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3 years ago

When energy in the atom is released, what occurs?

Chemistry

1 answer:

sineoko [7]3 years ago

4 0

Answer:

What happens when electrons in atoms absorb or release energy? When electrons absorb or release energy, their electrons can move to higher or lower energy levels. These electrons lose energy by emitting light when they return to lower energy levels.

Explanation:

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At a certain temperature the speeds of six gaseous molecules in a container are 2.0 m/s, 2.2 m/s, 2.6 m/s, 2.7 m/s, 3.3 m/s, and

iren [92.7K]

Answer:

root-mean-sqaure = 2.77 m/s

average = 2.72 m/s

The root-mean-square is always the largest because it takes account of the variance of the spread of the data. The increase is related to the fact that the data varies to sample.

Explanation:

The rootmean-square (R) is the square root of the squares of the valeus divided by the number of the datas.

$R = \sqrt{\frac{x1^2 + x2^2 +...+xn^2}{n} }$

$R = \sqrt{\frac{(2.0)^2 + (2.2)^2 + (2.6)^2 + (2.7)^2 ^(3.3)^2 + (3.5)^2}{6} }$

R = √(46.03)/6

R = 2.77 m/s

The average speed is the sum of the speeds divided by the number of datas:

$A = \frac{2.0 + 2.2 + 2.6 + 2.7 + 3.3 + 3.5}{6}$

A = 16.3/6

A = 2.72 m/s

5 0

3 years ago

Read 2 more answers

What are the magnitude (size) and direction of the cumulative force acting on the car shown in the picture A. 30 N to the right

UNO [17]

Answer: The correct answer is option(A).

Explanation:

Total forces exerting on the car = F

$F_r=50 N$ = Force on car exerting in right direction

$F_l=20 N$ = Force on car exerting in left direction

$F_u=2500 N$ = Force on car exerting in upward direction

$F_d=2500 N$ = Force on car exerting in downward direction

$F=F_r+F_l+F_u+F_d$

$(-F_u)=F_d$ (negative sign shows the direction)

Since, upward force are equal in magnitude but opposite in direction by which they will balance out each other.so, the net force car will be due to two forces $F_r$ and $F_l$

$F=F_r+F_l=50 N+(-20 N)=30 N$ (negative shows the direction)

The magnitude (size) and direction of the cumulative force acting on the car will 30 N towards right direction.Hence, correct answer is option(A).

4 0

3 years ago

Read 2 more answers

Which of the following would become a negative ion before bonding?

Anarel [89]

Isn't it nitrogen AND chlorine? Both are nonmetals, and they need to gain electrons in order to bond.

7 0

3 years ago

Read 2 more answers

I need help identifying the type of reactions. Can anyone help?

Eddi Din [679]

Answer:

Reaction 5: Decomposition reaction.

Reaction 6: Single replacement reaction

Reaction 7: Combination reaction.

Reaction 8: Combustion reaction.

Explanation:

Reaction 5: 2KClO₃ → 2KCl + 3O₂.

It is a decomposition reaction.

A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds.

In this reaction: potassium chlorate decomposes into two single components (potassium chloride and oxygen).
So, it is a decomposition reaction.

Reaction 6: Zn + 2HCl → H₂ + ZnCl₂.

It is a single replacement reaction.

A single-replacement reaction, a single-displacement reaction, is a reaction by which one (or more) element(s) replaces an/other element(s) in a compound.
It is most often occur if element is more reactive than the other, thus giving a more stable product.

In this reaction, zinc metal (more active) displaces the hydrogen to form hydrogen gas and zinc chloride, a salt. Zinc reacts quickly with the acid to form bubbles of hydrogen.

Reaction 7: N₂O₅ + H₂O → 2HNO₃.

It is a combination "synthesis" reaction.
A synthesis reaction has two or more reactants and only one product.
In this reaction, dinitrogen pentoxide reacts with water to produce nitric acid.
So, it is considered as a synthetic "combination" reaction.

Reaction 8: 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O.