Answer:
AuCl
Explanation:
Given parameters:
Mass of Gold = 2.6444g
Mass of Chlorine = 0.476g
Unknown:
Empirical formula = ?
Solution:
Empirical formula is the simplest formula of a compound. Here is the way of determining this formula.
Elements Au Cl
Mass 2.6444 0.476
Molar mass 197 35.5
Number of moles 2.6444/197 0.476/35.5
0.013 0.013
Divide by the
smallest 0.013/0.013 0.013/0.013
1 1
The empirical formula of the compound is AuCl
Answer: [H3O+] > [OH-] and Kw = 1 x 10 -14
Explanation:
i just had this question and tried to look it up and i got it right by guessing my bad but i hope this is ur answer as well
Answer:
The condensation of water vapor driven by clouds in the atmosphere
Explanation:
Hope this helps:)
Answer:
Percent yield = 88%
Explanation:
Given data:
Mass of C₇H₆O₃ = 200.0 g
Actual yield of aspirin = 231 g
Percent yield = ?
Solution:
Chemical equation:
C₇H₆O₃ + C₄H₆O₃ → C₉H₈O₄ + C₂H₄O₂
Number of moles of aspirin:
Number of moles = mass/molar mass
Number of moles = 200.0 g/ 138.12 g/mol
Number of moles = 1.45 mol
Now we will compare the moles of aspirin with C₇H₆O₃.
C₇H₆O₃ : C₉H₈O₄
1 : 1
1.45 : 1.45
Theoretical yield of aspirin:
Mass = number of moles × molar mass
Mass = 1.45 g × 180.158 g/mol
Mass = 261.23 g
Percent yield:
Percent yield =( actual yield / theoretical yield )× 100
Percent yield = (231 g/ 261.23 g)× 100
Percent yield = 0.88 × 100
Percent yield = 88%
C,
takes dead things, makes them into other things