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This is actually a chemistry question, but I found it in the math section... well anyways you use an equation with avogadro's number. P(density)=(((#atoms)(molar mass))/((avogadro's number)(volume))). You're solving for #atoms so rearrange the equation. You have density, molar mass, and avogadro's number. As for volume, assuming you know what element this is (which you should know from the molar mass even if it's not given), you should be able to compute volume from the unit cell measurements. If you do not know unit cells... I'm not sure.
What else can I help you with?
How do you find atoms if given molar mass?
To find the number of atoms in a sample when given the molar mass, first determine the number of moles by dividing the mass of the sample by the molar mass. Then, use Avogadro's number (approximately (6.022 \times 10^{23}) entities per mole) to convert moles to atoms by multiplying the number of moles by Avogadro's number. This will give you the total number of atoms in the sample.
How do you find the molar mass of an atom?
To find the molar mass of an atom, you need to add up the atomic masses of all the atoms in its chemical formula. This can be determined from the periodic table. The unit for molar mass is grams per mole.
The molar mass of a certain gas is 49 g. What is the density of the gas in gL at STP?
To find the density of a gas at standard temperature and pressure (STP), we can use the formula: density = molar mass / molar volume. At STP, the molar volume of an ideal gas is approximately 22.4 L. Therefore, the density of the gas with a molar mass of 49 g is calculated as follows: density = 49 g / 22.4 L ≈ 2.19 g/L.
How many atoms are in 70.620 g of rhenium?
To determine the number of atoms in a given mass of an element, you need to know the molar mass of that element. The molar mass of rhenium (Re) is 186.207 g/mol. To find the number of atoms in 70.620 g of rhenium, divide the given mass by the molar mass, and then multiply by Avogadro's number (6.022 x 10^23). This gives approximately 1.590 x 10^23 atoms of rhenium.
Do you find the number of moles of an element?
Use avagadro's number - states the number of atoms in 1 mole of a substance: 6.022 x 10^23
How do you find atoms if given molar mass?
To find the number of atoms in a sample when given the molar mass, first determine the number of moles by dividing the mass of the sample by the molar mass. Then, use Avogadro's number (approximately (6.022 \times 10^{23}) entities per mole) to convert moles to atoms by multiplying the number of moles by Avogadro's number. This will give you the total number of atoms in the sample.
Work out the number of atoms per cm cubed from density?
To find the number of atoms per cm^3 from density, you first need to know the atomic mass of the material. Calculate the molar volume (cm^3/mol) using the molar mass of the material. Then convert to cm^3/atom by dividing by Avogadro's number (6.022 x 10^23). Finally, divide the material's density by the molar volume to get the number of atoms per cm^3.
How do you find the molar mass of an elemnt?
Molar mass is a term applied for molecules, not for atoms.
If given number of moles volume density and molar volume how do you find the molar mass?
Molar mass is the sum of all of its elements' average atomic mass in grams. Such as: NH4 would be calculated by adding nitrogen's aam (14.007) and hydrogen's aam multiplied by four (1.0079 x 4 = 4.0316). Therefore, ammonium's molar mass would be (14.007+4.0316) 18.039. Rounded to sig figs.
How many copper atoms are in a pure copper statue with a mass of 148kg?
To find the number of copper atoms in the statue, you need to first determine the number of moles of copper using its molar mass. Then, you can multiply the number of moles by Avogadro's number to find the number of atoms. Given that the molar mass of copper is approximately 63.55 g/mol, you can follow these steps to calculate the number of copper atoms in the statue.
How do you find density if mass and density are given?
Strictly speaking if the density is given then you don't need to find it.
How many atoms of mercury are present in 2.7 cubic centimeters of liquid mercury the density of mercury is 13.55 gcc need the answer in unit of atoms?
To find the number of atoms of mercury, you would first need to calculate the mass of mercury present in 2.7 cubic centimeters using its density. Then, convert the mass to moles using the molar mass of mercury. Finally, use Avogadro's number (6.022 x 10^23 atoms per mole) to determine the number of atoms in the given amount.
How do you find the density of oxygen at 1.00 bar and 10 degrees C?
You can use the ideal gas law to find the density of oxygen at 1.00 bar and 10 degrees C. First, calculate the molar volume of gas using the ideal gas law. Then, divide the molar mass of oxygen by the molar volume to find the density.
How do you find the molar mass of an atom?
To find the molar mass of an atom, you need to add up the atomic masses of all the atoms in its chemical formula. This can be determined from the periodic table. The unit for molar mass is grams per mole.
The molar mass of a certain gas is 49 g. What is the density of the gas in gL at STP?
To find the density of a gas at standard temperature and pressure (STP), we can use the formula: density = molar mass / molar volume. At STP, the molar volume of an ideal gas is approximately 22.4 L. Therefore, the density of the gas with a molar mass of 49 g is calculated as follows: density = 49 g / 22.4 L ≈ 2.19 g/L.
How do you find out the molar mass of a gas given density temperature and pressure?
To find the molar mass of a gas given its density, temperature, and pressure, you can use the ideal gas law equation, PV = nRT. Rearrange the formula to solve for molar mass (M) by M = (mRT)/(PV), where m is the mass of the gas present in the sample expressed in grams, R is the ideal gas constant, T is the temperature in Kelvin, P is the pressure in atmospheres, and V is the volume of the gas in liters.
How many atoms are in 70.620 g of rhenium?
To determine the number of atoms in a given mass of an element, you need to know the molar mass of that element. The molar mass of rhenium (Re) is 186.207 g/mol. To find the number of atoms in 70.620 g of rhenium, divide the given mass by the molar mass, and then multiply by Avogadro's number (6.022 x 10^23). This gives approximately 1.590 x 10^23 atoms of rhenium.
