FUOYE CHM 101 CBT PRACTICE TEST EXAM MODE

1. Which of the following can be classified as a weak base?

2. What mass of HNO3(63g/mol) is contained in 300ml of 0.30 M HNO3 solution!

3. What symbol is used to express the facor,10^-6?

4. Elements with ___________ atomic mass are best possible candidates for a fusion reaction

5. What is the minimum energy barrier that must be overcomed for a chemical reaction to occur

6.

What is the expected freezing point of a 0.50m solution of Na2CO3 in water? Kf for water is 1.86°C/m

7.

The effect of ionizing radiation depend on

8. What is the oxidation number of the chromium atom in K2Cr2O4?

9. Radiation is detected by its ___________ properties

10.

A catalyst increases the rate of reaction by providing a different reaction pathway that

11. What is the electronic configuration of Potassium (K)?

12. Chlorine belongs to the ____________ group on the periodic table

13. Water is an example of

14. The energy of motion is

15. What is the identity of the element with 6 protons, 7 Neutrons and 6 electrons

16. The factor 0.001 corresponds to which prefix

17. Gamma radiation can be described as

18.

During an electrochemical reaction, electrons move through the external circuit toward the __________ and positive ion in the cell move toward the ____________.

19. Ozone is unstable, decomposing to oxygen, as shown in the balanced equation 2O2 ➡ 3O2. In this reaction, how many grams of oxygen can be formed from the decomposition of 96g of ozone?

20. Elements in a periodic group have similar

21. What is the overall reaction order for the reaction that has the rate law: k[H2] [NO] 2

22.

An isotope has a half-life of 30 minutes. Given an original sample of 100 g of the isotope, how much will be left after an hour?

23. Who is the Dean of Faculty of Science in Fuoye

24. A zeroth order reaction is one whose

25. Calculate the percentage composition of Nitrogen in Magnesium Nitrate Mg(No3)2

Mg =24.31

N= 14.01

O= 16

26. How many grams of KNO3 are needed to make 250ML of a solution that is 0.135M

27. What is the mole fraction of ethanol in a solution made by dissolving 25g of ethanol, C2H5OH, in 53.6g of Water

28. Using the method of initial rates for the reaction A➡B, if the initial concentration of A is doubled and the rate of reaction quadruples, what is the order of reaction with respect to A?

29. How many grams of chromium metal are plated out when a constant current of 8.00A is passed through an aqueous solution containing Cr3+ ions for 40 minutes

30. The number of nucleons in an atom or ion is the same as the

31. Which of the following supports Boyles law

32. According to history, the concept that all matter is composed of atom was first proposed by

33. Which group reacts violently with water?

34. Which of the following is not used to describe the condition of a gas?

35. What is the Mass number of Na?

36. Of the following, which element has the highest first ionization energy

37. Molarity is defined as ______

38. Which cell involves a non-spontaneous redox reaction?

39. What is the oxidation number of the chromium atom in K2Cr2O7

40. Which of the following compounds would be soluble in water?

41. Which of the following is not an Arrhenius acid?

42. A saturated solution is defined as

43. The Element that best describes Alpha decay is?

44.

Which of the following can be interpreted as a measure of randomness

45. Which cell involves a non-spontaneous redox reaction?

46.

What is the minimum energy barrier that must be overcome for a chemical reaction to occur

47. How many grams of nickel metal are plated out when a constant current of 15.0A is passed through aqueous NiCl2 for 80.0 minutes

48. An element that has the valence electronic configuration 3s2 3p3 belongs to which period and group?

49. Isotopes have the same number of __________ but different numbers of ___________ in their nuclei

50. The binding energy is defined as