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2 years ago

Question 2 of 10

Chemistry

2 answers:

Serjik [45]2 years ago

4 0

A) 02(9)

hope it help you(•‿•)

Jobisdone [24]2 years ago

3 0

Entropy is defined as the degree of disorder of a system.

As the degree of disorder of water is given by

Solid<Liquid<Gas

Entropy is more in gaseous state of water.

Option d is correct

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(25points) Explain in your own words the difference between atomic mass and atomic number. Where can you find this information o

Fiesta28 [93]

Answer:

No time for it Ill help soon qw q

Explanation: And yes you know that 2332423 .

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3 years ago

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The atoms of which element will typically form ions

Musya8 [376]

Ions are electrically charged particles, meaning, that whenever any type of atom loses or gains electrons it is forming a new type of structure, or ion.

Metal atoms form postive ions, Non-Metals form negative ions.

The strongest type of bond that can occur between two ions, when they are oppositely charged, are Ionic Bonds. The most commonly known ionic bond is seen in Sodium and Chlorine, which when combined give us NaCl or Sodium Chlorine, aka Salt.

+1 charge = Group 1, Metals

+2 charge = Group 2, Alkali Metals

-1 charge = Group 17, Halogens

Provided is a periodic table marked with the charges for each group.

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3 years ago

A particular energy level in the hydrogen atom has E = -2.42 x 10-19 J. Use Bohr's model of the energy levels in hydrogen to cal

Zepler [3.9K]

Answer:

n=3

Explanation:

The expression for the energy of an electron for the hydrogen atom in the nth orbit is:-

$E_n=-2.18\times 10^{-18}\times \frac{1}{n^2}\ Joules$

Given that:-

$E_n=-2.42\times 10^{-19}\ Joules$

Applying in the equation to find the value of n as:-

$-2.42\times 10^{-19}=-2.18\times 10^{-18}\times \frac{1}{n^2}$

$n^2=\frac{2.18\times 10^{-18}}{2.42\times 10^{-19}}$

$n=\sqrt{\frac{21.8}{2.42}}=3$

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3 years ago

Which type of energy is represented here? A. Thermal B. Chemical potential C. Mechanical D. Electromagnetic

Snezhnost [94]

<h2>Answer:</h2>

<u>The correct answer is Thermal Energy</u>

<h2>Explanation:</h2>

Thermal energy is the energy that comes from heat. This heat is generated by the movement of tiny particles within an object. The faster these particles move, the more heat is generated. Since the matchstick produces heat energy and heat is referred o thermal energy so it is the correct answer.

4 0

3 years ago

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Operations with units”: Determine the units of the answers to the following problems.

sammy [17]

Answer:

1) km 2) cm^ 3) no units (kg cancels) 4) g/cm^3 5) g 6) g°C

Explanation:

Like units will cancel ((m/km)*(km) = m

Non-cancelled units remain (ml)*(g/ml)*(°C) = g°C

5 0

3 years ago