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zhannawk [14.2K]
3 years ago
12

Two or more atoms of different elements covalently bonded together are referred to as __________.

Chemistry
2 answers:
vagabundo [1.1K]3 years ago
6 0
<span>The answer is molecular compound. Their main difference with ionic compounds is that the atoms of the two elements in a molecular compound are covalently bonded while an ionic compound, the different atoms are ionically bonded.  Examples of molecular compound are sulfur dioxide and carbon tetrachloride. Atoms in molecular compounds are held together through sharing of electrons while atoms in ionic compounds are held together by electrostatic forces</span>




likoan [24]3 years ago
4 0
<span>Answer: molecular compound.
</span><span />

<span>Justification:
</span><span />

<span>1) The chemical combination of two or more different elements is called compound. Each compound has a unique composition and specific properties, which make it different from the elements (atoms) of which it is constituted.
</span><span />

<span>2) The chemical union is called chemical bond. The chemical bonds between elements can be matallic bonds, ionic bonds, or covalent bond.
</span>
<span /><span /><span>
3) The metallic and ionic bonds do not lead to proper molecules because the structure is continuos.
</span><span />

<span>4) The covalent bonds lead to units named molecules. Some examples of molecular compounds are; CH4, C2H6, C3H8, C4H10.</span>
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Explanation:

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7 0
3 years ago
How many atoms are there in 7.6 moles of Iron?
Harlamova29_29 [7]

Answer:

45.77 × 10²³ atoms

Explanation:

Given data:

Number of moles of iron = 7.6 mol

Number of atoms = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

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5 0
3 years ago
What would be the composition and ph of an ideal buffer prepared from lactic acid (ch3chohco2h), where the hydrogen atom highlig
Mashutka [201]

Answer:

P_H =2.86

c=1.4\times 10^{-4}

Explanation:

first write the equilibrium equaion ,

C_3H_6O_3  ⇄ C_3H_5O_3^{-}  +H^{+}

assuming degree of dissociation \alpha =1/10;

and initial concentraion of C_3H_6O_3 =c;

At equlibrium ;

concentration of C_3H_6O_3 = c-c\alpha

[C_3H_5O_3^{-}  ]= c\alpha

[H^{+}] = c\alpha

K_a = \frac{c\alpha \times c\alpha}{c-c\alpha}

\alpha is very small so 1-\alpha can be neglected

and equation is;

K_a = {c\alpha \times \alpha}

[H^{+}] = c\alpha = \frac{K_a}{\alpha}

P_H =- log[H^{+} ]

P_H =-logK_a + log\alpha

K_a =1.38\times10^{-4}

\alpha = \frac{1}{10}

P_H= 3.86-1

P_H =2.86

composiion ;

c=\frac{1}{\alpha} \times [H^{+}]

[H^{+}] =antilog(-P_H)

[H^{+} ] =0.0014

c=0.0014\times \frac{1}{10}

c=1.4\times 10^{-4}

6 0
4 years ago
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