Chimie GΓ©nΓ©rale Test

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Chimie GΓ©nΓ©rale Test

 

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αžšαž€αž‘αŸ†αž“αžΆαž€αŸ‹αž‘αŸ†αž“αž„αžšαžœαžΆαž„ solubilitΓ© s αžšαž”αžŸαŸ‹αž’αŸ†αž”αž·αž› AgCl αž“αž·αž„ αž€αŸ†αž αžΆαž”αŸ‹ [Ag+], [Cl-] αŸ”

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αžŠαžΌαž…αž˜αŸ’αžŠαŸαž…αž αŸ…αžαžΆαž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜αžšαŸαžŠαž»αž€αž˜αŸ’αž˜ αžαžΆαž˜αž“αž·αž™αž˜αž“αŸαž™αžαŸ’αž˜αžΈ?

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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αž‚αŸαž…αž„αŸ‹αž•αž›αž·αž NO2, αžαžΎαž‚αŸαžαŸ’αžšαžΌαžœαž”αž“αŸ’αžαŸ‚αž˜ ឬ αž”αž“αŸ’αžαž™ pression? N2O4 2NO2

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Donner les nombre d’oxydation pour les éléments dans les espeΜ€ces suivantes: H2SO4, KMnO4

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αž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜ estérification ៑ αž‡αžΆαž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜ athermique (αž˜αž·αž“αž‘αžΆαž€αŸ‹αž‘αž„αž“αžΉαž„αž€αŸ†αžŠαŸ…)? αž…αžΌαžšαž”αž„αŸ’αž αžΆαž‰ αžαžΎαž€αžΆαžšαžαŸ†αž‘αžΎαž„αžŸαžΈαžαž»αžŽαŸ’αž αž—αžΆαž–αž’αŸ’αžœαžΎαž²αŸ’αž™αž›αŸ†αž“αžΉαž„αž„αžΆαž€αž‘αŸ…αž‘αž·αžŸαžαžΆαž„αžŽαžΆ?Β 

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αž‚αžŽαž“αžΆ pH αž“αŸƒαžŸαžΌαž›αž»αž™αžŸαŸ’αž™αž»αž„ Ca(OH)2 10^-2 M ?

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αžαžΎαž˜αžΆαž“αž’αŸ’αžœαžΈαž€αžΎαžαž‘αžΎαž„αž€αŸ’αž“αž»αž„ solution aqueuse αž“αŸƒαž”αžΆαžŸαž˜αž½αž™αž€αŸ’αž“αž»αž„αž‘αžΉαž€?

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αž…αžΌαžšαž”αž„αŸ’αž αžΆαž‰ តើ I produit ionique de l’eau αž‘αžΆαž€αŸ‹αž‘αž„αž‘αŸ…αž“αžΉαž„αž’αŸ’αžœαžΈ?

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សរសេរ pH αž‡αžΆαž’αž“αž»αž‚αž˜αž“αŸαž“αŸƒαž€αŸ†αž αžΆαž”αŸ‹ molaire αž“αŸƒ ion OH-αž“αŸ…25oC ?

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(αž–αŸ’αž™αžΆαž™αžΆαž˜αž€αž»αŸ†αž…αŸ†αžŽαžΆαŸ†αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αžšαž”αžŸαŸ‹αžœαžΆ αž–αŸ’αžšαŸ„αŸ‡αž–αŸαž›αž”αŸ’αžšαž‘αž„αžŸαžΆαž›αžΆαž’αžΆαž…αž“αžΉαž„αž’αŸ’αžœαžΎαž²αŸ’αž™Random. Currently we cannot add complicated answers like this.)

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αž‚αžŽαž“αžΆ pH αž“αŸƒαžŸαžΌαž›αž»αž™αžŸαŸ’αž™αž»αž„ NaOH 0,01M ?

