The reason there is a difference between the mass of the candle before and after burning is that <u>C. Some of the </u><u>candle wax </u><u>was </u><u>converted </u><u>into</u><u> light energy. </u>
When a candle is being burnt, the candle wax acts as a fuel for the fire. This wax is burnt by the fire such that heat and light energy are formed. The candle wax was therefore converted from chemical energy to light energy.
The other options are wrong because:
- Gases escaping won't reduce mass of candle
- Masses were not the same after the candle was burnt
- The law of conservation of mass still applies but the mass simply transferred to another form
In conclusion, the mass of the candle changed because some of the wax was converted to light energy.
<em>Find out more at brainly.com/question/12799946.</em>
We can actually deduce here that with the current neuroimaging techniques, all the following things can be measured non-invasively except: Neuronal firing rates.
<h3>What is neuroimaging techniques?</h3>
Neuroimaging or brain scanning technique is actually known as the use of various techniques to produce the image of the structure, function of the brain. It can be done directly or indirectly.
This neuroimaging makes it possible for neuroscientists to see the inside of the brain.
The options that complete the question are:
1.oxygen content.
2. blood flow.
3. neuronal firing rates.
4. physical structures.
Thus, neuronal firing rates is the correct answer.
Learn more about neuroimaging on brainly.com/question/9021692
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I believe the answer you looking for is luster
Good luck
