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Anitta halogen etid kaline carth lent one of those 20. The speelt zo henta of copper and olive 0:1 are 0.325 / 19°C and 2.00 3/19°C), respectively piece of copper at is was added to 128 grams of olive 01 2 23.0°C in pertgerly insulated containers 18 the imat ceperature was 11.0 °C, what was the mass of the copper? h0.803 g 3. 22.79 C.665.9 D. 24.69 s 756.9 21. A 2.69 9 sample of klo 8 - 122.5 g/molel that was 63.4 pero was decomposed by feat What volume does the dry oxygen gas which was formed occupy at 0.880 atmospheres pressure and 2 KClO3 2 KC 302 A 1.56 litera 3. 0.627 liters C. 0.279 liters D. 0.418 12ters E 0.468 liters 49 ° - 22. What mass of calcium carbonate, Caco (M = 100 g/molel. 28 required to react with 301. m of 3.12 M HCl solution? са соз 2 HCl -------> CaCl2 CO2 120 A 47.09 3. 128. 9 C. 188. g D. 93.9 g 3.63.99 23. Which of the following exhibits the HIGHEST polarity (Electronegativities:Br - 2.8, I = 2.5, B. - 2.0.0 - 3.0 and At = 2.1) A. BI 3. BBr3 c. 301₂ D. BAT, 3. None of these has a dipole coment
19. The element chia classified as a fan A. alkali metal B. halogen C. retalloid D. alkaline earth element E none of these 20. The specific heats of copper and olive oil are 0.385 J/t9°c) and 2.00 J/19°c)respectively. A piece of copper at 338 °C was added to 128 grams of olive oil at 21.0 °C in a perfectly insulated container. 1 the final temperature was 31.0 °C, what was the mass of the copper? A. 0.803 9 3. 21.79 c. 665.9 D. 24.5 g E. 756. 9 21. A 2.69 $ sample of King (M = 122.5 g/mole) that was 63.1 pure was decomposed by heat. What volume does the dry oxygen gas which was formed occupy at 0.880 atmospheres pressure and 49 °C 2 ксіз 2 KOI + 302 A. 1.56 liters B. 0.627 liteze C 0.279 liters D. 0.418 liters E. 0.468 liters 22. What mass of calcium carbonate, caco. (M = 100 g/molel, s required to react with 301. mL of 3.12 M HCl solution? са соз 2 нс1 -> CaCl2 + CO2 - 520 A 47.09 B. 128. g C. 188. 9 D. 93.99 E. 63.99 3. Which of the following exhibits the HIGHEST polarity? (Electronegativities: Br = 2.8. 1 - 2.5, and At - 2.1) B = 2.0, Cl = 3.0 -- A. BIB 3. BB23 C. BC D. DAS
30. The specific hoate of copper and olive oil are 305 31 and 2.00 / rappelenty or insulated container 16 the final cosperatures St. o peitetty what was the mass of the copper? A 0.803 9 B. 21.79 c. 665.9 D. 24.69 8.756.9 21. A 2.69 g sample of KCIO, (- 122 5 9/mole) that was 63.6 pure was decomposed by hear What volume does the dry oxygen gas which was formed occupy at 0.880 atmospheres pressure and 49 °C 2 ксіз 2 KCI 3.02 A 1.56 liters B. 0.627 liters C. 0.279 liters D. 0.418 laters E. 0.468 liters 22. What mass of calcium carbonate, caco ( - 100 g/molel, s required to react with 301. mL of 3.12 M HCl solution? Сасоз 2 HCI -------> Caciz CO2 H2O A. 47:09 B. 128.9 C. 188.9 D. 93.99 E. 63.99 23. Which of the following exhibits the HIGHEST polarity? (Electronegativities: Br = 2.3, 1 - 2.5. B = 2.0, C! - 3.0, and At = 2.1) A. 313 B. BBC c. 3013 D. BAT3 3. None of these has a dipole moment.