Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

1.Find the ratio of the number of atoms present in 16g of O2 and 32g of O3. 2.Find the charge of 48g of Mg2+ ions in coulombs.
Asked by pb_ckt | 16 May, 2019, 02:40: PM
answered-by-expert Expert Answer
1. Given:
 
Mass of O2 = 16 gm
 
Mass of O3 = 32 gm
 
Molar mass of  O2 = 32 gm
 
Molar mass of  O3 = 48 gm
 
No. of moles of  O2 
 equals space 16 over 32

equals space fraction numerator 1 space over denominator 2 end fraction space mole space of space straight O subscript 2
 
No. of moles of  O3
 
equals 32 over 48

equals 2 over 3 space mole space of space straight O subscript 3
 
1 mole of any substance contains 6.022 × 1023 atoms
 
1/2  mole of O2 will contains =1 half cross times space 6.022 space cross times space 10 to the power of 23 space cross times 2
 
2/3moles of O3 will conatain = 2 over 3 cross times 6.022 cross times 10 to the power of 23 space cross times 3 space space atoms space
 
Ratio of the number of atoms present 
 
 
equals space fraction numerator 1 half cross times space 6.022 space cross times space 10 to the power of 23 space cross times 2 over denominator begin display style 2 over 3 cross times space 6.022 space cross times space 10 to the power of 23 space cross times 3 end style end fraction

equals space 1 half
 
The ratio of number of atoms is 1:2
Answered by Varsha | 16 May, 2019, 03:36: PM
CBSE 11-science - Chemistry
Asked by VarunTYAGi9013 | 21 Oct, 2023, 07:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by pujakum60022 | 11 Jun, 2023, 08:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by vibhutimandal70 | 26 Jun, 2022, 10:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by sd8022567 | 10 Jun, 2022, 11:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Bhathika1434 | 13 Oct, 2020, 07:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by tiparsemahesh | 04 Oct, 2020, 07:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by nirajrane1234 | 09 Sep, 2020, 09:53: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Ssajal020 | 25 Aug, 2020, 06:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by kirnainsa72 | 15 Aug, 2020, 05:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by ss8553098 | 26 Jul, 2020, 11:58: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×