Answer:
ionic bonding occurs between ions and covalent bonding occurs when atoms have electrons in common (they share).
I attached the working and the answer to the question below.
Please note that C = speed of light, ν = frequency, λ= wavelength
<span> The wavelength of a 2.80 Hz wave is
1.07 </span>
× 10¹⁰
Answer:
Scientific ideas are changed when better ones are found.
Explanation:
Light travels in a straight line as a wave. It does not require any medium or material to travel like sound waves which means it can travel in vacuum.The speed of the light from the special theory of relativity is a constant value of 38x10^8m/second
Answer:

Explanation:
<em>Given:</em>
Mass of ferous (Fe) produced = 750 gram.
<em>To find:</em>
Mass of water produced= ?
<em>Solution:</em>
<em>Molar mass of Fe is 55.84 gram/</em><em>mol</em>
Let's find out the number of moles of ferous produced.

Substituting the given data in above formula.


Now the given reaction is,

- For every 3 mole of production of Fe, 4 mole of waters are produced.
- let for 13.43 moles of Fe x moles of H2O will be produced.
now calculate the number of moles of H2O


mass of one mole of H2O is 18 gram, so we can calculate mass of 17.90 moles.

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