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12. Determine the number of H atoms in 1.22 x 1020 C Ho molecules. 4.46 x 10exp23 H atoms 2.00 x 10exp-23 H atoms 1.18 x 10ex
7. A liquid sample has the density of 11.9 g/cmº. Calculate volume in m3 if the mass is 0.225 kg 1.89 x 10exp-4 m3 9.10 m3 11
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  • 12. Determine the number of H atoms in 1.22 x 1020 C.Ho molecules. 1.18 x 10exp22...

    12. Determine the number of H atoms in 1.22 x 1020 C.Ho molecules. 1.18 x 10exp22 H atoms 7.32 x 10exp20 Hatoms 4.46 x 10exp23 H atoms 2.00 x 10exp-23 H atoms Question 13 13. A compound contains 20.24% Al and 79.76% Cl. Calculate the empirical formula. molar masses: Al = 26.98 g/mole and CI = 35.45 g/mole A1203 AICI3 AICI АІЗСІ

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