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Navoiy shahar 16-sonli ayrim fanlar chuqur o’rganiladigan ixtisoslashgan maktabi 9-“ ” sinf o’quvchisi
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səhifə | 5/12 | tarix | 27.09.2023 | ölçüsü | 87,29 Kb. | | #124064 |
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5-Nazorat ishi
Mavzu: Ishqoriy metallar. Soda ishlab chiqarish . Kalsiy va magniy. Suvning qattiqligi va uni yumshatish usullari.
Nazorat shakli:Masala yechish.
I-variant.
1. Massasi 516gr bo’lgan tabiiy gips kuydirilganda hosil bo’lgan alebastrning massasini hisoblang.
2.10gr CaCO3 dan necha gr Ca(HCO3)2 olinadi?
3.Mg(HCO3)2+Ca(OH)2=…………reaksiyani davon ettiring.
Kompetentlikni aniqlash uchun materiallar:
4.Kundalik hayotimizda eng ko’p uchratadigan natriynng qanday birikmalarini bilib oldingiz?
5.Ayollarimiz kir yuvish jarayonida qanday qilib qattiq suvni yumshatish usullaridan foydalanadilar?
II-variant.
1. 1,84gr dalomitni eritish uchun 10%li HCl eritmasidan necha gr kerak?
2.30gr MaSO4 dan necha gr Mg3(PO4)2olish mumkin?
3.CaSO4 +Na2CO3=………….reaksiyani davom ettiring.
Kompetentlikni aniqlash uchun materiallar:
4.Kundalik turmushimizda ishlatildigan soda formulalarini yozib bering.
5.Gipsdan qanday maqsadlarda foydalanamiz?
Yechish:
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