Explanation:
2. 
First, we need to find the number of moles of
at 300K and 1.5 atm using the ideal gas law:


Now use the molar ratios to find the number of moles of ethane to produce this much
.


Finally, convert this amount to grams using its molar mass:


3. 
Convert 75 g Zn into moles:

Then use the molar ratios to find the amount of H2 produced.

Now use the ideal gas law
to find the volume of H2 produced at 23°C and 4 atm:


I think is energy passing and if its not im so sorry :(((
Answer:
Chemoautotrophs
Explanation:
Autotrophs are groups of organisms that are capable of manufacturing their own food (organic molecules) through the fixation of carbon dioxide. There are two types of autotrophs:
- <em>Photoautotrophs fix carbon dioxide by using light as the energy for driving the process.</em>
- <em> </em><em>Chemoautotrophs f</em><em>ix carbon dioxide by using energy from the oxidation of inorganic molecules such as magnesium, or sulfur.</em>
Chemoautotrophs usually inhabit extreme environment such hot vents, deep sea, etc.