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Talja [164]
2 years ago
11

The Statue of Liberty is composed of copper. The smallest particle of any amount of copper is A) an atom. B) an element. C) a co

mpound. Eliminate D) a molecule.
Chemistry
1 answer:
Lina20 [59]2 years ago
5 0

an atom because its the smallest thing in the entire world and in all orgnaisms

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When the forward and reverse paths of a change occur at the same rate,
Zarrin [17]
The correct answer is option B. When the forward and reverse paths of a change occur at the same rate, <span>the system is in equilibrium specifically in dynamic equilibrium.</span> Dynamic equilibrium is the balance in a process that is continuing. It is achieved in a reaction when the forward rate of reaction and the backward rate of reaction is at the same value or equal.

8 0
3 years ago
Read 2 more answers
Chris the chemist was working in the and he wanted to sou what would happen he put copper chloride into a Bunsen flameAs soon as
Reptile [31]

The question is incomplete, the complete question is;

Chris the Chemist was working in the lab, and he wanted to see what would happen if he put copper chloride into a Bunsen burner flame. As soon as he put it in the flame, it began to emit a green color. Which of these BEST describes this outcome?

A) The heat split the nucleus and created a new element.

B) As the copper chloride was heated, electrons were turned into neutrons.

C) As the electrons moved to a higher energy level, a photon of light is emitted.

D) When excited electrons return back to the ground state, a photon of light is emitted.

Answer:

D) When excited electrons return back to the ground state, a photon of light is emitted.

Explanation:

According to Bohr's model of the atom, electrons may absorb energy and move up to higher energy levels.

These electrons quickly return to ground state from such higher energy excited states thereby emitting the excess energy absorbed during excitation.

If the higher energy level is E2 and the ground state is E1 then the energy of the photon emitted when the electron descends from energy level E2 to E1 is;

ΔE = E2 - E1

This photon emitted accounts for the green colour of the copper salt observed when it was heated.

4 0
3 years ago
Ammonia, NH3, can be made by reacting nitrogen and hydrogen and the equation is N2 + 3H2 --&gt; 2NH3 How many moles of NH3 can b
tino4ka555 [31]
8.66 or 8.67 if u round it off....
5 0
3 years ago
What is the mass number of an ion with 107 electrons, 158 neutrons, and a 1 charge?
vredina [299]
No of protons=107+1=108
No. Of neutrons=158
Mass no. =166
6 0
3 years ago
Suppose that the average speed (vrms) of carbon dioxide molecules (molar mass 44.0 g/mol) in a flame is found to be 1.90 105 m/s
alina1380 [7]
To determine the temperature of the gas, we need an expression which would relate the average speed of the molecules of the gas and the temperature. From my readings, it is said that the average kinetic energy ( energy of an object in motion) of the molecules of a gas is directly related to the temperature of the gas system. Since velocity or speed is directly related to kinetic  energy, it should be that temperature is directly related to the average speed. The expression would be:

<span>v^2 = 3RT/M 
</span>(1.90x10^5)^2 = [3(8.314)T] / [44.0(1/1000)]
T = 63683746.3 K

The temperature would be 
63683746.3 K.
5 0
3 years ago
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