It would be c because it has to get hot so it is absorbing the heat not releasing it
Answer:
a) Q=19600W b)Q=60W
Explanation:
q=k.(T₀-T₁)/x
a)
T₀=inside temperature (K)= 273+15=288K
T₁=outside temperature(K)= 273-20=253K
x=5x10⁻³m
k=1.4W/m.K
∴q=9800W/m² ⇒ Q=q.Surface
Q=9800W/m² . 1m . 2m = 19600W.
b)
T₀=inside temperature (K)= 273+10=273K
T₁=outside temperature(K)= 273-15=258K
x=10x10⁻³m
k=0.024W/m.K
∴q=60W/m² ⇒ Q=q.Surface
Q=60W/m² . 1m . 2m = 120W.
Answer:
The solution is basic.
Explanation:
We can determine the nature of the solution via determining which has the large no. of millimoles (acid or base):
- If no. of millimoles of acid > that of base; the solution is acidic.
- If no. of millimoles of acid = that of base; the solution is neutral.
- If no. of millimoles of acid < that of base; the solution is basic.
- We need to calculate the no. of millimoles of acid and base:
no. of millimoles of acid (HNO₃) = MV = (1.3 M)(75.0 mL) = 97.5 mmol.
no. of millimoles of base (NaOH) = MV = (6.5 M)(150.0 mL) = 975.0 mmol.
<em>∴ The no. of millimoles of base (NaOH) is larger by 10 times than the acid (HNO₃).</em>
<em>So, the solution is: basic.</em>
Look at the instructions or listen to orders
Answer:
El pepe
Explanation:
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