1-nazorat testi (@kimyorb)

suvonov bobirbek begzodovich telegram kanalimiz // @kimyorb kimyo 1 – variant tekshiruvchi: suvonov bobirbek begzodovich (b.b.s) +998 – 93 – 337 – 37 – 35 1. 120 g suvda 80 g so3 eritildi. olingan eritmadagi kislotaning massa ulushini (%) toping. m(h2so4= 98) a) 40 b) 49 c) 50 d) 98 2. feso4 alcl3 suv tuzlar suvda to‘la dissotsiatsialanganda eritmada 5 mol kation va 9 mol anion bo‘lsa, kationlarni to‘la cho‘ktirish uchun necha mol koh sarf bo‘ladi? a) 12 b) 10 c) 15 d) 8 3. 0,5 mol alkenni to‘la yonishidan hosil bo‘lgan co2 gazi, 400 g 20% li naoh eritmasini neytrallashga yetarli bo‘lsa, alken molekulasidagi atomlar sonini toping. a) 12 b) 9 c) 6 d) 15 4. 1. 2fe + …

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