Answer:
The answer to your question is C = 2.01 J/g°C
Explanation:
Data
mass = m = 278 g
Temperature 1 = T1 = 0.8°C
Temperature 2 = T2 = 15.9 °C
Heat = Q = 8.46 x 10³ J
Heat capacity = C = ?
Process
1.- Write the formula to calculate the heat
Q = mC(T2 - T1)
2.- Solve for C
C = Q / m(T2 - T1)
3.- Substitution
C = 8.46 x 10³ / 278 (15.9 - 0.8)
4.- Simplification
C = 8.46 x 10³ / 4197.8
5.- Result
C = 2.01 J/g°C
Answer:tetrahedral
Explanation:
According to Valence Shell Electron Pair Repulsion Theory (VSEPR). The number of electron pairs on the valence shell of the central atom in a molecule influences the shape of that molecule. Four electron pairs around the central atom of a molecule leads to a tetrahedral geometry as predicted by VSEPR.
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Answer:
A. to show the number of lithium atoms involved in the reaction
Explanation:
The reaction between lithium and sulfur produces lithium sulfide where two lithium and one sulfur atoms react.
Balanced equation: 2 Li + S = Li2S
The 2 present before Li on the reactant's side shows how many lithium atoms are supposed to be present per every 1 sulfur atom for this reaction to be balanced and true.
That is it! :)
has only one sp2 orbitals,
<span>Only one sp2 shell is filled up because it ammonia has only 5 valence electrons. Considering ammonia's trigonometrical pyramid shape, 3 hydrogen atoms are attached to Nitrogen. A lone pair remains unattached to any other atom and results to hybridization of sp3 orbitals.</span>
