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ICSE Class 10 Answered

answer it plz
Asked by lovemaan5500 | 03 Dec, 2017, 06:41: AM
answered-by-expert Expert Answer
T h e space b a l a n c e space e q u a t i o n space f o r space r e d u c t i o n space o f space C u space O space i s colon space space space space space space space space space space space space space space space space space space space space space space space space space space space space space C u O space plus space H subscript 2 space rightwards arrow with increment on top space C u space space space space space space space plus space H subscript 2 O space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 3.18 g m space space space space ? space space space space space space space space space 2.54 g m space space space 0.72 g m space m o l e c u l a r space m a s s space equals space space space 79.55 space space space space space 2 space space space space space space space space space space space 63.54 space space space space space space space space space space 18 i n space a b o v e space r e a c t i o n space i t space i m p l i e s space t h a t comma 18 space g m s space o f space space H subscript 2 O space n e e d s space 2 space g m space o f space H subscript 2 s o comma space 1 space g m space space H subscript 2 O space n e e d s space fraction numerator 2 over denominator 18 space end fraction g space o f space H subscript 2 S o comma space 0.72 space g m s space o f space space H subscript 2 O space n e e d s space 2 over 18 cross times 0.72 space equals space 0.08 space g space o f space H subscript 2 B u t space i n space y o u r space q u e s t i o n space t h e y space a s k e d space t h a t space c a l c u l a t e space t h e space m a s s space o f space h y d r o g e n space w h i c h space c o m b i n e s space w i t h space 1 space m o l e space o f space o x y g e n space a t o m comma I n space t h i s space c a s e comma O x y g e n space a t o m space w i l l space c o m b i n e space w i t h space t w o space a t o m s space o f space H y d r o g e n therefore space m a s s space o f space h y d r o g e n space equals space 1 space space therefore m a s s space o f space 2 space a t o m s space o f space h y d r o g e n space w i l l space b e space 2 space g m t h e r e f o r e comma space 2 space g m space o f space h y d r o g e n space w i l l space c o m b i n e s space w i t h space 1 space m o l e space o f space o x y g e n space a t o m comma
Answered by Ramandeep | 05 Dec, 2017, 11:27: AM

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ICSE 10 - Chemistry
What will be the mass. ??
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Asked by jrvedant208 | 05 Feb, 2024, 10:37: PM
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ICSE 10 - Chemistry
How to calculate Emphirical formula and Molecular formula? thanks.
Asked by rashikulkarni28 | 10 Jul, 2022, 10:13: PM
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In Chemistry, in a given reaction , how to recognize which reaction it is  i.e oxidation,reduction or redox reaction?
Asked by rashikulkarni28 | 25 Jun, 2022, 10:24: PM
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ICSE 10 - Chemistry
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Asked by rdk_kulkarni | 09 Mar, 2021, 08:55: AM
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ICSE 10 - Chemistry
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Asked by sdebasish44 | 26 Dec, 2020, 09:45: PM
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ICSE 10 - Chemistry
Find the volume of oxygen at STP required for the complete combustion of 2 litres of carbon monoxide at S.T.P.  
Asked by palshivom72 | 14 Jul, 2020, 07:56: PM
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why mole concept important
Asked by jhabijay01 | 27 May, 2020, 12:20: PM
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ICSE 10 - Chemistry
A mixture of hydrogen and chlorine occupying 36 cm3 was exploded. On shaking it with water, 4cm3 of hydrogen was left behind. Find the composition of the mixture.
Asked by aashimegh | 04 Sep, 2019, 08:53: AM
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ICSE 10 - Chemistry
What volume of oxygen at STP is required to affect the combustion of 11 litres of ethylene [C2H4] at 273o C and 380 mm of Hg pressure?                         C2H4+3O22CO2 + 2H2O
Asked by aashimegh | 04 Sep, 2019, 08:37: AM
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ICSE 10 - Chemistry
Calculate the number of molecules in 1 kg of Calcium Chloride.
Asked by aashimegh | 28 Aug, 2019, 05:25: PM
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