Suppose the exhaust system on a heat engine is not functioning properly. which statement best explains how this will affect the engine? the temperature of the gas will not increase during the compression stage. burned gases will not be released into the surrounding air. the fuel-air mixture will not be able to enter the cylinder. combustion and subsequent gas expansion will not occur.

Burned gases will not be released into the surrounding air.

Option 2)

Burned gases will not be released into the surrounding air.

Explanation:

Given that the exhaust system on a heat engine is not functioning properly.

An exhaust system is a system which transfers  waste gases and other combustion products away from an automobile engine.

This system is the reason for  the vehicle to operate with minimal noise, smoke and pollution transmitted to the environment.

An improperly maintained exhaust system leads to the storage of burned gases inside only because the system is essential to the clean and efficient operation of the car

So option 2 is right.

b) 10 minutes

girls stopped for 10 minutes.

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