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33. Natriy karbonat eritmasiga CaCl₂·6H₂O qo`shilsa

1. Natriy karbonatning 10% li 300 g eritmasiga necha gramm CaCl₂·6H₂O qo`shilsa,natriy karbonatning massa ulushi 6,2 % ga teng bo`ladi?

A)21,9 B)10,6 C)9,8 D)31,7

2. Natriy karbonatning 20% li 500 g eritmasiga necha gramm CaCl₂·6H₂O qo`shilsa,natriy karbonatning massa ulushi 12 % ga teng bo`ladi?

A) 73 B) 85 C) 97 D)31,7

3. Bariy xloridning 17 % li 800 g eritmasiga necha gramm glauber tuzi qo’shilsa, bariy xloridning massa ulushi 10 % ga teng bo’ladi?

A) 98 B) 84 C) 112 D) 78

4. Natriy sulfatning 25 % li 560 g eritmasiga necha gramm BaCl₂·2H₂O qo`shilsa,natriy sulfatning massa ulushi 15 % ga teng bo`ladi?

A) 121 B) 87 C) 132 D) 95

5. Bariy xloridning 20 % li 600 g eritmasiga necha gramm glauber tuzi qo’shilsa, bariy xloridning massa ulushi 10 % ga teng bo’ladi?

A) 90 B) 81 C) 103 D) 79

6. Natriy sulfatning 22 % li 450 g eritmasiga necha gramm BaCl₂·2H₂O qo`shilsa,natriy sulfatning massa ulushi 13 % ga teng bo`ladi?

A) 68.6 B) 81.5 C) 89.4 D) 74.2

7. Kalsiy xloridning 10 % li 1.2 kg eritmasiga qanday massadagi (g) kristall soda qo’shilsa, kalsiy xloridning massa ulushi 4 % ga teng bo’ladi ?

A) 169 B) 187 C) 154 D) 173

8. Natriy karbonatning 18 % li 400 g eritmasiga necha gramm CaCl₂·6H₂O qo`shilsa,natriy karbonatning massa ulushi 12% ga teng bo`ladi?

A) 56 B) 35 C) 44 D) 61

9. Kalsiy xloridning 40 % li 300 g eritmasiga qanday massadagi (g) kristall soda qo’shilsa, kalsiy xloridning massa ulushi 20 % ga teng bo’ladi ?

A) 169 B) 187 C) 115.7 D) 173

10. Bariy xloridning 15 % li 700 g eritmasiga qanday massadagi (g) kristall soda qo’shilsa, kalsiy xloridning massa ulushi 9 % ga teng bo’ladi ?

A) 69 B) 55.6 C) 54 D) 73