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Work out the volume of the coin first. Then using density formula, mass of this coin can be calculated. From mass find the number of moles. Then Avogadro's number will take care of the rest.

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A gold coin with a diameter of 1 centimeter and a 1 mm thickness has a volume of .07854 cubic centimeters. Gold has a density of 19.30 grams per cubic centimeter. There is 1.5158 grams of gold or 7.7 millimoles or 4.637 E21 atoms.

we dont find thickness of molecule we find the radius of it vander waal radius for gases. first of all we take a beaker (all dimension are known), then we inject molecules of substance but a uniform flow and with the use of atomizer these atoms or molecules settle down on the bottom of beaker layer by layer when we get full bottom covered with molecules then we find thickness of the layer and estimate no. of atoms in layer with the help of different methods and the we divide it with estimated no. of atoms this way we find the diameter of atoms or molecule then we just divide it by 2. more precisely scientist take extreme precautions while performing the above experiments.

the atom diameter ranges from hydrogen atoms to the largest atoms.

We need to know the diameter of the wire to calculate the volume and the mass. Number of atoms is: 2,58.1023.r2, where r is the radius of the wire.

Depending on the thickness of the foil.

The number of atoms in the observable universe is somewhere in the vicinity of 1080. We can't even really estimate the number of atoms outside the observable universe ... it could be zero, or it could be infinite, and we have no real way of knowing which.

One Angstrom is defined as 10-10 centimeters. Therefore, the number of any units with a diameter of 2.2 Angstroms that would be required to span 1.0 cm is 1.0/10 -10 or 4.5 X 109 calcium atoms., to the justifiable number of significant digits.

The number of atoms in the products is the same as the number of atoms in the reactants.

The number of atoms in the universe is estimated at 1078 to 1082. So the number of molecules would be smaller than this, obviously. Reference: http://www.universetoday.com/36302/atoms-in-the-universe/

As in number? No of atoms = avagadros number (6.02X10^23) times number of mole of atoms

The definition of one mole is: It is a number (eg. of particles of any kind), like pi is a number (of ratio from diameter to circle).It is a very big number, symbolised as NA (and named after Avogadro):NA = 6.022 * 1023 (-/mol) or (mol-1)So there are 1.62 * NA = 9.76 * 1023 atoms in a mole(it is not important of what kind the atoms are).

To arrive at the number of hydrogen atoms, double the number of carbon atoms, then add two.

The diameter of an atom is between .1 and .5 nanometers. A nanometer is one billionth of a meter. The diameter of atoms varies depending on the element.

The number of atoms is 6.

None. A line is a 1-dimensional object and so has no thickness. An atom, no matter how small, has a finite thickness and so cannot be IN a line.

100 million helium atoms, being the number (1.0E-2 m)/(100E-12 m).

Atoms of the same element have an identical number of atoms.

Atoms that have the same number of protons but a different number of neutrons are called isotopes.

the atomic number does not equal the number of atoms. the number of atoms is stated in the equation like: H2+O=H2O2 hydrogen atoms 1 oxygen atom the number says all.The atomic number tells the number of protons.

Yes, by definition, atoms with the same atomic number are atoms of the same element.

atoms

Glucose has the formula C6H12O6 so there are 12 hydrogen atoms and 6 oxygen atoms. Thus, the number of hydrogen atoms is 2x the number of oxygen atoms.

balanced equation

The number of atoms is 18,066.10e23.

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