I kimyoning asosiy tushuncha va qonunlari

12.Oltin atomining absalut massasi nechi gramga teng.
A) 366,02•10^-24 B) 1,744 • 10^-22 C)327,02•10^-24


13. Bariy atomining absalut massasi nechi kg teng.
A) 266,07•10^-22 B) 227,42 • 10^-27 C)227,02•10^-24


14.Simob atomining absolyut massasi necha grammga teng?
A)3,338 •10^-22 B)1,2•10^-23 C)1,5•10^-22 D)5,1•10^-22


15.Molekulasining massasi 73,04•10^-27 kg bo`lgan moddaning nisbiy molekuliyar massasini (Mr) aniqlang.
A) 32 B) 44 C) 16 D) 28


16. Xona temperaturasidagi oltingugurt bug‘i tarkibida bita molekula S_x ning massasi 4,26 ·10^-22 g ga teng. Oltingugurt atomining massasi 5,32·10^-23 g ga teng bo‘lsa, polioltingugurtda x ning qiymatini toping.
A) 6 B) 8 C) 10 D) 12
17.Molekulasining massasi 0,16268•10^-21 gr bo`lgan moddaning nisbiy molekuliyar massasini (Mr) aniqlang.
A) 133,5 B) 62 C) 63 D) 98


18. Azotning 1 ta molekulasining massasi (g) qanchaga teng?
A) 28 B) 14 C) 4,65•10^-23 D) 2,32•10^-23


19. Germaniy (IV)oksidning bitta molekulasining massasini(g) hisoblang.
A) 3,06• 10^-22 B) 4,651• 10^-23
C) 2,63• 10^-23 D) 1,744 • 10^-22


20. Molekulasining massasi 104,6•10^-24 gr bo`lgan moddaning nisbiy molekuliyar massasini (Mr) aniqlang.
A) 133,5 B) 62 C) 63 D) 36,5


21. 100 dona azot atomining massasi necha gramm bo‘ladi?
A) 2,325•10^-21 B) 2,325•10^-24
C) 1,7•10^-21 D) 1,39 •10^-22


22. Sellyuloza bitta molekulasining haqiqiy massasini toping.
A ) 22,4•10^-25 B) 33,2•10^-24
C) 26,9•10^-26 D) 28,9 •10^-26


23. Oqsil molekulasining m_ab= 53,156 •10^-20 g bo‘lsa, oqsilning molyar massasini toping.
A) 320000 B) 325000 C) 300000 D) 32000


24. Oqsil molekulasining massasi (m_ab=8,3056•10^-19 g) bo‘lsa, uning nisbiy molekulyar massasini toping.
A) 50000 B) 500000 C) 60000 D) 3200