Q = ?
Cp = 0.397 J/ºC
Δt = 40.3 - 21.0<span> => 19.3</span><span> ºC</span>
m = 15.2 g
Q = m x Cp x Δt
Q = 15.2 x 0.397 x 19.3
Q ≈ 116.46 J
<span>hope this helps! </span>
Answer:
A. thermal and light
Explanation:
• Light energy is the first energy produced by the bulb, with time heat energy or thermal energy is also produced.
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Answer:
Mass of aluminium in sample = 3.591 g ≅ 3.6 grams
Explanation:
Given that, A sample of aluminum absorbs 50.1 J of heat, upon which the temperature of the sample increases from 20.0°C to 35.5°C.
the specific heat of aluminum is 0.900 J/g- °C
The relation between heat absorbed and change in temperature is given by, Q = msΔT.
where Q = heat absorbed
m = mass of the substance
s = specific heat of substance
ΔT = change in temperature
Now, in our case, Q = 50.1 J ; s = 0.900 J/g- °C; ΔT= 35.5-20 = 15.5°C
⇒ m = ![\frac{Q}{s(T_{2} -T_{1}) }](https://tex.z-dn.net/?f=%5Cfrac%7BQ%7D%7Bs%28T_%7B2%7D%20-T_%7B1%7D%29%20%7D)
⇒ m =
= 3.591 g ≅ 3.6 g
⇒ m ≅ 3.6 g
Answer:
1 Ca(OH)2 + 2 HCl ---> 1 CaCl2 + 2 H2O