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divide the density of the element by its atomic weight and you'll get the number of atoms per centimeter cubed
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∙ 13y ago
Wiki User
∙ 12y agomass/volume=density
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Estimate the number of gold atoms in a gold coin with a diameter of 1 cm and a thickness of 1mm?
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.
How do you calculate the atomic weight of a metal using its atomic radius and density?
Given the density, you can find the volume per mole of metal by taking dividing the molarity by the density. Using this, you can find the volume of a mole of atoms (this is a different value) by multiplying to the volume per mole of the metal by the packing efficiency. Next, divide the volume of a mole of atoms by the Avagadro's number. Then, using the volume of a sphere, you can find the radius. Here's a better explanation using formulas: Volume per mole of metal = Molarity/Density Volume per mole of atoms = (Volume per mole of metal) x (Packing Efficiency) Volume of 1 atom = Volume per mole of atoms/6.022 x 1023 Volume of 1 atom = (4/3) x pi x radius3
What other element besides water has a low density?
1) Water is not an element, a water molecule is made of three atoms of two elements. 2) Water has a density of 1 (1Kg/L). From that you should be able to work out average densities, although it depends on what you call a 'low density'. Oil, for example, is lighter (less dense) than water, although compared to H2, oil is fairly heavy.
Why do chemists use relative comparisons of masses of atoms?
because atoms from each element is different. relative masses of atoms is like their identity. it gives information on their weight, their density, their number of subatomic particles(protons and neutrons) and etc, etc. most importantly, relative masses of atoms allows chemist worldwide to accurately communicate with each other the amount as well as the composition of compound used in their reactions.
What does subscript tell you in an ionic compound?
look crazys all you have to do is go look it up b/c this is not going to get you the answers lazy people u need to work for it now look it up on google not answers .com lamo
What two quantitiesdo you need know in order to calculate density?
If you don't know this you can work it out from the units: Density = kg/m^3 (kilograms per metre cubed) Mass is measured in kilograms Volume is measured in metres cubed You therefore need mass and volume to work out density.
A granite sculpture weighs 5.4 kilograms and has a volume of 2000cm cubed work out the density of granite give your answer in grams per cm cubed?
density = mass / volume So first 5.4 kg = 5400 g since we need our answer in grams/cm cubed. Now 5400/2000 = 2.7 g/cm3
Can you show work finding density with a mass of 155 pounds and volume of 4.2 ft cubed?
155 pounds per 4.2 ft cubed = 155/4.2 = 36.905 pounds per cubic foot.
How do you work out 5 cubed?
times the number you are by itself five times for example 25= 2x2x2x2x2=64
How do cubic numbers work?
A cubed number just means the is multiplied by itself 3 times. 23= 2*2*2=8 If it's a variable cubed then just add and subtract as if it didn't have the cube, but ONLY if the other number is that same number cubed. 2x3+5x3=7x3 because 2+5=7
What is the density of an unknown substance if the mass is 5.0 and the volume is 1.5?
see density is simply the number of particles(atoms,molecules) in a unit space(volume).The greater the no of particles in an area the greater the density. The formula of density can be denoted as-mass/volume which in your case is->m=5 units & v=1.5 units so if you can work this out - 5/1.5 unit you'll get the ans(3.333.....)
How do you work out the mass of a cylinder?
Area of cylinder base = pi x Radius squared (πr2) Radius is in centimeters (cm) Area is in centimeters squared (cm2) ---- Volume = Area x Height Area is in centimeters squared (cm2) Height is in centimeters (cm) Volume is in centimeters cubed (cm3) ---- Mass = Volume x Density Density is in grams centimeter cubed (g/cm3) Volume is in centimeters cubed (cm3) Mass is in grams (g)
How do you you work out the number of neutrons in an atom?
Atomic Mass minus atomic number
How do you work out an atoms atomic number by looking at its electronic structure?
Count the total number of electrons.
How do you work out 15 cubed?
15 cubed means 15 times itself three times (15x15x15). 15 cubed is equal to 3,375.
What is a unique subtance composed of atoms having the same atomic number?
A element is a unique substance that is composed of atoms having the same atomic number. Energy is the ability to do work.
Estimate the number of gold atoms in a gold coin with a diameter of 1 cm and a thickness of 1mm?
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.
