Answer:
10.6 moles of CO₂ are produced in this combustion
Explanation:
The combustion reaction is:
2C₂H₆ (g) + 7O₂ (g) ⟶ 4CO₂ (g) + 6H₂O (g)
We assume the ethane as the limiting reactant because the excersise states that the O₂ is in excess.
We make a rule of three:
2 moles of ethane can produce 4 moles of CO₂
Therefore 5.30 moles of ethane will produce (5.3 . 4) /2 = 10.6 moles
NH3 = water (it is actually a water soluble gas)
C6H14 = CCl4 (C6H14 won't mix with water at all)
Na2S = water (Na2S is a salt. Salts dissolve best in water)
Br2 = CCl4, but it will also dissolve in water.
Answer:
D
Explanation:
To convert from celcius to kelvin add 273 to the celcius number. D has -75 celcius so if you add -75 to 273 you get 198 K
Answer:
Sulfur
Explanation:
A non-metal in the third period that should have chemical properties similar to oxygen is sulfur.
This is because elements in the same group/family have similar chemical properties.
- Chemical properties is predicated on the number of valence electrons within an atom.
- The number of valence electrons is the number of outermost shell electrons within an atom.
- Elements combines with one another using these valence shell electrons.
- Since sulfur is in the third period and the same vertical group as oxygen, they have similar chemical properties.
