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Answer:
A fire extinguisher
Explanation:
A lab station usually contains equipment for the people working at the station to use. However, most rooms will only have one fire extinguisher for the whole room meaning it would most likely be located somewhere that is easy to access by all and not just a singular lab station.
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The sun is made up of defferent gases due to high massive therefore th density is commonly very high o the gravity is more thwe any other planet in our solar system.
Answer:
22.9g of H₂O are produced
Explanation:
The reaction of hydrogen with oxygen is:
2H₂(g) + O₂(g) → 2H₂O(g)
<em>Where 2 moles of hydrogen react with 1 mole of oxygen to produce 2 moles of water</em>
<em />
Moles of hydrogen are:
2.56g × (1mole / 2.01g) = <em>1.27moles H₂</em>
Moles of oxygen are:
20.3g × (1mole / 32g) = <em>0.634moles O₂</em>
These moles of oxygen react with:
0.634moles O₂ × (2mol H₂ / 1mol O₂) =<em> 1.27mol H₂</em>
<em>-All hydrogen in reaction-</em>
And produce:
0.634moles O₂ × (2mol H₂O / 1mol O₂) =<em> 1.27mol H₂O</em>
In grams:
1.27mol <em>H₂O </em>× (18.01g / 1mol) = <em>22.9g of H₂O are produced</em>
The answer to your question:
-71,488 J
