Question 1

Which of the following statements are CORRECT?

Accepted Answer

II only

Answer

I and II

Answer

III only

Answer

II and III

Question 2

Which of the following has an empirical formula of C3H5?

Accepted Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/927e225056aa5f6e02e9cb042c2891c200677e93.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/878db3f3690e5a85739619f66f7be00331bc3d62.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/36edad3dce09c280bb07de641fbb2eba3804433d.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/72c81a6c0f454696029ae81faf69d9da9071640d.JPG

Question 3

To determine the molar mass of an element, one must know the element's —

Accepted Answer

atomic mass.

Answer

number of isotopes.

Answer

atomic number.

Answer

Avogadro constant.

Question 4

The molar mass of NO₂ is defined as the mass of —

Accepted Answer

1 mole of NO₂.

Answer

2 moles of NO₂.

Answer

2 molecules of NO₂.

Answer

1 molecule of NO₂.

Question 5

Which of the following statements are correct?

Accepted Answer

I, II, and III

Answer

III only

Answer

I and II

Answer

II and III

Question 6

Which of the following is the representative particle for COVALENT compounds?

Accepted Answer

molecules

Answer

electrons

Answer

atoms

Answer

formula units

Question 7

What is the correct formula to calculate Percent Composition?

Accepted Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/4f009087509aff7b50a0b7a8586f79603551dcc4.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/a41efb8c818de67c96f56b6c59d058a68b611040.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/3e08dd6549f220dd6922b985da730b4057771547.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/b1a54c94a6bff5a8ba1a4372ce926f9a55de6132.JPG

Question 8

Which pair consists of a molecular formula and its corresponding empirical formula?

Accepted Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/f62f263aebba2db5c785face73a05df0d935ef96.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/8ca118e14f4b97a0cb9d093e43f88b3f0ee6b96d.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/b92d39240f41365a53d7804c75ab1b0a491a5daf.JPG

Answer

https://uploads.quizalize.com/a9fdee3c-a70e-49d0-bd51-d156ac890248/question/ae557685f8f9f900969ed7eac775700dd032e1a6.JPG

Question 9

ONE mole is equal to all of the following EXCEPT —

Accepted Answer

the number of atoms in exactly 28 grams of carbon.

Answer

6.02 x 10²³ molecules.

Answer

the molar mass of an element or compound.

Answer

22.4 Liters

Question 10

Which represents the greatest molar mass?

Accepted Answer

1.0 mol Zn

Answer

1.0 mol Fe

Answer

1.0 mol Al

Answer

1.0 mol Cu

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