21. Which of the follanwing metric prefises is paired with an incorrect ahbnevia

Question

21. Which of the follanwing metric prefises is paired with an incorrect ahbneviation? milli-, ml. b. micro-, ? a. c. centi, c d, kilo, e.mrga, M 22. The metric prefix "pico meansbase uns 23. In the SI system, the metric prefis "micro" means huase units 24. In the Sl aysiem, he abbreviation for the prefix, mepa, is a. 100 c 106 4109 e 10-12 a 1,000,00 b 10 a 1,000,000b 0.001 d. 0.000001 e. 0.01 e. mg e. M 25. lf the old saying, "If you give them an inch and they will take a mile", is statod in SI (metric) fashion, it would become "If you give them and they will ake a. 2.5 cm, 1.km h 0.4 cm, 2.2 km e. 16 cm. 2.5 km e. 22 cm, 1.06 km d. 0.4 cm 16km Convert 31°C to kelvins. a 104K 26. b. 33 K -055 K d. 63 K e. 242 K 27. How many significant figures are in the number 0.0502 b. 4 28. Which of the following is the symbol of an alkali metal b. Ca a. Na c. Al d. Pb e Fe 29. Which of the following elements is in the fourth period b.?? c Na d. C e. He a. Se 30. Which of the following represents the composition of the isotope, 1g K tm? 19 e, 39 p'.20 m a. 19e, 19 p.34 .19e, 19 pt.20e b. 20 e, 20 p, 19 no d. 39e,39 p*,19 n 31. Which of the following atoms has the largest namber of neutroes in the mucleus? 131 e.54 123 b. 5 130 C 52 120 Sb Te Xe Sn Which of the following is the correct formula for magnesiu a Mgl iodide? d. Mgzlr 32 e Mgl b. Mgzl c. Mgrlz

Explanation / Answer

21. a is correct option.

22. e is correct option.

23. d is correct option.

24. e is correct option

25. a is correct option

26.a is correct option

27.a is correct option

28.a is correct option

29.a is correct option

30.c is correct option.

31.c is correct option

32.e is correct option.

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