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2 years ago

Brass is an example of a(n):

Chemistry

2 answers:

kogti [31]2 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.

pogonyaev2 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 is a homogeneous mixture of copper and zinc in which the concentration of zinc and copper is the same throughout the entire mixture making it a solid solution.

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During a chemical change items are lost or gained to make new substance true or false

Otrada [13]

Answer:

If you meant Atoms then the answer is false

5 0

2 years ago

What is the electronic configuration of Au3+?

Anettt [7]

Answer:

$AU^{3+} : [Rn] 5f^3$

Explanation:

Writing electronic configuration of any element you should know atomic number of that element ,

and also electrons are filling according to their energy level and first electron is filled in the lower energy orbital

and it follows n+1 rule if n+1 is same for two orbital electron will go first in the lowest value of n.

writing electronic configuration of ion can be done like first for their neutral atom and then add or remove electron it will make things easy because there are also some eception case their you may do wrong.

$AU : [Rn] 5f^3 6d^1 7s^2$

remove three electron from outer most shell of AU

$AU^{3+} : [Rn] 5f^3$

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2 years ago

Substances that are readily combustible or may cause fire through friction

Dvinal [7]

Answer :

Flammable substances

Explanation :

Flammable substances will catch fire and continue to burn when they contact an ignition source like a spark or a flame.

For example, methanol is a flammable liquid.

A flammable solid may also catch fire through friction. Matches are flammable solids.

3 0

2 years ago

Which produces wave particles that move and displace one another? A) a radio B) a guitar C) a light bulb D) a microwave oven

Semmy [17]

The answer is B. A guitar generally produces sound waves that propagate when the strings are strummed. The strings are displaced through the vibrations caused by contact of the hand and the guitar. You will also notice the vibrations by looking closely to the string. Wave particles continuously collide with each other to make a sustaining or prolonging sound.

8 0

2 years ago

Read 2 more answers

A 8L sample of gas at 250 K is cooled to 75 K. What is the volume of the gas after it is cooled?

Stells [14]

$by \: Charles'\: law: \: \\ \frac{v_{1}}{t_{1}} = \frac{v_{2}}{t_{2}} \\$

Where v is the volume(in L) and t is the temperature(in °K)

$\frac{8}{250} = \frac{v_{2}}{75} \\\\4/5 =v_2/3 \\\\\boxed{v_{2} = \frac{12}{5}}\\\\\\\huge{=2.5 l}$

7 0

1 year ago