Answer: limiting reactant controls the amount of product formed in a chemical reaction.
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~ 234483279c20~
Answer:
46.67 g
Explanation:
From the question given above, the following data were obtained:
Change in temperature (ΔT) = 23.8 °C
Heat (Q) = 261 J
Specific heat capacity (C) of silver = 0.235 J/gºC
Mass of silver (M) =?
The mass of the sample of silver can be obtained as follow:
Q = MCΔT
261 = M × 0.235 × 23.8
261 = M × 5.593
Divide both side by 5.593
M = 261 / 5.593
M = 46.67 g
Thus, the mass of the sample of silver is 46.67 g
Answer:
Final temperature = 91.75 °C
Explanation:
Given data:
Mass of water = 45 g
Initial temperature = 12 °C
Energy required = 15 Kj (15000 j)
Final temperature = ?
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Solution:
Q = m.c. ΔT
15000 j = 45 g × 4.18 j/g.°C × (T2 -T1)
15000 j = 45 g × 4.18 j/g.°C × (T2- 12 °C)
15000 j = 188.1 J/°C × (T2- 12 °C)
15000 j / 188.1 J/°C = T2- 12 °C
79.745 °C = T2 - 12 °C
T2 = 79.745 °C + 12 °C
T2 = 91.75 °C