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αž”αž„αŸ’αž αžΆαž‰αž€αŸ’αž“αž»αž„αžŸαž˜αžΈαž€αžΆαžšαžαžΆαž„αž€αŸ’αžšαŸ„αž˜ αžŠαžΎαž˜αŸ’αž”αžΈαž€αž»αŸ†αž²αŸ’αž™αž”αžΆαžαŸ‹αž”αž„αŸ‹ SO2 αž…αŸ’αžšαžΎαž“ αžαžΎαž‚αŸαžαŸ’αžšαžΌαžœαž”αž“αŸ’αžαŸ‚αž˜ ឬ αž”αž“αŸ’αžαž™αžŸαž˜αŸ’αž–αžΆαž’? 2SO2 + O2 2SO3

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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(αž–αŸ’αž™αžΆαž™αžΆαž˜αž€αž»αŸ†αž…αŸ†αžŽαžΆαŸ†αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αžšαž”αžŸαŸ‹αžœαžΆ αž–αŸ’αžšαŸ„αŸ‡αž–αŸαž›αž”αŸ’αžšαž‘αž„αžŸαžΆαž›αžΆαž’αžΆαž…αž“αžΉαž„αž’αŸ’αžœαžΎαž²αŸ’αž™Random. Currently we cannot add complicated answers like this.)

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αž–αž“αŸ’αž™αž›αŸ‹αž˜αžΌαž›αž αŸαžαž»αž’αŸ’αžœαžΈαž”αžΆαž“αž‡αžΆ NH3 αž˜αžΆαž“αžŠαž›αŸ‹αž‘αŸ… 6 molΓ©cules αž“αŸ…αž‡αž»αŸ†αžœαž·αž‰ Ni++ រីឯ Γ©thylΓ¨ne diamine αž˜αžΆαž“αžαŸ‚ 3 αžŠαžΎαž˜αŸ’αž”αžΈαž”αž„αŸ’αž€αžΎαžαž”αžΆαž“αž‡αžΆ complexe αž‡αžΆαž˜αž½αž™ ion Ni++?

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αž‚αŸαž’αŸ’αžœαžΎαž–αž·αžŸαŸ„αž’αž“αŸαžŠαŸ„αž™αž™αž€ y moles I αž“αž·αž„ y moles H ? αž…αžΌαžšαž–αž“αŸ’αž™αž›αŸ‹ αžαžΎαž’αžΆαž…αž‚αŸαž‘αž‘αž½αž›αž”αžΆαž“ 2y moles IH αž¬αž‘αŸ?

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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αž…αžΌαžšαž”αŸ’αžšαŸ€αž”αž’αŸ€αž”αž€αŸ†αž›αžΆαŸ†αž„αž’αžΆαžŸαŸŠαžΈαžαž‘αžΆαŸ†αž„αž–αžΈαžšαžŠαŸ„αž™ pKa αž“αŸƒ acide Γ©thanoique αžŸαŸ’αž˜αžΎαžΎIΒ΅ 4,8 αž“αž·αž„ pKa αž“αŸƒ acide
monochloroΓ©thanoique αžŸαŸ’αž˜αžΎΒ΅ 2,5 αŸ” αžαžΎαž’αžΆαžŸαŸŠαžΈαžαžŽαžΆαžαŸ’αž›αžΆαŸ†αž„αž‡αžΆαž„ ?

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DΓ©finir ( αž€αŸ†αžŽαžαŸ‹; ) αž…αŸ†αž–αŸ„αŸ‡ CH3NH2 αž“αžΌαžœ :
– acide conjuguΓ©
– demi-Γ©quation Γ©n couple acidobasique
– Γ©quation bilan acidobasique αž‡αžΆαž˜αž½αž™αž‘αžΉαž€αŸ”

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αžŠαžΌαž…αž˜αŸ’αžŠαŸαž…αž αŸ…αžαžΆαž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜αžšαžŠαž»αž€αž˜αŸ’αž˜ αžαžΆαž˜αž“αž·αž™αž˜αž“αŸαž™αžαŸ’αž˜αžΈ?

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DΓ©finir ( αž€αŸ†αžŽαžαŸ‹; ) αž…αŸ†αž–αŸ„αŸ‡ NH3 αž“αžΌαžœ :
– acide conjuguΓ©
– demi-Γ©quation Γ©n couple acidobasique
– Γ©quation bilan acidobasique αž‡αžΆαž˜αž½αž™αž‘αžΉαž€αŸ”

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αž–αŸ’αž™αžΆαž™αžΆαž˜αž€αž»αŸ†αž…αŸ†αžŽαžΆαŸ†αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™

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αž…αžΌαžšαž–αž“αŸ’αž™αž›αŸ‹ αžαžΎαž‘αžΉαž€αžŸαž»αž‘αŸ’αž’ (eau pure) αž…αŸ†αž›αž„αž…αžšαž“αŸ’αžŠαž’αž‚αŸ’αž‚αž·αžŸαž“αžΈαžαŸ’αž›αžΆαŸ†αž„ αžαž·αž… ឬ αž˜αž·αž“αž…αŸ†αž›αž„αžŸαŸ„αŸ‡? αž–αŸ’αžšαŸ„αŸ‡αž’αŸ’αžœαžΈ?

