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Suvning qattiqligi
5 litr suvli eritmaga 10,6 g soda qo`shilganda 9,04 g kalsiy va magniy karbonatlaridan iborat tuzlar aralashtmasi hosil bo`ladi. Suvning vaqtinchalik qattiqligini (mg/ekv) va karbonatlar qoldig`ini takribini (g) aniqlang?
A) 40; 4; 5,04 B) 40; 5,04; 4 C) 200; 6; 3,04 D) 120; 3,04; 6
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5 litr suvli eritmaga 10,6 g soda qo`shilganda 9,04 g kalsiy va magniy karbonatlaridan iborat tuzlar aralashtmasi hosil bo`ladi. Suvning vaqtinchalik qattiqligini (mg/ekv) va karbonatlar qoldig`ini takribini (g) aniqlang?
A) 40; 4; 5,04 B) 40; 5,04; 4 C) 200; 6; 3,04 D) 120; 3,04; 6
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Suvning qattiqligi
Suvning qattiqligini yo`qotish uchun 100 dm3 suv uchun 7,4 g Ca(OH)2 sarflandi. Suvning qattiqligini hisoblang?
A) 2 B) 1 C) 3 D) 4
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Suvning qattiqligini yo`qotish uchun 100 dm3 suv uchun 7,4 g Ca(OH)2 sarflandi. Suvning qattiqligini hisoblang?
A) 2 B) 1 C) 3 D) 4
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Suvning qattiqligi
Suvning vaqtinchalik qattiqligini 4,43 mmol/l ga teng bo`lgan 2,5 l suvning vaqtinchalik qattiqligini yo`qotish uchun necha g so`ndirilgan ohak kerak?
A) 0,82 B) 0,81 C) 0,205 D) 0,41
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Suvning vaqtinchalik qattiqligini 4,43 mmol/l ga teng bo`lgan 2,5 l suvning vaqtinchalik qattiqligini yo`qotish uchun necha g so`ndirilgan ohak kerak?
A) 0,82 B) 0,81 C) 0,205 D) 0,41
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Suvning qattiqligi
Suvning umumiy qattiqligini yo`qotish uchun ohakli, soda usuli bo`yicha 50 litr suvga 7,4 g Ca(OH)2 va 5,3 g Na2CO3 qo`shilgan. Suvning doimiy va muvaqqat va umumiy qattiqligini aniqlang?
A) 2+4=6 B) 4+2=6 C) 3+3=6 D) 1+5=6
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Suvning umumiy qattiqligini yo`qotish uchun ohakli, soda usuli bo`yicha 50 litr suvga 7,4 g Ca(OH)2 va 5,3 g Na2CO3 qo`shilgan. Suvning doimiy va muvaqqat va umumiy qattiqligini aniqlang?
A) 2+4=6 B) 4+2=6 C) 3+3=6 D) 1+5=6
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Suvning qattiqligi
100 sm3 suvda Ca(HCO3)2 ni titrlash usuli 0,08 M li 6,25 ml HCl eritmasi sarflandi. Suvning karbonatli qattiqligini (mg/ekv) aniqlang?
A) 0,5 B) 10 C) 5 D) 50
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100 sm3 suvda Ca(HCO3)2 ni titrlash usuli 0,08 M li 6,25 ml HCl eritmasi sarflandi. Suvning karbonatli qattiqligini (mg/ekv) aniqlang?
A) 0,5 B) 10 C) 5 D) 50
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