What is the unit in this formula? The weight of aluminum plate (kg) = 0.00171 × thickness × width × length

What is the unit in this formula? The weight of aluminum plate (kg) = 0.00171 × thickness × width × length

If you look at the formula, weight = 0.00171 * the third power of length measurement unit, that is volume, which is equivalent to M = ρ * v. the weight of aluminum plate per meter is calculated as follows: kg = 0.00171 * the unit of thickness * width * length is meter, the unit of thickness and width is millimeter. The theoretical density of aluminum at room temperature is 2698.72/m3

The abbreviation of the United Nations is (); the abbreviation of the people's Republic of China is (); the abbreviation of the United Nations Educational, scientific and cultural organization is ()

UN
PRC
UNIESCO

The abbreviation of "the United Nations" is______ The abbreviation of "the people's Republic of China" is______ ,

The people's Republic of China
United Nations: United Nations

How to calculate the molar mass when the density of a certain gas under standard condition is known

VM = 22.4l, it means that the volume of 1mol gas is 22.4l, m molar mass means the mass of 1mol substance, P means the mass of 1l gas under the standard condition, so VM * P means the mass of 22.4l gas, that is, the mass of 1mol gas is the molar mass of the gas, so m = VM * P

A gas is one of the main gases causing greenhouse effect. The mass of 0.01mol is 0.44g. The molar mass of the gas is______ Under standard conditions, the density of the gas is______ ．

The molar mass of the gas M = Mn = 0.44g0.01mol = 44g / mol, the gas density ρ = MVM = 44g / mol22.4l/mol = 1.96g/l under the standard condition

Under the standard condition, if the density of a gas is 2.15g/l, what is its molar mass?
What is the density of the gas relative to oxygen at the same temperature and pressure? If gas a is a simple substance, the atomic number of a and oxygen with the same mass (fill in "equal" or "unequal")

The molar mass of the gas is 22.4 * 2.15 = 48, and the relative density of the gas to oxygen is 1.5. The relative density of the gas to oxygen is the density of the gas divided by the density of oxygen. If the gas is a simple substance, it is ozone, and the same mass is equal to the number of atoms contained in a and oxygen

”At the same temperature and pressure, the ratio of the mass of any gas of the same volume is equal to the ratio of its molar mass or density

There is a formula, PV = NRT, R is a fixed value,
P pressure, V volume, n mass, t temperature
N = m / m, PV = m1rt / M1, PV = m2rt / m2 under the same TPV,
M1 = pvm1 / RT, M2 = pvm2 / RT, so M1: M2 = M1: m2
As for density, we can change the formula to P (M / density) = (M / M) RT, which is equivalent to P / density = RT / m
So density 1 = PM1 / RT, density 2 = PM2 / RT, so density 1: density 2 = M1: M2 = M1: m2
I think it's detailed enough

01 mol, the mass of a gas is 0.28 g, what is the molar mass of the gas? Under the standard condition, what is the density?

0.28/0.01=28
28/22.4=1.25g/L

How to deduce the density w / m when C = 1000

The mass of the substance can be w times the total mass

Chemical C = 1000 · P (density) w (mass fraction) / M
How does this formula come from To be more specific,

According to the calculation formula of mass concentration of substance: C = n / v = (M / M) / v = m / (m * V) = [M (solution) * ω] / (m * V) = 1000 ρ * V * ω / (m * V) = 1000 ρ * ω / m, because the unit of density is: g / cm3, and the unit of volume V is liter (L), so cm3 should be converted into L, so it should be multiplied by 1000