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សរសេរ Γ©quation-bilan αž‘αžΆαž€αŸ‹αž‘αž„αž‘αŸ…αž“αžΉαž„ acide Γ©thanoΓ―que et Quelles sont les espΓ¨ces chimiques prΓ©sentes Γ  l’Γ©tat d’Γ©quilibre ?

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តើ produit de solubilitΓ© αž”αŸ’αžšαŸ‚αž”αŸ’αžšαž½αž›αž‘αŸ…αžαžΆαž˜αž’αŸ’αžœαžΈ?

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(αž–αŸ’αž™αžΆαž™αžΆαž˜αž€αž»αŸ†αž…αŸ†αžŽαžΆαŸ†αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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αž…αžΌαžšαž“αž·αž™αžΆαž™αž–αžΈαž˜αŸαž‚αž»αžŽαž“αŸƒαž€αžΆαžšαžšαž›αžΆαž™ Ξ± αžαžΎαž‚αŸαž’αžΆαž…αž“αž·αž™αžΆαž™αž™αŸ‰αžΆαž„αžŽαžΆαž–αžΈ Ξ± αž‡αžΆαž’αž“αž»αž‚αž˜αž“αŸαž“αŸƒ C ?

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αž‚αŸαž˜αžΆαž“αž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜ 3Β  Β  Β  SO2Β  Β  +Β  Β  Β 1/2 O2 SO3Β  αž‚αŸαž…αž„αŸ‹αž•αž›αž·αž SO3 αŸ” αžαžΎαž‚αŸαžαŸ’αžšαžΌαžœαž’αŸ’αžœαžΎαž“αŸ…αžŸαžΈαžαž»αžŽαŸ’αž αž—αžΆαž–αž‘αžΆαž” ឬ αžαŸ’αž–αžŸαŸ‹ αž…αžΌαžšαž–αž“αŸ’αž™αž›αŸ‹?

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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(αž–αŸ’αž™αžΆαž™αžΆαž˜αž€αž»αŸ†αž…αŸ†αžŽαžΆαŸ†αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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αž‘αŸ…αž€αŸ’αž“αž»αž„ solution 10 ml CH3C00H αž‚αŸαž”αžΆαž“αž”αž„αŸ’αž αžΌαžš solution NaOH 0,1 N αž’αžŸαŸ‹;​ 13,4 ml αž‘αžΎαž” phΓ©nol-phtalΓ©ine αžŠαžΌαžšαž–αžŽαŸŒαŸ” αžαžΎαž€αŸ†αž αžΆαž”αŸ‹ CH3COOH en normalitΓ© αžŸαŸ’αž˜αžΎαž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“ ? en molaritΓ© αžŸαŸ’αž˜αžΎαž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“ ?

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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αžŠαžΌαž…αž˜αŸ’αžŠαŸαž…αž αŸ…αžαžΆ chelation?

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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តើ mΓ©thylamine αž‡αžΆ base αžαŸ’αž›αžΆαŸ†αž„αž‡αžΆαž„ αž¬αžαŸ’αžŸαŸ„αž™αž‡αžΆαž„ ammoniac ?
pKb(CH3NH2) = 3,4 et pKb (NH3) = 4,75

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αž“αŸ…αž€αŸ’αž“αž»αž„αž‘αŸ†αž“αžΆαž€αŸ‹αž‘αŸ†αž“αž„β€‹ pH = -log[H3O+] αŸ” αž…αžΌαžšαž”αž‰αŸ’αž‡αžΆαž€αŸ‹αžαžΆ αžαžΎαž‚αŸαž”αŸ’αžšαžΎαžŸαž‰αŸ’αž‰αžΆ :-: αžŠαžΎαž˜αŸ’αž”αžΈαž’αŸ’αžœαžΈ ?

