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2 years ago

Covalent bonds form between hydrogen and oxygen atoms in a water molecule as a result of the:________.

Chemistry

1 answer:

Oliga [24]2 years ago

5 0

Answer:

Explanation:

A covalent bond is said to be formed when two electrons are shared between two bonding atoms as in the formation of the water molecule.

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Ratling [72]

A. They speed up chemical reactions

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2 years ago

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andre [41]

Answer:

1. A) Its very dense

2. D) weight depends on gravity and mass is constant

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4. D) 125 cubic cm

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Explanation:

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3 years ago

Which chemical bonds are found within water molecules?

Anni [7]

D. Hydrogen chemical bonds are found within water molecules.

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2 years ago

Using the potential given below, calculate the activity of cl^- in 1M KCl solution.

MissTica

Answer:

Explanation:

E° (calomel electrode) = 0.268 v

E( calomel electrode, 1M KCl) = 0.280 v

For calomel electrode

$E = E^0 _( Hg^+/Hg ) - \frac{.059}{2} \times log( a_{cl^-} )^2$

$.280 = .268 - \frac{.059}{2} \times log( a_{cl^-} )^2$

$.012= - \frac{.059}{2} \times log( a_{cl^-} )^2$

$log( a_{cl^-})^2= - .4067$

$a_{cl^-_}$ = 0.626 .

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3 years ago

9.69×10^25 formula units of iron(III) nitrate is equal to how many moles of Fe(NO3)3?

scoray [572]

Answer:

160.9 mol ≅ 161.0 mol.

Explanation:

It is known that every 1.0 mole of compound or element contains Avogadro's number (6.022 x 10²³) of molecules or atoms (formula units).

Using cross multiplication:

1.0 mole of Fe(NO₃)₃ contains → 6.022 x 10²³ formula units.

??? mole of Fe(NO₃)₃ contains → 9.69 x 10²⁵ formula units.

<em>∴ The no. of moles of He contains (9.69 x 10²⁵ formula units)</em> = (1.0 mol)(9.69 x 10²⁵ formula units.)/(6.022 x 10²³ formula units) = <em>160.9 mol ≅ 161.0 mol.</em>

6 0

3 years ago