I kimyoning asosiy tushuncha va qonunlari

1.5. ATOM BA MOLEKULALARNING ABSOLYUT VA NISBIY MASSALARI


1. Nomalum atomning massasi maxsus tekshirishlar natijasida 91,3*10^-24 gr ekanligi aniqlandi. Uning nisbiy atom massasini (Ar) aniqlang.
A) 55 B) 64 C) 24 D) 40


2. Nomalum atomning massasi maxsus tekshirishlar natijasida 26,56*10^-27 gr ekanligi aniqlandi. Uning nisbiy atom massasini (Ar) aniqlang.
A) 16 B) 32 C) 14 D) 7


3. Titan atomining massasini (kg) toping.
A) 7,97·10^-26 B) 7,11·10^-26
C) 7,97·10^-20 D) 6,97· 10^-26


4. Modda molekulasining massasi 5,65·10^-26 bo‘lsa, uning nisbiy molekulyar massasi qanchaga teng?
A) 34 B) 36 C) 38 D) 32


5. Grafitda 120 ta uglerod atomi bolsa, grafitning xaqiqiy massasini toping.
A) 2,9774·10^-25 B) 4,5597·10^-26
C) 2,3916·10^-21 D) 1,5643·10^-26


6. Kristall soda tarkibidagi tuz va kristallizatsiya suvining mol nisbati 1:10 bo‘lsa, tuzning absalyut massasini (kg) toping.
A)47,5·10^-26 B)70,43·10^-26
C)45,32·10^-26 D)72,7·10^-26


7. Nomalum atomning massasi maxsus tekshirishlar natijasida 1,5936*10^-22 gr ekanligi aniqlandi. Uning nisbiy atom massasini (Ar) aniqlang.
A) 76 B) 48 C) 56 D) 96


8. Nomalum atomning massasi maxsus tekshirishlar natijasida 0,488*10^-24 gr ekanligi aniqlandi. Uning nisbiy atom massasini (Ar) aniqlang.
A) 294 B) 232 C) 137 D) 207


9. Mis atomining absolyut massasi necha gram?
A) 3,9 • 10^-23 B)1,063 • 10^-22
C) 6,4 • 10^-23 D) 2• 10^-22


10. Massaning atom birligi qiymatini ko‘rsating.
A) 1,993•10^-23 B) 1,66•10^-24 C) 1 D) 1/12


11. Agar molekulaning massasi 44 m.a.b. ga teng bo‘lsa, uning 1 mol miqdoridagi molekulalar massasini toping.
A) 73 B) 6,02•10²³ C) 44 D) 3,67