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αž…αžΌαžšαž–αž“αŸ’αž™αž›αŸ‹ αž αŸαžαž»αž’αŸ’αžœαžΈαž”αžΆαž“αž‡αžΆαžŸαžΌαž›αž»αž™αžŸαŸ’αž™αž»αž„ Γ©lectrolyte αž’αžΆαž…αž…αŸ†αž›αž„αž…αžšαž“αŸ’αžŠαž’αž‚αŸ’αž‚αž·αžŸαž“αžΈαž”αžΆαž“?

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តើ fonction acide αž˜αž½αž™αžŽαžΆαžαŸ’αž›αžΆαŸ†αž„αž‡αžΆαž„αž‚αŸ αž…αŸ†αž–αŸ„αŸ‡polyacide ?

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សរសេរ demi-Γ©quation αžαžΆαž„ couple acide /base :

a. HCOOH/ HCOO-

b. CH3NH3+/CH3NH2

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(αž“αž·αžŸαŸ’αžŸαž·αžαž‚αž”αŸ’αž”αžΈαž…αŸ†αžŽαžΆαŸ†αž•αŸ’αž“αŸ‚αž€αžŽαžΆαž˜αž½αž™αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™ αž‡αžΆαž‡αžΆαž„αž…αŸ†αžŽαžΆαŸ†αž‘αŸ…αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

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αž‘αŸ…αž€αŸ’αž“αž»αž„ solution 10 ml H2SO4 αž‚αŸαž”αžΆαž“αž”αž„αŸ’αž αžΌαžš solution NaOH 0,1 N αž’αžŸαŸ‹;​ 8,5ml αž‘αžΎαž” phΓ©nol-phtalΓ©ine αžŠαžΌαžšαž–αžŽαŸŒαŸ” αžαžΎαž€αŸ†αž αžΆαž”αŸ‹ H2SO4 en normalitΓ© αžŸαŸ’αž˜αžΎαž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“ ? en molaritΓ© αžŸαŸ’αž˜αžΎαž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“ ?

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αž…αžΌαžšαž”αž‰αŸ’αž‡αžΆαž€αŸ‹ αžαžΎαž‘αžΉαž€αž‡αžΆ acide αž‡αžΆαž”αžΆαžŸ base?

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αž€αŸ†αžŽαžαŸ‹ Nombre d’oxydation d’un Γ©lΓ©ment Γ  Γ©tat du corp simple αžŸαŸ’αž˜αžΎαž”αŸ‰αž»αž“αŸ’αž˜αžΆαž“?

48 / 60

(αž–αŸ’αž™αžΆαž™αžΆαž˜αž€αž»αŸ†αž…αŸ†αžŽαžΆαŸ†αžαžΆαž˜αž›αŸ†αžŠαžΆαž”αŸ‹αž“αŸƒαž…αž˜αŸ’αž›αžΎαž™)

49 / 60

αž²αŸ’αž™αž“αž·αž™αž˜αž“αŸαž™ loi d’action de masse?

50 / 60

αžŠαžΌαž…αž˜αŸ’αžŠαŸαž…αž αŸ…αžαžΆαž”αŸ’αžšαžαž·αž€αž˜αŸ’αž˜αž’αž»αž€αžŸαŸŠαžΈαžαž€αž˜αŸ’αž˜ αžαžΆαž˜αž“αž·αž™αž˜αž“αŸαž™αžαŸ’αž˜αžΈ?

51 / 60

Which chemical element belong to halogen group?

52 / 60

Molecular formula of nitric acid?

53 / 60

Molecular formula of phosphoric acid?

54 / 60

Glucose (C6H12O6), ribose (C5H10O5), Acetic acid (C2H4O2), and formaldehyde (CH2O) all have different molecular formulas but the same empirical formula. Write their empirical formula.?

55 / 60

Which subatomic particle has no charge?

56 / 60

Which chemical element belong to halogen group?

57 / 60

In the Periodic Table, elements are assigned with atomic number based on?

58 / 60

Which chemical element belong to halogen group?

59 / 60

Empirical formula of hydrogen peroxide?

60 / 60

Which subatomic particle has positive charge?

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