NF 4

The figure below shows a flownet for the condition of a line of sheet-piling driven into a stratum of homogenous sandy soil. Determine the number of flow lines and equipotential lines.

• Nf = 4, Nd = 14

• Nf = 5, Nd = 13

• Nf = 4.5, Nd = 13

• Nf = 4.5, Nd = 14

What is the chemical formula for nitrogen trifluoride?

Which of the following is a property of nitrogen trifluoride?

• It is a colorless gas.

• It is a solid at room temperature.

• It is a liquid at room temperature.

• It is a metal.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the molecular geometry of nitrogen trifluoride?

• Trigonal planar

• Tetrahedral

• Trigonal pyramidal

• Linear

In the context of nitrogen trifluoride, what does the 'NF' stand for?

• Nitrogen fluoride

• Nitrogen trifluoride

• Nitrogen tetrafluoride

• Nitrogen difluoride

Tags

NGSS.MS-PS1-1

Which of the following reactions involves nitrogen trifluoride?

• @@ ext{NF}_3 + ext{H}_2 ightarrow ext{NH}_3 + ext{HF}@@

• @@ ext{NF}_4 + ext{H}_2 ightarrow ext{NH}_3 + ext{HF}@@

• @@ ext{N}_2 + ext{F}_2 ightarrow ext{NF}_3@@

• @@ ext{N}_2 + ext{F}_2 ightarrow ext{NF}_4@@

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the bond angle in nitrogen trifluoride?

• 104.5 degrees

• 107 degrees

• 109.5 degrees

• 120 degrees

Which of the following is a use of nitrogen trifluoride in industry?

• As a refrigerant

• In semiconductor manufacturing

• As a fertilizer

• In food preservation

What is the molar mass of nitrogen trifluoride?

• 71 g/mol

• 72 g/mol

• 73 g/mol

• 74 g/mol

How many valence electrons are present in a molecule of nitrogen trifluoride?

• 24

• 26

• 28

• 30

Tags

NGSS.HS-PS1-1