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2 years ago

The energy needed to remove an electron from an atom is called __________ energy.

Chemistry

2 answers:

MariettaO [177]2 years ago

8 0

<span>The energy needed to remove an electron from an atom is called ionization energy.</span>

aev [14]2 years ago

3 0

Answer: ionization

Explanation:

Ejection of electrons occur when incident light of frequency greater than threshold frequency falls on a metal, the electrons are ejected from metal.

Ionization is the amount of energy requires to remove the most loosely bound electron from an isolated gaseous atom

Valence is the outermost shell which contains the most loosely bound electron.

Electronegativity is the tendency of an atom to attract the shared pair of electrons towards itself.

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When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 15.6 g of carbon were burned in the presence of

NeX [460]

Answer: 5.72 g mass of carbon dioxide was produced

Explanation:

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Moles of $O_2\text{ reacted}=\frac{\text{mass of}O_2}{\text{molar mass of}O_2}=\frac{41.6 g}{32 g/mol}=1.3 moles$

According to reaction 1 mole $O_2$ produces 1 mole of $CO_2$ then 1.3 mole of $O_2$ will produce $\frac{1}{1}\times 1.3$ moles of $CO_2$

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=Moles of $CO_2$ × molar mass of $CO_2$ = 1.3 ×44 g/mol =

=57.2 grams

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