395.2kcal
Explanation:
Given parameters:
Energy required to break one C-H bond = 98.8kcals
Unknown:
Energy required to break methane = ?
Solution:
The bond dissociation energy is the heat energy absorbed in breaking a covalent bond in the gas phase to its constituents elements.
Solving
CH₄ has 4 C-H bonds
To break 1 C-H bond, 98.8kcals of energy was used,
To break 4 of the bonds; 4 x 98.8kcals will be used = 395.2kcal
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The answer to the question is D
Answer:
B is the correct answer.
Explanation:
The sensory receptors in the nose send signals to the olfactory bulb. These signals are then processed by the brain, which sends a response. Olfactory bulb is the one that receives olfactory(relating to the sense of smell) information which is then relayed to other parts of the brain.
Answer:
3: Evaluate Your Sources D
Explanation:
Deshaun is determining which sources are most appropriate for his research project. Here he can evaluate a variety of sources such as newspaper articles, magazines, journals, or books, and websites. So, it is important for him to make sure that he includes only authentic any valid information in his research.
So, he needs to evaluate his sources using several criteria like:
-
Accuracy
- Scope / Relevance
- Current/ up to Date
- Objectivity
- Reliability
- Style
- Functionality
Using these criteria he can evaluate his sources to choose the best and appropriate one for him.
Hope it help!