SISC_SHS_TugOWits_2025_Elimination_Difficult_Round

Find the equation of a line that is perpendicular to the line 

2x+3y=6 and passes through the point (1, 2).

• 3x-2y-1=0

• 2x+3y+2=0

• 3x+2y-7=0

• 3x-2y+4=0

A compound contains 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. If its molar mass is 180 g/mol, what is its molecular formula?

• CH2​O

• • C2​H4​O2​

• C3​H6​O3

• C6​H12​O6​

Study the diagram that shows the change in membrane potential during an action potential. Identify where depolarization is occurring.

• Part A

• Part B

• Part C

• Part D

Determine the total enthalpy change of this reaction:
BrCl(g) ---> Br(g) + Cl(g)

Using the step equations given:

• -496.41 kJ

• 219.00 kJ

• 219.86 kJ

• 496.41 kJ

A 25 kg block was dropped from the top of a 20-m high platform. How fast is it moving when it is 5 m from the ground?

• 6.06 m/s

• 12.12 m/s

• 17.15 m/s

• 29.27 m/s