The total energy released per gram of methane in the experiment is 119941.33 J/g
<h3>How to determine the change in the temperature of water</h3>
- Initial temperature of water (T₁) = 25 °C
- Final temperature of water (T₂) = 68 °C
- Change in temperature (ΔT) = ?
Change in temperature (ΔT) = T₂ – T₁
Change in temperature (ΔT) = 68 – 25
Change in temperature (ΔT) = 43 °C
<h3>How to determine the heat absorbed by the water</h3>
The absorbed by the water can be obtained as illustrated below:
- Mass of water (M) = s00 g
- Change in temperature (ΔT) = 43 °C
- Specific heat capacity of the water (C) = 4.184 J/gºC
- Heat (Q) =?
Q = MCΔT
Q = 500 × 4.184 × 43
Q = 89956 J
<h3>How to determine the energy released by methane in the experiment</h3>
- Heat absorbed by water = 89956 J
- Percentage of heat absorbed by water = 30%
- Heat released by methane =?
Heat absorbed by water = 30% of heat released by methane
89956 = 30% × heat released by methane
89956 = 0.3 × heat released by methane
Divide both sides by 0.3
Heat released by methane = 89956 / 0.3
Heat released by methane = 299853.33 J
<h3>How to determine the heat released per gram of methane</h3>
- Heat released by methane (Q) = 299853.33 J
- Mass of methane (m) = 2.5 g
- Heat per gram (ΔH) =?
Q = m × ΔH
Divide both sides by m
ΔH = Q / m
ΔH = 299853.33 / 2.5
ΔH =119941.33 J/g
Learn more about heat transfer:
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Answer: An atom that has gained an electron.
Explanation:
The number of protons in an atom cannot change except for some exceptional circumstances.
Cations (or metal ions) are formed when atoms lose electrons, as they want to form a complete outer electron shell to become as stable as possible.
For example, potassium is a 1+ ion, because it has one electron in its outer shell (and in group one). Therefore, to become more stable that electron is lost to become an ion or cation. As one electron is lost, the potassium cation charge is 1+ as the charge of an electron is 1-.
Answer:
The Monomer is Carbon
Explanation:
Carbon is the smallest unit that forms the polymer diamond
Answer:
Aerosol cans carry warnings on their labels that say not to incinerate (burn) them or store the cans above a certain temperature. This problem will sho why it is dangerous to dispose of aerosol cans in a fire. The sa in a used aerosol can is at a pressure of 103 kPa at 25℃.
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