unknow element contains 0.3267 moles what is the identity of the element

A:

Q: What is the mass of  2.55 moles of water?

A: Given, Moles of water = 2.55 moles Molar mass of water = 18 g/mol

Q: What is the significant figure in 450.707g/mol

A: significant figures can be calculated by following some rules.  given, 450.707 g/mol

Q: What is the mass of 2.561 mol of gold?

A: A pinch of salt contains as many particle of NaCl that cannot be counted as such. The unit Mole (…

Q: What is the representative particle, mass(g), no. of particles of carbon dioxide

A: 1mole of any substance contains 6.023*1023 molecules or particles, it is also called one avagadros…

Q: 5. A 25.5L balloon holding 3.5 moles of carbon dioxide leaks. If we are able to determine that 1.9L…

A: The initial volume of the balloon is = 25.5 L The initial moles of carbon dioxide in the balloon is…

Q: The density of helium in a ballon is 1.18g/L. If a balloon holds 2.81L of He, how many atoms of He…

A: Given : density of helium = 1.18 g/L volume of helium = 2.81 L

Q: How many moles of gold are 8.5 x 1024 atoms of gold?

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.