Na2O + HCl→ NaCl +H2O
Does the equation above satisfy the law of mass conservation of matter.
No, since there are two sodium atoms as reactants, but only one sodium atom as a product.
<em><u>Explanation</u></em>
According to the law of mass conservation the number of atoms in the reactant side must be equal to the number of atoms in the product side.
For this reason the equation above does not satisfy the law of mass conservation since the number of sodium atoms are not equal in both side.
Answer is: 16,56 kJ.
1) m(NH₄Cl) = 5,35g.
m(H₂O) = d(H₂O) · V(H₂O) = 1g/cm³ · 100cm³ = 100g.
ΔT = 25,55°C - 21,79°C = 3,76°C.
Q = m(solution) · C(specific heat capacity of water) ·ΔT.
Q = 105,35g · 4,18 J/g·°C · 3,76°C = 1655,76J.
2) m(NH₄Cl) = 1mol · 53,5g/mol = 53,5g.
m(water) = d(H₂O) · V(H₂O) = 1g/cm³ · 1000cm³ = 1000g.
m(solution) = 1053,5g, ten times more than first solutn.
Q = 10 · 1655,76J = 16557,6J = 16,56 kJ.
Answer:
B. Coffee
Explanation:
Coffee, because every portion of the matter is the same, and its components can only be separated chemically.
