Molarityof the solution will be 907.35 m.
<h3>What is Molality?</h3>
Molaity is the no. Of moles of an compound is present in 1 kg solution .
Molality= no.0f moles / mass of the solution (in kg)
The SI unit of molality is m .
We have given here ,
Volume of benzene= 44.0ml
Density of benzene =0.877g/ mol
Volume of hexane =167 ml
Density of hexane =0.660g/ mol
Mass of benzene = 44×0.877
. →38.588 g
Mass of hexane→167×660
. → 110.220g
mass of the solution→148.808g
molar mass of the solution→78+ 86
. →164g/ mol
Molality = 148.808/ 164×1000
→907.35m
So , molality will be 907.35 m
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The answer is 2BaO + O2 -> 2BaO2
Answer:
Electrons are present around the nucleus.
Explanation:
The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.
Symbol= e⁻
Mass= 9.10938356×10⁻³¹ Kg
It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.
He constructed the glass tube and create vacuum in it. He applied electric current between electrodes. He noticed that a ray of particles coming from cathode to wards positively charged anode. This ray was cathode ray.
Properties of cathode ray:
The ray is travel in straight line.
The cathode ray is independent of composition of cathode.
When electric field is applied cathode ray is deflected towards the positively charged plate.
Hence it was consist of negatively charged particles.
While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.
Symbol of proton= P⁺
Symbol of neutron= n0
Mass of proton=1.672623×10⁻²⁷ Kg
Mass of neutron=1.674929×10⁻²⁷ Kg
All these three subatomic particles construct an atom. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
<h2>Hello!</h2>
The answer is: H2O
<h2>
Why?</h2>
The critical temperature (also known as the critical point) is the temperature above a vapor or gas can't be liquefied no matter how many pressure can be applied. Every substance has a critical temperature which varies according to the substance/compound nature.
For example, the water has a critical temperature of 373.94 °C, it means that above that temperature the vapor and liquid phases can't be distinct and there is no possible way that the vapor became liquid again no matter how many pressure is applied.
The critical temperature of the given elements/compounds are:
H2 : -240 °C
N2: -147 °C
NH3: 132.4 °C
H2O: 373.94 °C
Have a nice day!