Chemistry - Fill in the Blanks type questions on Fundamental Concepts Part - 2

21. The degree of a measured quantity __________ with increasing number of significant figures in it.

22. The atomic mass of sodium is __________.

23. The symbolic representation of a molecule of a compound is called __________.

24. Molecular formula of CHCl3 and its Empirical formula is __________.

25. Molecular formula of benzene is C6H6 and its empirical formula is __________.

26. 58.5 is the __________ of NaCl.

27. 4.5 gms of nitrogen will have __________ molecules.

28. 28 gms of nitrogen will have __________ molecules.

29. 2 moles of SO2 is equal to __________ gms.

30. 1000 gms of H2O is equal to __________ moles.

31. The reactions, which proceed in both directions, are called __________.

32. The reactions, which proceed in forward directions only, are called __________ reactions.

33. The __________ reactions are completed after some time.

34. 0.0006 has __________ significant figures

35. 7.40 x 108 has __________ significant figures.

36. 7 x 108 has __________ significant figures.

37. Usually Molecular formula is simple multiple of the __________.

38. 0.1 mole of H2O contains __________ molecules of H2O.

39. Mass of 3.01 x 1022 molecules of CO2 is __________.

40. __________ is the branch of science which deals with the properties, composition and structure of matter.

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