Answer:
The heat required is 1262.91 joules or 1.26 kilojoules.
Explanation:
The quantity of heat (Q) required to raise the temperature of a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)
Thus, Q = MCΦ
Since,
Q = ?
Mass of aluminum sample = 33.0g
C = 0.89 J/g℃
Φ = (Final temperature - Initial temperature)
= 68°C - 25°C = 43°C
Then, Q = MCΦ
Q = 33.0g x 0.89 J/g℃ x 43°C
Q = 1262.91 J
Since the heat in joules is 1262.91, obtain heat in kilojoules.
If 1000 joules = 1 kilojoules
1262.91 joules = Z
To get Z, cross multiply
Z x 1000 = 1262.91 x 1
1000Z = 1262.91
Z = 1262.91 / 1000
Z = 1.26291 kilojoules (when placed as 3 significant figures, Z is 1.26 kilojoules)
Thus, the heat required is 1262.91 joules or 1.26 kilojoules.
The inside of it. has it in there
Answer:
pH = 14
Explanation:
pOH = -log[OH-] = -log1,0 = 0
pH + pOH = 14
pH = 14 - pOH = 14 - 0 = 14
Because hidrogen ions in acid and hidroxide ions in base reacts to form H²O. Heat are produced in order the electrons to bond
10. ¿Con qué soñaba la autora cuando era niña? ¿Qué espera hoy?
11. ¿Cómo describe ella su identidad? ¿Cómo se define?
12. ¿Por qué escribe Esmeralda Santiago? ¿Qué quiere expresar a sus lectores?
