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Finger [1]
3 years ago
11

For the skeletal chemical equation BF3(g) + NaH(s) → B2H6(g) + NaF(s) what is the coefficient of B2H6 in the balanced equation?

(Balance the equation with the smallest possible whole number coefficients.)
Chemistry
2 answers:
KonstantinChe [14]3 years ago
6 0

Answer:

Coefficient in front of the B_2H_6  in the balanced equation - 1

Explanation:

The unbalanced Chemical equation is shown below as:-

BF_3+NaH\rightarrow B_2H_6+NaF

On the left hand side,  

There are 1 boron atom and 3 fluorine atoms and 1 sodium and hydrogen atoms.

On the right hand side,  

There are 2 boron atoms and 6 hydrogen atoms and 1 sodium and fluorine atoms.

Thus,  

leftside, BF_3 must be multiplied by 2 to balance boron and right side, NaF must be multiplied by 6 to balance fluorine. Left side, NaH must be multiplied by 6 to balance sodium and hydrogen atoms.

Thus, the balanced reaction is:-

2BF_3+6NaH\rightarrow B_2H_6+6NaF

<u>Coefficient in front of the B_2H_6  in the balanced equation - 1</u>

Gemiola [76]3 years ago
4 0

Answer:

Coefficient of B_2H_6 in the balanced equation is 1.

Explanation:

Chemical equation given is:

BF_3+NaH-->B_2H_6+NaF

Clearly the equation is not balanced.

Step 1:

There are six hydrogens in the RHS.Hence we make number of hydrogens as 6 in LHS by writing 6NaH.

Step 2:

Now the number of Na in LHS becomes 6.To balance it,we write 6NaF in the RHS.

Step 3:

Now there are only 3 flourines in LHS.So we write 2BF3 to make the number of flourine atoms 6.

Final balanced equation:

2BF_3+6NaH-->B_2H_6+6NaF

Coefficient of B2H6 is 1.

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professor190 [17]
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These statements describe three different reactions.
Naily [24]

An atom gains an electron from another atom. Hence, option B is the correct answer.

<h3>What is an atom?</h3>

An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons.

When an atom shares electrons with another atom then it results in the formation of a covalent bond.

Whereas when an atom transfer electrons from one atom to another then it results in the formation of an ionic bond.

When the nucleus of an atom splits then it represents a nuclear fission reaction and energy is released during this process.

Hence, option B is the correct answer.

Learn more about the atom here:

brainly.com/question/1566330

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5 0
2 years ago
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Damm [24]

Answer:

The structure that is located between the auricle and the eardrum is the ear canal.

Explanation:

The ear canal, or external ear canal, is a a tubular hole about 30 mm long that runs from the auricle to the eardrum, forming part of the external ear.

Its function is to conduct sound, in the form of vibrations, from the outside to the eardrum. It also has the function of producing a viscous secretion called cerumen, capable of trapping dust particles and small foreign bodies.

Other options are not correct because:

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3 0
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algol [13]

Answer:

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By definition, <em>half neutralization</em> is the point at which half of the acid has been neutralized.

The neutralization reaction that you are studying is the acid-base reaction:

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Then, since the starting molarity of the acid (HCl) is 0.2 M, you just need to find half of that concentration:

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So, the answer is the first choice: a. 0.1 M.

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I think it’s B 5.54 x 10^2g
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