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nekit [7.7K]
3 years ago
11

Brass is an example of a(n):

Chemistry
2 answers:
kogti [31]3 years ago
7 0

Answer:

homogeneous mixture or solid solution

Explanation:

A mixture is said to be a substance containing two or more substances that are not chemically combined together. A mixture can be easily separated to it original components.

Mixture are not chemically bonded together .  An homogeneous mixture is a mixture that is uniformly mixed together . example is air.

An heterogeneous mixture is a mixture is such that the components can be  separated from each other.

Brass is an homogeneous mixture  . Most Alloys of metals are  mixture example are Brass, steel and solder. Brass combines two different metal like zinc and copper to form brass. The mixture can be easily separated to their components elements and are not chemically bonded.  

Brass can also be regarded as a solid solution which involve zinc or other metals(solute) dissolve in a solvent(copper). The best option is a solution.

pogonyaev3 years ago
4 0
I believe the correct answer from the choices listed above is the third option. Brass is an example of a solution. Brass<span> is a homogeneous </span>mixture<span> of copper and zinc in which the concentration of zinc and copper is the same throughout the entire </span>mixture making it a solid solution.
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Which example is an endothermic process
Annette [7]

Answer:

Endothermic reactions is the result of heat being absorbed.

Explanation:

Melting ice cubes. Melting solid salts. Evaporating liquid water. Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes.

(These are all examples of endothermic reactions.)

4 0
2 years ago
1. Take a look at all the elements in period 3. What do you notice? *
Vedmedyk [2.9K]

Answer:

D

Explanation:

beacause all the elements in period 3 has different valence electrons hence you look at the first element in period 3 is sodium which has a valence electron of 1 when you go across the period to the right their valence electron decreases to be negative

5 0
2 years ago
Read 2 more answers
Which is an acceptable Lewis structure for a diatomic nitrogen molecule?
timofeeve [1]
Nitrogen has 5 valence electrons (ve-), so a diatomic nitrogen molecule will have twice as many, 10 valence electrons. Then, just draw electrons in pairs of 2 until you both get ride of all of them (reach 0) and you fill every atom (eight electrons each). It can be drawn either way, the important thing is that there are 3 electron pairs shared between the two atoms.

6 0
3 years ago
Read 2 more answers
Neutral atoms contain equal numbers of A protons and electrons. B protons and neutrons. C electrons and neutrons. D protons, ele
Verdich [7]

<u>Answer:</u>

<u>For 1:</u> The correct answer is Option A.

<u>For 2:</u> The correct answer is Option B.

<u>For 3:</u> The correct answer is Option C.

<u>Explanation:</u>

<u>For 1:</u>

Atomic number is defined as the number of electrons or number of protons that are present in a neutral atom. It is represented as Z.

Z = Atomic number = Number of electrons = Number of protons

Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.

A = Mass number = Number of protons + Number of neutrons

Hence, the correct answer is Option A.

  • <u>For 2:</u>

The isotopic representation of an atom is: _Z^A\textrm{X}

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

We are given:

An isotopic representation of beryllium atom:  _4^9\textrm{Be}

Thus, the number '4' represents the atomic number of beryllium, number '9' represents the mass number of beryllium atom.

Hence, the correct answer is Option B.

  • <u>For 3:</u>

In CO compound:

Mass of oxygen = 16 g

Mass of carbon = 12 g

In CO_2 compound:

Mass of oxygen = 32 g

Mass of carbon = 12 g

Thus, the ratio of mass of oxygen in CO_2 and CO is:

CO_2:CO=32:16=2:1

Hence, the correct answer is Option C.

3 0
3 years ago
How many grams of co2 is produced when oxygen reacts with carbon?
Serggg [28]
44g of CO2 can produce by the reaction of carbon with oxygen
5 0
3 years ago
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