Answer:
37.18°C.
Explanation:
- The amount of heat absorbed by water = <em>Q = m.c.ΔT.</em>
where, Q is amount of heat absorbed by water (Q = 5.75 x 10⁵ J).
m is the mass of water (m = 2190 g).
c is the specific heat capacity of liquid water = 4.18 J/g°C.
ΔT is the temperature difference = (final T - initial T = 100.0°C - initial T).
∴ Q = m.c.ΔT = 5.75 x 10⁵ J.
5.75 x 10⁵ J = (2190 g)(4.18 J/g°C)(100.0°C - initial T)
∴ (100.0°C - initial T) = (5.75 x 10⁵ J)/(2190 g)(4.18 J/g°C) = 62.81°C.
<em>∴ initial T = (100.0°C - 62.81°C) = 37.18°C.</em>
Answer:
4.3 x 10(d) J
Q= 400 x 45 x 0.233 = 4.419 kj
Explanation:
Not sure if this is what your looking for... hope it helps though :)
The formula for the formation of ammonia is 2(N2) + 3(H2) = 2(NH3)
3 moles of H2 make 2 moles of NH3 so 8.7 * (3/2) = 13.05 moles of H2
A mole of H2 is 2.01588 grams. 2.01588 * 13.05 = 26.31 grams of hydrogen
Oils are energy efficient nutrients.
Los aceites son nutrientes eficientes energéticamente.
Explanation:
Also, the water molecules are not changed when sugar is dissolved in water to form a sugar solution. We can easily get back the sugar by evaporation of water from the sugar solution. The evaporated water can then be condensed to recover the water also. Hence, it is a physical change and not a chemical change.