23. Which of the following utin used in expressing the amount

of substance in terms of the number of particles

a. Liter b. Gram

c. Mole d. Celcius

24. Given the atomic masses of Bulgur (32g) and oxygen (169) What

is the molar mass of sulfate (304)

a. 93 g/mo1 b. 96 g/mol

c. 98 g/mol d. 97 g/mol

25. What do you expect to observe in a "Mole Exhibit of Different

Substances?"

a. Different kinds of element

b. Direrent colors of substances

C. Showcase of one mole of an element of different masses
d. Showcase of different substances having the same mass

26. How many grams are there in 1.2 moles of carbon monoxide

a. 33.0g b. 33.6g

C. 43.2g

d. 40.0g 27

27. What is the representative particle of ionic compound?

a. Atom b. Ieri

c- molecule

d. formula unit

28. The molar mass of sulfuric acid is approximately:

a. 90g/mol b. 38 g/mol

c. 36 g/mol d. 90 g/mol

29. How many molecules of Ca are present in 100 g of Caco.? (Ca=409)

a. 1.1 molecules

b. 1.0 molecules

c. 1.3 molecules d. 1.5 molecules

30. The mathematical value of Avogadro's number is

a. 6.02x10

b. 6.2 x 10

c. 6.3 x 10 d. 6.4 x 10