2.5x10^22 atoms
Since silicon has a density of 2.33 grams/cm3 and an atomic weight of 28.0855 g/mol, 1 cm2 of silicon would contain approximately 9.74 x 10^22 atoms. This calculation assumes the silicon is in a crystalline form with close packing of atoms.
Silicon dioxide has a density of 2.63 g/cm3.
The density of iron, Fe, at room temperature is 7.874 g/cm3. So 1cm3 of iron has a mass of 7.874g. 1 mole iron = 55.845g Fe = 6.022 x 1023 atoms Fe. 7.874g Fe x 6.022 x 1023 atoms Fe/55.845g Fe = 8.491 x 1022 atoms Fe
The density of copper is about 8.96 grams per cubic centimeter. Therefore, the density of a material with a mass of 1800 grams and a volume of 200 cm3 would be approximately 9 g/cm3, given that the material is copper.
To determine the number of atoms in 560 cm3 of ammonia at STP (Standard Temperature and Pressure), we first need to calculate the number of moles of ammonia present. The molar volume of a gas at STP is 22.4 L/mol, which is equivalent to 22,400 cm3/mol. Therefore, 560 cm3 is equal to 0.025 moles of ammonia. Next, we use Avogadro's number, 6.022 x 10^23 atoms/mol, to find that there are approximately 1.51 x 10^22 ammonia molecules in 560 cm3 at STP.
Number of atoms in a unit cell:4 atomscompletely inside cellEach of the 8 atoms on corners are shared among cells count as 1 atom inside cellEach of the 6 atoms on the faces are shared among 2cells  count as 3 atomsinside cellTotal number inside the cell = 4 + 1 + 3 = 8Cell volume:(.543 nm)3 = 1.6 x 10-22 cm3Density of silicon atoms= (8 atoms) / (cell volume) = 5 x 1022 atoms/cm3
Since silicon has a density of 2.33 grams/cm3 and an atomic weight of 28.0855 g/mol, 1 cm2 of silicon would contain approximately 9.74 x 10^22 atoms. This calculation assumes the silicon is in a crystalline form with close packing of atoms.
2g/cm3
Depends on the material
The solid material has a density of 5 g/cm3
Density is calculated as mass divided by volume. In this case, the mass is 820g and the volume is 350 cm3. Density = 820g / 350 cm3 ≈ 2.34 g/cm3.
Start by writing the formula that you probably know for density D=m/V Now plug in the data that you have: 2.336 g/cm3 = m/350 cm3 so, m = 350 x 2.336 = 817.6 g
Silicon dioxide has a density of 2.63 g/cm3.
The density of iron, Fe, at room temperature is 7.874 g/cm3. So 1cm3 of iron has a mass of 7.874g. 1 mole iron = 55.845g Fe = 6.022 x 1023 atoms Fe. 7.874g Fe x 6.022 x 1023 atoms Fe/55.845g Fe = 8.491 x 1022 atoms Fe
The density of copper is about 8.96 grams per cubic centimeter. Therefore, the density of a material with a mass of 1800 grams and a volume of 200 cm3 would be approximately 9 g/cm3, given that the material is copper.
If you think to a material with the density of 0,92 g/cm3, this material float on water.
10 000 cm3