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在無(wú)土栽培中需用濃度為0.5mol/LNH4Cl.0.16mol/LKCl.0.24mol/LK2SO4的培養(yǎng)液.若用KCl.NH4Cl和(NH4)2SO4三種物質(zhì)來(lái)配制1.00L上述營(yíng)養(yǎng)液.所需三種鹽的物質(zhì)的量正確的是 A 0.4mol.0.5mol.0.12mol B 0.66mol.0.5mol.0.24mol C 0.64mol.0.5mol.0.24mol D 0.64mol.0.02mol.0.24mol 查看更多

 

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在無(wú)土栽培中需用濃度為0.5mol/LNH4Cl、0.16mol/LKCl、0.24mol/LK2SO4的培養(yǎng)液,若用KCl、NH4Cl和(NH42SO4三種物質(zhì)來(lái)配制1.00L上述營(yíng)養(yǎng)液,所需三種鹽的物質(zhì)的量正確的是 

A.0.4mol、0.5mol、0.12mol       B.0.66mol、0.5mol、0.24mol

C.0.64mol、0.5mol、0.24mol      D.0.64mol、0.02mol、0.24mol

 

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在無(wú)土栽培中需用濃度為0.5mol/LNH4Cl、0.16mol/LKCl、0.24mol/LK2SO4的培養(yǎng)液,若用KCl、NH4Cl和(NH42SO4三種物質(zhì)來(lái)配制1.00L上述營(yíng)養(yǎng)液,所需三種鹽的物質(zhì)的量正確的是 
A.0.4mol、0.5mol、0.12molB.0.66mol、0.5mol、0.24mol
C.0.64mol、0.5mol、0.24molD.0.64mol、0.02mol、0.24mol

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在無(wú)土栽培中需用濃度為0.5mol/LNH4Cl、0.16mol/LKCl、0.24mol/LK2SO4的培養(yǎng)液,若用KCl、NH4Cl和(NH42SO4三種物質(zhì)來(lái)配制1.00L上述營(yíng)養(yǎng)液,所需三種鹽的物質(zhì)的量正確的是 

A.0.4mol、0.5mol、0.12mol       B.0.66mol、0.5mol、0.24mol

C.0.64mol、0.5mol、0.24mol      D.0.64mol、0.02mol、0.24mol

 

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在無(wú)土栽培中需用濃度為0.5mol/LNH4Cl、0.16mol/LKCl、0.24mol/LK2SO4的培養(yǎng)液,若用KCl、NH4Cl和(NH42SO4三種物質(zhì)來(lái)配制1.00L上述營(yíng)養(yǎng)液,所需三種鹽的物質(zhì)的量正確的是 

A.0.4mol、0.5mol、0.12molB.0.66mol、0.5mol、0.24mol
C.0.64mol、0.5mol、0.24molD.0.64mol、0.02mol、0.24mol

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(1)如果ag某氣體中含有的分子數(shù)為b,則cg該氣體在標(biāo)準(zhǔn)狀況下占有的體積應(yīng)表示為(式中NA為阿伏加德羅常數(shù))_______________

(2)在標(biāo)準(zhǔn)狀況下,H2和O2的混合氣體共8.96L,質(zhì)量為8.3g。則H2的質(zhì)量為            ,O2的體積分?jǐn)?shù)為_(kāi)_______。
(3) 在無(wú)土栽培中需用濃度為0.5mol/LNH4Cl、0.16mol/LKCl、0.24mol/LK2SO4的培養(yǎng)液,若用KCl、NH4Cl和(NH42SO4三種物質(zhì)來(lái)配制1.00L上述營(yíng)養(yǎng)液,所需三種鹽的物質(zhì)的量分別是                     

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