During the dark ages-All that wasn't around the christian religion were lost. Knowledge and discoveries before the Dark Ages were mainly in Greek ideas. Biblic scripts however were in Latin. Therefore all inventions up to the dark ages were lost and only religious scripts preserved in the churches. Outside the church, no one knew how to write, read or even communicate.
Answer:3.6 x 101 or 8.77 x 10-1
Ethanol is: flammable, liquid at room temperature, the boiling point is 78.37 ° C.
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Answer:</h3>
300 kPa
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Explanation:</h3>
Concept tested: Gas Laws (Combined gas law)
Initial pressure, P₁ = 100 kPa
Initial temperature,T₁ = 27°C
But, K = °C + 273, therefore, T₁ = 300 K
Initial volume, V₁ = 900 L
New temperature, T₂ = -73°C
= -73°C + 273
= 200 K
New volume, V₂ = 200 L
We are required to calculate the new pressure, P₂
- To find the new pressure of the gas, we are going to use the combined gas law;
- Combined gas law combines both Charles's law and Boyle's law.
- According to the combined gas law;
P₁V₁/T₁ = P₂V₂/T₂
- To calculate the new Pressure, P₂, we rearranging the formula;
P₂ =(P₁V₁T₂) ÷ (V₂T₁)
Therefore;
P₂ = (100 kPa × 900 L × 200 K) ÷ (200 L × 300 K)
= 300 kPa
Therefore, a pressure of 300 kPa must be applied.
