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Suvning qattiqligi
0,005 M kalsiy xlorid saqlagan suvning qattiqligini (mg/ekv) aniqlang?
A) 10 B) 15 C) 7 D) 8
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0,005 M kalsiy xlorid saqlagan suvning qattiqligini (mg/ekv) aniqlang?
A) 10 B) 15 C) 7 D) 8
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Suvning qattiqligi
Agar 1 m3 suvning qattiqligi 4 mg/ekv bo`lsa, unda necha g CaSO4 bo`ladi?
A) 272 B) 136 C) 68 D) 544
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Agar 1 m3 suvning qattiqligi 4 mg/ekv bo`lsa, unda necha g CaSO4 bo`ladi?
A) 272 B) 136 C) 68 D) 544
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Suvning qattiqligi
5 litr suvda 2,43 mg Ca(HCO3)2 va 3,65 mg Mg(HCO3)2 bo`lsa, suvning vaqtinchalik qattiqligini (mg/ekv) aniqlang?
A) 0,16 B) 1,2 C) 0,23 D) 0,016
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5 litr suvda 2,43 mg Ca(HCO3)2 va 3,65 mg Mg(HCO3)2 bo`lsa, suvning vaqtinchalik qattiqligini (mg/ekv) aniqlang?
A) 0,16 B) 1,2 C) 0,23 D) 0,016
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Suvning qattiqligi
Agar 0,15 litr suvda 16,2 mg kalsiy gidrokarbonat, 2,92 mg magniy gidrokarbonat, 11,1 mg kalsiy xlorid va 9,5 mg magniy xlorid mavjud bo`lsa, suvning umumiy qattiqligini (mg/ekv) aniqlang?
A) 10,76 B) 2,56 C) 3 D) 4,267
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Agar 0,15 litr suvda 16,2 mg kalsiy gidrokarbonat, 2,92 mg magniy gidrokarbonat, 11,1 mg kalsiy xlorid va 9,5 mg magniy xlorid mavjud bo`lsa, suvning umumiy qattiqligini (mg/ekv) aniqlang?
A) 10,76 B) 2,56 C) 3 D) 4,267
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Suvning qattiqligi
5 litr suvda 1,216 mg Ca(HCO3)2 va Mg(HCO3)2 tuzlari mavjud. Bu suvning umumiy qattiqligi 0,0032 (mg/ekv) bo`lsa, suvdagi Ca(HCO3)2 tuzining massasini aniqlang?
A) 0,243 mg B) 0,425 mg C) 0,486 mg D) 0,73 mg
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5 litr suvda 1,216 mg Ca(HCO3)2 va Mg(HCO3)2 tuzlari mavjud. Bu suvning umumiy qattiqligi 0,0032 (mg/ekv) bo`lsa, suvdagi Ca(HCO3)2 tuzining massasini aniqlang?
A) 0,243 mg B) 0,425 mg C) 0,486 mg D) 0,73 mg
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Suvning qattiqligi
Suvning karbonatli qattiqligi 20 ga teng. 30 litr shunday suv qaynatilganda 28,4 g kalsiy karbonat va magniy karbonatdan iborat qoldiqlar aralashmasi hosil bo`ldi. Qoldiq tarkibini moslab aniqlang?
A) 10; 18,4 B) 24,4; 4 C) 20; 8,4 D) 11,6; 16,8
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Suvning karbonatli qattiqligi 20 ga teng. 30 litr shunday suv qaynatilganda 28,4 g kalsiy karbonat va magniy karbonatdan iborat qoldiqlar aralashmasi hosil bo`ldi. Qoldiq tarkibini moslab aniqlang?
A) 10; 18,4 B) 24,4; 4 C) 20; 8,4 D) 11,6; 16,8
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Suvning qattiqligi
2 l suvning har litrida 50 g Ca(HCO3)2 va 35 g Mg(HCO3)2 bo`lsa, uzoq vaqt qaynatish natijasida choynak tubida qanday massadagi (g) quyqa hosil bo`ladi?
A) 40,3 B) 102 C) 61,7 D) 113,5
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2 l suvning har litrida 50 g Ca(HCO3)2 va 35 g Mg(HCO3)2 bo`lsa, uzoq vaqt qaynatish natijasida choynak tubida qanday massadagi (g) quyqa hosil bo`ladi?
A) 40,3 B) 102 C) 61,7 D) 113,5
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Suvning qattiqligi
1 litr suvni qattiqligini yo`qotish uchun 0,53 g soda sarflandi. Suvni qattiqligini (mg/ekv) aniqlang?
A) 4 B) 10 C) 2 D) 0,01
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1 litr suvni qattiqligini yo`qotish uchun 0,53 g soda sarflandi. Suvni qattiqligini (mg/ekv) aniqlang?
A) 4 B) 10 C) 2 D) 0,01
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Suvning qattiqligi
500 litr suvni (qattiqligi 3 mg/ekv ga teng.) yumshatish uchun qanday massadagi (g) Na2CO3 kerak?
A) 79,5 B) 66,25 C) 132,5 D) 265
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500 litr suvni (qattiqligi 3 mg/ekv ga teng.) yumshatish uchun qanday massadagi (g) Na2CO3 kerak?
A) 79,5 B) 66,25 C) 132,5 D) 265
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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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