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Inga [223]
3 years ago
11

What is the symbol for copper

Chemistry
2 answers:
bekas [8.4K]3 years ago
7 0
The symbol for copper is CU, which means copper cuprum, the Latin word for copper.
Juli2301 [7.4K]3 years ago
4 0
Cu is the symbol and you just add 35 plus 29 to find the atomic mass and 29 is the atomic number because the atomic number is the same as the protons.
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Ethane, C2H6, can be formed by reacting acetylene, C2H2, with hydrogen gas as follows: C2H2(g) H2(g) ⇌ C2H6(g) Exothermic What c
Pavel [41]

Answer:

Equilibrium shifts to the right

Explanation:

An exothermic reaction is one in which temperature is released to the environment. Hence, if the reaction vessel housing an exothermic reaction is touched after reaction completion, we will notice that the reaction vessel e.g beaker is hot.

To consider the equilibrium response to temperature changes, we need to consider if the reaction is exothermic or endothermic. In the case of this particular question, it has been established that the reaction is exothermic.

Heat is released to the surroundings as the reactants are at a higher energy level compared to the products. Hence, increasing the temperature will favor the formation of more reactants and as such, the equilibrium position will shift to the left to pave way for the formation of more reactants. Thus , more acetylene and hydrogen would be yielded

8 0
3 years ago
Compare and contrast physical and chemical changes. Give an example of both a physical and chemical change.
kakasveta [241]

Answer:

Physical change is the change that you can see like for example if you turn your light on and off thats physical (thats the best definition for that i can do) and also physical change can go back to its original form it was before. A chemical change is when you do something to something and it cannot be changed back to its original form. Like for example, if you bake a pie, you cannot un-cook all the ingredients to make it raw again

Explanation:

learned this in 5th grade

5 0
3 years ago
One of the pieces of evidence supporting energy quantization was the line spectra of elements. Why does this demonstrate energy
bezimeni [28]

Answer:

c) There are sharp emission lines demonstrating discrete energy levels.

Explanation:

When an element emits energy in the form of radiation, it produces a spectrum of colors on a photographic plate. This spectrum can either be continuous or discrete. In continuous spectrum the spectrum continues without any discrimination between two regions. This represents the continuous emission of radiation, and thus the continuous emission of energy without any break.

On the other hand, the line spectrum consists of discrete and sharp lines, which shows the emission of radiation in a certain amount in a certain time, with a break between emission. Hence, the line spectra supports the quantization of energy.

The correct option is:

<u>c) There are sharp emission lines demonstrating discrete energy levels.</u>

8 0
4 years ago
Valence electrons (electrons in the outermost shell – available for bonding)
Anastaziya [24]
Electrons and newtrons is that what ur asking for
8 0
3 years ago
You have been asked to organize the following aqueous solutions: HCl, NaOH, H2SO4,Ca(OH)2, LiOH, and HCIO3.How would you group t
frutty [35]

Answer & Explanation:

You could group them as acids and bases:

<u>Acids</u>

HCl

H₂SO₄

HClO₃

<u>Bases</u>

NaOH

Ca(OH)₂

LiOH

7 0
3 years ago
Read 2 more answers
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