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Stells [14]
3 years ago
8

A bond created from the sharing of electrons between two atoms is a(an) ______ bond.

Chemistry
1 answer:
lora16 [44]3 years ago
5 0
Covalent example ch4 where carbon is covalently bonded with all 4 hydrogens
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3

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Which type of nuclear radiation is being emitted here?
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b.Beta

Explanation:

mass number remains constant while atomic number has been increased by 1 unit . beta is electron like element where its mass number is 0 and atomic number is -1.

7 0
3 years ago
Ionic bonding occurs when ______ atom donates one or more _______ to a _______ atom
Svetllana [295]

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ionic bonding occurs when unstable atoms donates one or more valence electrons to a unstable atom

Explanation:

7 0
2 years ago
Hydrogen iodide, HI, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. If 20.0 g of
Kaylis [27]

Answer: D. 19.9 g hydrogen remains.

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of H_2

\text{Number of moles}=\frac{20.0g}{2g/mol}=10.0moles

b) moles of I_2

\text{Number of moles}=\frac{20.0g}{254g/mol}=0.0787moles

H_2(g)+I_2(g)\rightarrow 2HI(g)

According to stoichiometry :

1 mole of I_2 require 1 mole of H_2

Thus 0.0787 moles of l_2 require=\frac{1}{1}\times 0.0787=0.0787moles of H_2

Thus l_2 is the limiting reagent as it limits the formation of product and H_2 acts as the excess reagent. (10.0-0.0787)= 9.92 moles of H_2are left unreacted.

Mass of H_2=moles\times {\text {Molar mass}}=9.92moles\times 2.01g/mol=19.9g

Thus 19.9 g of H_2 remains unreacted.

5 0
2 years ago
What is the difrense between soft water and hard water?
Nutka1998 [239]
Hard water<span>... is </span>water<span> that contains an appreciable quantity of dissolved minerals (like calcium and magnesium). </span>Soft water<span>... is treated </span>water<span> in which the only ion is sodium. As rainwater falls, it is naturally </span>soft<span>. </span>
6 0
3 years ago
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