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bearhunter [10]
3 years ago
5

A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A chemi

cal bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. double; ionic triple; covalent double; covalent single; covalent single; ionic
Chemistry
2 answers:
Zolol [24]3 years ago
8 0

Answer:

1

Explanation:

Eddi Din [679]3 years ago
6 0

Answer:

Double/  covalent double (the other setence is repeated!)

Explanation:

When an atom donates electrons and other gains electrons, they form ions and the bond is called the ionic bond. When the atoms share electrons between them, they form a molecule, and the bond is called the covalent bond.

The atoms can share one, two or three pairs of electrons in the same bond. If one pair is shared it's called a single bond or a covalent simple; if two pairs are shared it's called a double bond or a covalent double, and if three pairs are shared it's called a triple bond or a covalent triple.

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When the magma cools slowly. You find a deposit of organic limestone.
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The line spectrum of lithium has a red line at 670.8 nm. Calculate the energy of a photon with this wavelength.
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2.96 x10-19 J
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3 years ago
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Certain gases in the atmosphere, like carbon dioxide, nitrous oxide, and methane, absorb heat and prevent it from escaping into
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3 years ago
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A 7.028 gram sample of a sodium sulfate hydrate is heated. After driving off all the water, 3.100 grams of the anhydrous salt is
Nady [450]

Answer:

NaSO_4.10H_2O

Explanation:

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Mass of the hydrated salt = 7.028 g

Mass of the anhydrous salt = 3.100 g

Mass of water eliminated = Mass of the hydrated salt - Mass of the anhydrous salt = 7.028 - 3.100 g = 3.928 g

<u>Moles of water: </u>

Mass of water = 3.928 g

Molar mass of H_2O = 18 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus, moles are:

moles= \frac{3.928\ g}{18\ g/mol}

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<u>Moles of anhydrous salt: </u>

Amount = 3.100 g

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Thus, moles are:

moles= \frac{3.100\ g}{142.04\ g/mol}

moles_{CaSO_4}= 0.02182\ mol

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<u>Hence, the formula for hydrate is:- NaSO_4.10H_2O</u>

7 0
3 years ago
When zn(oh)2(s) was added to 1.00 l of a basic solution, 1.09×10−2 mol of the solid dissolved. what is the concentration of oh−
uysha [10]
The concentration of the basic solution is determined by:

N = (number of moles / volume of solution) 

number of moles = 1.09 x 10^-2 mol
volume of solution = 1 liter
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N = 1.09 x 10^-2 mol/L

The initial concentration of Zn (OH)2 is 0; the basic solution is 1.09x10^-2 M, then the concentration of OH in the final solution is 1.09x10^-2 M



7 0
3 years ago
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