The amount of heat absorbed or evolved during the formation of 1 mole of a substance is called heat of formation.

For example-:

 

C + O₂  CO₂  + Heat

 

In this reaction, heat will be evolved. Hence, heat of formation of CO₂ is -393.5, further as the heat is evolved the sign is negative.

 

Plz. rate if satisfied........

Is pradeep a good book for this purpose????

 

OK...Arihant and P bahadur are gud but are they gud in dealing with conceptuals problems.......and not only numericals.........

coz" Sin and cos has a range of (1,-1)

Thus Minimum:: -2

mAximum:: 2

hope this will help u,

 

Ix+2I+x    >     1

   x+3

 

 

Ix+2I + x          >    1

 x+3     x+3

 

Taking x the other and then squaring may help you......

Friends,

If a certain mass of fuel can propell a rocket in outer space then cant we use a rocket engine in order to accelarate a bicycle.

i've checked the necessay requirements and found out that I only require gasoline to propell it in forward direction. The topic wheere i am stuck is that ::

"Is there any realtion between Force applied and Energy produced?"

Is there any relation between the physical quantities: FORCE and ENERGY????

it will be done like this....

 

molarity = (no. of moles)/(Volume of Solution in Litrs)

 

0.074 = (No.of Moles)/0.5L

No. of Moles = 0.074*0.5

No. of Moles = 0.037

 

 (Given mass)/(Mol. Mass) = 0.037

 

 Given Mass = 0.037*244

 

 Given Mass = 9.028/2      ('coz, we want Cl^- not Cl₂)

Respected Sir/ma'am,

my classes of +1 have started recently and I am having difficulty with mathematics. Although, it is my favourite subject.

For the time bieng i wanted a list of Logarithmic properties.

Thank You sir