Grade 12th passPhysical Chemistry
What is no. Of moles of O-atom in 126 amu of HNO3?.....
3 Answers
Siddhant mudholkar
Molecular mass of HNO3=63NO. OF MOLES OF HNO3 IN 126u=126÷63=2molesNo.of moles of oxygen in 1 mole of HNO3=3Therefore answer is 6 moles of oxygen
Sheetal kumari
Thanks for askingTo find the number of moles we divide given mass of a substance by its atomic mass.Thus we have given 126 amu of HNO3 we can find its number of moles by dividing 126 by 63 (which is the moleculr mass of HNO3)=2 molesThus if 1 mole of HNO3 contains 3 moles of oxygen then its 2 moles contains 6 moles of oxygenPlease kindly approved me
Lavish Sachdeva
126 amu HNO3 (Molecular mass is 63 amu)
Means there Are 2molecules of it
Hence 6 molecules of O=6/NA moles of O.
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago