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Aleksandr [31]
3 years ago
15

Which element combination(s) would result in electrons being shared?

Chemistry
2 answers:
Likurg_2 [28]3 years ago
5 0
Correct option is c) oxygen and hydrogen.... like in <u><em>H2O .. </em></u><em> </em> there is covalent bond due to sharing of electrons ...<em />
Olin [163]3 years ago
5 0

Explanation:

Atoms that share electrons with each other tend to form a covalent bond. Whereas atoms that show transfer of electrons from one atom to another tend to form an ionic bond.

Sodium has atomic number 11 and oxygen has atomic number 8. In order to become stabilized, sodium needs to lose one electron whereas oxygen needs to gain two electrons. So, two sodium atoms will combine with one atom of oxygen. This will form an ionic bond between sodium and oxygen atom.

Carbon has atomic number 4 and fluorine has atomic number 9. Therefore, both of them will share electrons in order to become stabilized. Thus, they will form a covalent bond.

Oxygen atom has atomic number 8 and hydrogen has atomic number 1. Therefore, both of them will share electrons but due to difference in electronegativity of both hydrogen and oxygen they will result in the formation of a polar covalent bond.

Aluminium has atomic number 13 and chlorine has atomic number 17. So, aluminium will donate or transfer its valence electron to chlorine atom. Therefore, it will also form an ionic bond.

Thus, we can conclude that carbon (C) and fluorine (F) and oxygen (O) and hydrogen (H) are the combination(s) that would result in sharing of electrons.

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What happens when you mix two different items (gases or liquids) together when they have different densities?
daser333 [38]

Answer:

Density measures how heavy something is for its size. Liquids of different densities can not be mixed and will separate with the heavier densities at the bottom and the lighter densities at the top. The different objects float at different levels in the liquid depending on their densities.

8 0
3 years ago
How much heat is required to melt 26.0 g of ice at its melting point?
MAXImum [283]

Answer:

Heat required to melt 26.0 g of ice at its melting point is 8.66 kJ.

Explanation:

Number of moles of water in 26 g of water: 26× \frac{1}{18.02} moles

                                                                      =1.44 moles

The enthalpy change for melting ice is called the entlaphy of fusion. Its value is 6.02 kj/mol.

we have relation as:

                                           q = n × ΔH

where:

q  = heat

n  = moles

Δ H  = enthalpy

So calculating we get,

                                        q= 1.44*6.02 kJ

                                        q= 8.66 kJ

We require 8.66 kJ of energy to melt 26g of ice.

                       

8 0
3 years ago
What fraction of atoms in morphine is accounted for by carbon?
Yuki888 [10]
To determine the fraction of carbon in morphine, we need to know the chemical formula of morphine. From my readings, the chemical formula would be  <span>C17H19NO<span>3. We assume we have 1 g of this substance. Using the molar mass, we can calculate for the moles of morphine. Then, from the formula we relate the amount of carbon in every mole of morphine. Lastly, we multiply the molar mass of carbon to obtain the mass of carbon. We calculate as follows:

1 g </span></span> <span>C17H19NO<span>3 ( 1 mol / 285.34 g ) ( 17 mol C / 1 mol </span></span> <span>C17H19NO3</span>) ( 12.01 g C / 1 mol C) = 0.7155 g C

Fraction of carbon = 0.7155 g C / 1 g  <span>C17H19NO<span>3 = 0.7155</span></span>
8 0
3 years ago
Read 2 more answers
What are the differences between cholesterol and ergosterole?​
Marat540 [252]
The difference between ergosterol and cholesterol is much more obvious in their interactions with POPC and DOPC. Whereas cholesterol induces a strong condensing effect that thickens both POPC and DOPC bilayers, ergosterol shows no condensing effect in POPC and DOPC at all.
5 0
3 years ago
Calculate the energy in joules and calories required to heat 25.0 g of water from 12.5C to 25.7C
Alex Ar [27]
The heat (Q) required to raise the temp of a substance is:<span>Q=m∗Cp∗ΔT</span><span> where m is the mass of the object (25.0g in this case), Cp is the specific heat capacity of the substance (for water Cp = 1.00cal/gC, or 4.18J/gC,
and Dt is the change in temp.
You'll have to solve this twice, once with the Cp in calories, and once with the Cp in joules.
</span><span>1380.72 Joules</span>
8 0
3 years ago
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