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Natasha2012 [34]
2 years ago
9

Copper can be shaped into wires because it is

Chemistry
1 answer:
Lelechka [254]2 years ago
7 0

.ANSWER:Copper is a ductile metal

EXPLAIN :This means that it can easily be shaped into pipes and drawn into wires. Copper pipes are lightweight because they can have thin walls. They don't corrode and they can be bent to fit around corners.

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Which of the following is NOT true about the exothermic reaction?
Natasha2012 [34]

The statement that is not true about the exothermic reaction is that the potential energy of the product is higher than the potential energy of the reactant. That is option D.

<h3>What is an exothermic reaction?</h3>

An exothermic reaction is the reaction that releases heat to the environment which causes increase in the immediate environment.

The characteristics of exothermic reaction include the following:

  • Activation energy of the forward reaction is smaller than the activation energy of the reverse reaction.

  • Heat is released to the environment during reaction.

Since there is release of heat, the product will have a lower energy than the reactant.

Therefore, the statement that is not true about the exothermic reaction is that the potential energy of the product is higher than the potential energy of the reactant.

Learn more about exothermic reaction here:

brainly.com/question/2924714

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7 0
2 years ago
Jeffrey is making a model of tungsten for his chemistry class. He has foam balls for the protons, neutrons, and electrons. He ha
mrs_skeptik [129]

Atomic number (Z) of tungsten is 74

Mass number (A) of tungsten is 184

Now:

Atomic number of an element = Number of protons = Number of electrons

Mass number = Number of Protons + Number of neutrons

In the case of tungsten

Total Number of electrons = 74

Jeffrey has already added 21 electrons

Number of electrons needed = 74 - 21 = 53

Ans (D) 53 more electrons are needed to complete the neutral atom of tungsten.

8 0
2 years ago
8. Write a balanced chemical equation showing how you could prepare each of the following salts from an
polet [3.4K]

Answer:

according to my reading

use own words

Explanation:

Salts are combinations of acids and bases. The cation comes from a base and the anion from an acid. Therefore, to make KNO3 we react KOH and HNO3. See how that is done? We write K and add OH to make KOH. We take NO3 and add H to make HNO3.

6 0
2 years ago
Plz tell me if I'm correct I am terrible at science if I'm not correct me plz correct me!!! I promise I'll give brainliest!!! Oh
adell [148]

Answer:

You are mostly correcet but im pretty sure that the nonmetals are brittle because they can break easily

Explanation:

5 0
3 years ago
How to determine how many valence electrons an element has?
In-s [12.5K]
Usually (ignoring transition metals, as they kinda get trickier), the element's valency can be found out by its group (column) number. Usually, we ignore the transition metal block while counting these columns, so Aluminium is in group 3, for example. Since Aluminium is in group 3, it has 3 valence electrons.
8 0
3 years ago
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