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Rom4ik [11]
3 years ago
11

Which situation describes the best example of rotational motion?

Chemistry
2 answers:
myrzilka [38]3 years ago
8 0
It’s B I think I took the same test or I had that answer in my test
Delvig [45]3 years ago
6 0

Answer:

I believe that the best example of rotational motion is : B. The wheel spins as long as the hamster keeps running.

Explanation:

Rotational motion refer to a rotation movement, which means the main axis point stays the same.

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Which of the following compounds will not exist as resonance hybrid. Give reason for your answer :
Novosadov [1.4K]

Answer:

CH3OH

Explanation:

As it lacks

\pi

electrons hence it will not exist as resonance hybrid.

8 0
3 years ago
Identify the subatomic structure of an atom.
weqwewe [10]

SUBATOMIC PARTICLES

After reading this section you will be able to do the following:

<span>List the three main subatomic particles of an atom.Discuss the positions of these particles within the atom and what electric charge they carry, if any.</span>

What are atoms made of?

Now that we have talked about how atoms are combined to make other substances, let's talk about the particles that make up the atom. Particles that are smaller than the atom are called subatomic particles. The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus. First, let's learn a bit about protons and neutrons, and then we will talk about electrons a little later.

Protons and Neutrons

Protons and neutrons make up the nucleus of an atom. All protons are identical to each other, and all neutrons are identical to each other. Protons have a positive electrical charge, so they are often represented with the mark of a "+" sign. Neutrons have no electrical charge and are said to help hold the protons together (protons are positively charged particles and should repel each other).

If all protons are identical and all neutrons are identical, then what makes the atoms of two different elements different from each other? For example, what makes a hydrogen atom different from a helium atom? The number of protons and neutrons in the nucleus give the atoms their specific characteristics. In the graphic below you will notice that each of the three elements have different numbers of protons and neutrons. They would also like to have the same number of electrons as they have protons in order to stay electrically balanced.

4 0
3 years ago
all my points! Calculate the change in free energy if 1.12 moles of Nal is dissolved in water at 25.0°C.​
Vaselesa [24]

Answer:

Free energy change is -7.500248 kJ/mol

Explanation:

If we have the enthalpy change and entropy change, we can find the free energy change using the equation,

ΔG = ΔH - TΔS

Temperature in K = 25°C + 273 = 298 K

ΔH for NaI = -7.50 kJ/mol

ΔS for NaI = 74 J/K mol = 0.074 kJ/K mol

Plugin the above values in the equation, we will get,

ΔG  =  -7.5 kJ/mol - 0.074 kJ/K mol / 298 K

    = -7.5 kJ/mol - 0.000248 kJ/mol

  = -7.500248 kJ/mol

7 0
3 years ago
Read 2 more answers
The filling of which orbital is represented by the transition metals in period 4? 3d 3s 2s 2p
pogonyaev
Transition metals are the metal located in the center block of the periodic table. Also, this block represents the D sublevel.

So, the answer is 3d.

Also, keep in mind that the D block starts "one period late". this means that if you are in period 4, the 3d orbital starts. if you are in period 5, that where 4d starts.
3 0
4 years ago
Read 2 more answers
According to the law of conservation of mass, what is the same on both sides of a balanced chemical equation?
Firlakuza [10]

According to the law of conservation of mass, what is the same on both sides of a balanced chemical equation?

A. the volume of the substances

B. the subscripts

C. the total mass of atoms

D. the coefficients

Answer:

A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow.

Explanation:

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. ... Use coefficients of products and reactants to balance the number of atoms of an element on both sides of a chemical equation.

Consider the balanced equation for the combustion of methane.

CH

4

+

2O

2

→

CO

2

+

2H

2

O


All balanced chemical equations must have the same number of each type of atom on both sides of the arrow.


In this equation, we have 1

C

atom, 4

H

atoms, and 4

O

atoms on each side of the arrow.


The number of atoms does not change, so the total mass of all the atoms is the same before and after the reaction. Mass is conserved.


Here is a video that discusses the importance of balancing a chemical equation.

8 0
3 years ago
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