Identify which do not belong to the group?

Chemistry

2 answers:

Andru [333]2 years ago

6 0

Answer:

1.heart (bronchi connected to the trachea / bring oxygen to lungs)

2.epiglottis

3.plasma

4.coronary (not sure bout this)

5.alveoli

nevsk [136]2 years ago

5 0

Answer:

bronchi

epiglottis

plasma

Mittal

alveoli

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An ideal gas contained in a piston which is compressed. The gas is insulated so that no heat flows into or out of it. 1) What ha

Goryan [66]

Answer:Temperature increases

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We know ideal gas equation to be PV=nRT where

P=pressure

V=Volume

T=Temperature

R=Real gas constant

n=Number of moles

since the gas is insulated such that no heat goes into or out of the system .

When we compress the ideal gas using a piston, Thermodynamically it means that work is done on the system by the surroundings.

Now as the ideal gas is been compressed so the volume of the gas would decrease and slowly a time will reach when no more gas can be compressed that is there cannot be any further decrease in volume of the gas.

From the equation PV=nRT

Once there is no further compression is possible hence volume becomes constant so pressure of the ideal gas becomes directly proportional to the temperature as n and R are constants. Also as the pressure and volume are inversely related so an decrease in volume would lead to an increase in pressure.

As the ideal gas is compressed so the pressure of the gas would increase since the gas molecules have smaller volume available after compression hence the gas molecules would quite frequently have collisions with other gas molecules or piston and this collision would lead to increase in speed of the gas molecules and so the pressure would increase .

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Moles of Zn(NO3)2 in 131.50g of this substance.

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number of moles= mass / molecular mass
mass=131.50g
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The scheme is shown below, the steps involved are as follow,

Step one: Reduction:
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Step three: Reduction:
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Step four: Oxidation:
The hydroxyl group (alcohol) is oxidized to carbonyl (ketonic group) using oxidizing agent Chromic acid (H₂CrO₄).