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aliina [53]
3 years ago
12

How many electrons are in the element

Chemistry
1 answer:
Aliun [14]3 years ago
8 0

Answer:

Number of electrons differ from one elements to other elements .means that each elements have different numbers of electrons

for ex Hydrogen has only one electron whereas helium has 2 electrons

Number of electrons = Atomic number

Atomic number of an element tells the no. of electrons in it.

For ex

Hydrogen ( atomic no. 1 ) ---- 1 electron

helium ( atomic no 2 ) ---- 2 electron

Lithium (atomic no.3 ) ---- 3 electron

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Under certain conditions, the substance calcium carbonate can be broken down to form calcium oxide and carbon dioxide. If 31.7 g
klio [65]

Answer:

13.93\ \text{g}

Explanation:

Molecular weight of CaCO_3 = 100.0869 g/mol

Mass of CaCO_3 = 31.7 g

Moles of CaCO_3 = \dfrac{31.7}{100.0869}=0.3167\ \text{mol}

Moles of both CaO and CO_2 is 0.3167\ \text{mol}

Molecular weight of CO_2 = 44 g/mol

Mass of CO_2 = 44\times 0.3167=13.93\ \text{g}

The mass of carbon dioxide formed simultaneously is 13.93\ \text{g}.

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3 years ago
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iogann1982 [59]

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Nimfa-mama [501]
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3 years ago
draw the lewis structure for co with an arrow representing the dipole moment. refer to figure 10.10 to estimate the percent ioni
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Answer:

Explanation:

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