Onramps Unit 3

Draw the Lewis structure for Ethylene, C₂H₄. How many bonds exist between the two carbons?

• 1

• 2

• 3

• 4

Which of the following is the correct Lewis structure of ethynol (C₂H₂O)?

• a

• b

• c

• d

Tags

NGSS.HS-PS1-1

In which of the following are the bond angles most distorted by unbonded electron pairs?

• NH₃

• O₃

• SCl₄

• H₂O

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

• -1119 kJ/mol

• -151 kJ/mol

• -243 kJ/mol

• -945 kJ/mol

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

• x + y + z

• x – y – z

• y – x – 2z

• 2z – x – y

Tags

NGSS.HS-PS1-4

• -802

• 1420

• -1420

• 203

Tags

NGSS.HS-PS1-4

Which of the following statements is true?

• Work is the concerted flow of energy and is positive when it is done on the system.

• Heat is the concerted flow of energy and is positive when it is done on the system.

• Work is the concerted flow of energy and is positive when t is done on the surroundings

• Heat is the concerted flow of energy and is positive when it is done on the surroundings.

Tags

NGSS.HS-PS3-4

Draw the Lewis structure for Ethylene, C_2H_4. How many bonds exist between the two carbons?

• 1

• 2

• 3

• 4

In which of the following are the bond angles most distorted by unbonded electron pairs?

• NH_3

• O_3

• SCl_4

• H_2O