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Answer:
104.352°C
Explanation:
Data Given:
Boiling point of water = 100.0°C
Kb (boiling point constant = 0.512°C/m
Concentration of the Mg₃(PO₄)₂ = 8.5 m
Solution:
Formula Used to find out boiling point
ΔTb = m.Kb . . . . . . (1)
where
ΔTb = boiling point of solution - boiling point of water
So,
we can write equation 1 as under
ΔTb = Tb (Solution) -Tb (water)
As we have to find out boiling point so rearrange the above equation
Tb (Solution) = m.Kb + Tb (water) . . . . . . . (2)
Put values in Equation 2
Tb (Solution) = (8.5 m x 0.512°C/m ) + 100.0°C
Tb (Solution) = 4.352 + 100.0°C
Tb (Solution) = 104.352°C
so the boiling point of Mg₃(PO₄)₂ 8.5 m solution = 104.352°C
Answer:
atomic orbital
Explanation:
Atoms are made of three sub-atomic particles, electron, proton and neutron.
Protons and neutrons are present in the core of the atom in a very small zone called nucleus. Nucleus is positively charged.
Electrons are present around the nucleus. Electrons present outside the nucleus are also termed as electron cloud. Region outside the nucleus where probability of finding an electron is maximum is termed as atomic orbital. Four basic types of orbitals are present around the nucleus which are
s-orbital
p-orbital
d-orbital
f-orbital
Electrons present in same orbitals have same energy. Therefore, term is atomic orbital.
I don't know what the options were but a material that is very likely going to be challenging to recognize under a microscope as a mixture is a homogeneous mixture. A homogenous mixture is uniform and thus hard to recognize as a mixture. An example is water!
Answer:
Answer has been given below.
Explanation:
- According to Beer's law-
- represents molar absorptivity of a solution, c represents molarity of solution and l represents cell thickness.
- Measurement of absorption is done by taking solutions of a particular solute with different concentrations. A particular solute has a particular maximum absorption wavelength. So absorption experiment is done by keeping this maximum absorption wavelength constant.
- remains constant for a particular solute and a particular absorption wavelength.
- During absorption experiment, same cuvette with a particular cell thickness is used. So "l" remains constant during experiment.
- So the variables are "c" and "A" as absorption depends on concentration of solution.
- Therefore Beer's law can be considered as y=mx relation, where y is equivalent to "A" , x is equivalent to "c" and m is equivalent to "".
- Now, y=mx represents a straight line passing through origin. Therefore y-intercept of any Beer's law plot equal to zero.