I believe that it is A. Ethnocentrism
Answer:- There are particles in the container present at 23 degree C and 101.3 pKa.
Solution:- The given volume of the container is 4.0 L at 23 degree C and 101.3 kPa pressure.
We would calculate the moles using ideal gas law equation(PV = nRT) and then the moles are converted to particles on multiply the moles by Avogadro number.
Let's convert degree C to kelvin and pKa to atm.
T = 23 + 273 = 296 K
P = 101.3 pKa = 1 atm
R =
V = 4.0 L
n = ?
Let's plug in the values in the equation:
1(4.0) = n(0.0821)(296)
4.0 = n(24.3)
n = 0.165 mol
Let's multiply the moles by Avogadro number to get the number of particles:
= particles
So, from above calculations there would be particles in the container.
Empirical formula is the simplest ratio of components making up a compound.
The percentage composition of each element has been given
therefore the mass present of each element in 100 g of compound is
B N H
mass 40.28 g 52.20 g 7.53 g
number of moles
40.28 g / 11 g/mol 52.20 g / 14 g/mol 7.53 g / 1 g/mol
= 3.662 mol = 3.729 mol = 7.53 mol
divide the number of moles by the least number of moles, that is 3.662
3.662 / 3.662 3.729 / 3.662 7.53 / 3.662
= 1.000 = 1.018 = 2.056
the ratio of the elements after rounding off to the nearest whole number is
B : N : H = 1 : 1 : 2
therefore empirical formula for the compound is B₁N₁H₂
that can be written as BNH₂
The location of an electron can't be determined exactly, because of it's high speed, by the time we define it in a position, it changes it position. The location is determined by probability, and also uncertainty theory
Francium oxide Fr₂O
Francium, as well as sodium, is in 1A group. Its valency is equal to unit.