Answer:
Explanation:
The question is what do all types of waves transfer. Waves, both mechanical and electromagnetic are disturbances that transfer energy without transporting matter. It doesnt matter wether they are propagating trough a medium or trough vacuum. Therefore the correct answer is A. energy.
Answer: The partial pressure of the hydrogen gas is 93.9 kiloPascals.
Explanation:
The partial pressure of the water vapors = 
The partial pressure of the hydrogen gas = 
The pressure measured in the collecting bottle = 
While collecting the hydrogen gas in a collecting bottle with amount of water vapors also get introduced. The total pressure in the collecting bottle will be due to partial pressures of the water vapors and hydrogen.



The partial pressure of the hydrogen gas is 93.9 kiloPascals.
Dry ice is made with co2 and if you pour water over it smoke comes as the ho2 is reacting with the co2