Answer:
<h3>25.0 grams is the mass of the steel bar.</h3>Explanation:
Heat gained by steel bar will be equal to heat lost by the water
Mass of steel=
Specific heat capacity of steel =
Initial temperature of the steel =
Final temperature of the steel =
Mass of water=
Specific heat capacity of water=
Initial temperature of the water =
Final temperature of water =
On substituting all values:
Answer:
The minimum rate of fresh air in the room is 176 moles/min
Explanation:
High exposure of CO₂ has health effects as headaches, increased heart rate, elevated blood pressure, coma, asphyxia, convulsions, etc.
0,500 mole% of CO₂ in air means 0,500 moles of CO₂ per 100 moles of air
As the rate of sublimation of CO₂ is 0,880, the minimum rate of fresh air in the room must be:
X = <em>176 moles of Air/min</em>
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I hope it helps!