<span>She must use Avogadro's Number. Avogadro's number is the number of molecules in a mole of a substance, so if you have 12.4 moles of something, then you have 12.4 times Avogadro's number of molecules.</span>
A. Reproduction
Birth is producing children just as they were which is REproduction
Answer:
1.47 atm
Explanation:
From the question.
Applying
PV = nRT................. Equation 1
Where P = pressure, V = volume, T = temperature, n = number of moles, R = Molar gas constant
Makr P the subject of the equation
P = nRT/V................ Euqation 2
Given: V = 50.0 L, n = 3.00 mol, T = 25°C = (273+25) = 298K,
Constant: R = 0.082 atm.L.K⁻¹mol⁻¹
Substitute these values into equation 2
P = (3×298×0.082)/(50)
P = 73.308/50
P = 1.46616
P ≈ 1.47 atm
Answer:
The value of Ka ![= 1.1*10^{-2}](https://tex.z-dn.net/?f=%3D%201.1%2A10%5E%7B-2%7D)
It is a weak acid
Explanation:
From the question we are told that
The concentration of ![[HClO_2]=0.24M](https://tex.z-dn.net/?f=%5BHClO_2%5D%3D0.24M)
The concentration of ![[H^+]=0.051M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D0.051M)
The concentration of ![[ClO_2^-]=0.051M](https://tex.z-dn.net/?f=%5BClO_2%5E-%5D%3D0.051M)
Generally the equation for the ionic dissociation of
is
![HClO_2_(aq) -------> H^{+}_{(aq)} + ClO_2^{-}_{(aq)}](https://tex.z-dn.net/?f=HClO_2_%28aq%29%20-------%3E%20H%5E%7B%2B%7D_%7B%28aq%29%7D%20%2B%20ClO_2%5E%7B-%7D_%7B%28aq%29%7D)
The equilibrium constant is mathematically represented as
![Ka = \frac{concentration \ of \ product }{concentration \ of \ reactant }](https://tex.z-dn.net/?f=Ka%20%3D%20%5Cfrac%7Bconcentration%20%20%5C%20of%20%20%5C%20product%20%20%7D%7Bconcentration%20%5C%20of%20%5C%20%20reactant%20%7D)
![= \frac{[H^+][ClO_2^-]}{[HClO_2]}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%5BH%5E%2B%5D%5BClO_2%5E-%5D%7D%7B%5BHClO_2%5D%7D)
Substituting values since all value of concentration are at equilibrium
![Ka = \frac{0.051 * 0.051}{0.24}](https://tex.z-dn.net/?f=Ka%20%3D%20%5Cfrac%7B0.051%20%2A%200.051%7D%7B0.24%7D)
![= 1.1*10^{-2}](https://tex.z-dn.net/?f=%3D%201.1%2A10%5E%7B-2%7D)
Since the value of is less than 1 it show that in water it dose not completely
disassociated so it an acid that is weak
Correct Answer: CH2CCI2 and CH2CH2.
Reason:
Structure of compound depends on the hybridization of central atom. In both of the above molecules (i.e. CH2CCL2 and CH2CH2). Central atom i.e. carbon is
sp^2 hybridized. Thus 3 hybridized orbitals of 'C' is involved in sigma bonding. Further, these orbitals are placed spatially at an angle of
![120^{0}](https://tex.z-dn.net/?f=%20120%5E%7B0%7D%20)
. The un-hybridized 2pz orbital of 'C' is involved in pi-bonding. Due to this, both of the above molecules possess a
triangular planner geometry.