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Introduction to Biomolecules

15. What is m...

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15. What is mass and difference between mass and weight? If atoms does not exist in free nature so can carbon an exist Iike C+O2=CO2 And C+1/2 O2=CO

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Q. If the weight ratio of

C

O_{2}

present is 1:2 and both of reactants completely consume and form

C O

C O_{2}

and we will obtain a gaseous mixture of

C O

C O_{2}

. What would be the weight ratio of

C O

C O_{2}

Q. If the weight ratio of

C

O_{2}

present is 1:2 and both of reactants completely consume and form

C O

C O_{2}

. We will obtain a gaseous mixture of

C O

C O_{2}

N_{2}

C O_{2}

gases remain after 0.72 gm of carbon is treated with one litre of air at

27^{0} C

and 4.92 atm pressure. Assume air composition

O_{2}

N_{2}

C O_{2}

= 1% (by volume). The heat evolved (in Kcal) under constant pressure is:
Given :

C + O_{2} \to C O_{2}, Δ H = - 100 K c a l / m o l

C + \frac{1}{2} O_{2} \to C O, Δ H = - 25 K c a l / m o l

Q. What is the relation between an

N e

atom (mass number of

20

O^{2 -}

ion (mass number of

16

Q. If atoms are not able to exist independently, what about argon (Ar), helium (He) ; it made of 1 atom only right? So therefore how thats able to exist?
And hydrogen (H2) , is made of 2 atoms right? So why hydrogen is not able to exist independently?

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