Answer:
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.
1.079 x 10⁹ km/h
<h3>
Further explanation</h3>
2.998 x 10⁸ m/s has been known as the speed of light.
Let us convert the unit m/s to km/hour.
Change in unit length:
If 1 km = 1,000 cm, then
Change in unit time:
If , then
The Process:
Remember, we must write the results in scientific notation, i.e.,
Thus the result of unit conversion is
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Keywords: speed of light, convert, m/s to km/h, unit length, time, hours, minutes, second, scientific notation
Answer:
the action or power of focusing one's attention or mental effort.
Explanation:
Keyword: <em>Focus </em>