Question

Question In Attachment ⤴️


[Questions are based on:-
Class - 9th
History - Ch 1 The French Revolution
Civics - Ch 2 Constitutional Design
Geography - Ch 1 India : Size and Location & Ch 2 Physical Features of India
Economics - Ch 2 People as resource]





ᴅᴏɴ'ᴛ sᴘᴀᴍ✕​

Answer 1

Explanation:

Answer31:- (D) Assertion is wrong statement but

reason is correct statement.

Answer32:- (C) Assertion is correct statement but reason is wrong statement.

Answer33:-(C) Assertion is correct statement but reason is wrong statement.

Answer34:-(C) Assertion is correct statement but reason is wrong statement.

Answer 35:-(B) Assertion and reason both are correct statement but reason is not the correct explaination of assertion .

Answer 2

Answer:

These Brains deez days

Yo Mihika

How're u?

aur new class me promote hui hogi

konsi class me ?

im in 10th now

aur kya?

kuch nhi

KUCH BHI TO NHI

ok bye

The equation for the above reaction is as follows:

(graphite is an allotrope of carbon--C)

      C         +       O2 ------->  CO2

        (s)                  (g)                (g)

Therefore 1 mole of graphite requires 1 Mole of O2 to give 1 mole of CO2

Calculate the moles of graphite:

molar mass of C = 12

mass = 2400 g

moles = mass/molar mass

          = 2400/12

          =200 moles

if 1 mole of C requires 1 mole of O2

then 200 moles requires  = 1 x 200 / 1

                                        = 200 moles

 

           Find mass of oxygen: (molar mass of O2= 32, moles=200)

mass = moles x molar mass

        = 200 x 32

        = 6400g

         = 6.4kg of oxygen

Find the volume of oxygen:

Ideal gas law..... states that 1 mole of an ideal gas occupies 22.4 litres.

                     

                    therefore 200 moles of O2 occupies= (22.4 x 200) liters

 

                                                                              =4480 liters

                volume of oxygen = 4480 liters

Explanation: