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noname [10]
2 years ago
8

What is metallurgy?​

Chemistry
1 answer:
xz_007 [3.2K]2 years ago
8 0

Metallurgy is the science and technology of metals and alloys. The study of metallurgy can be divided into three general groups: ... Process metallurgy is concerned with the extraction of metals from their ores and the refining of metals.

You might be interested in
Which of the following is not an example of a chemical change?
tensa zangetsu [6.8K]
The correct answer is cutting paper because it is an example of a physical change. A physical change is a change a change in the properties of matter that does not change the identity of the substance. On the other hand, chemical change is a change where the substance changes in identity after undergoing a process..
4 0
3 years ago
a 5.00 L sample of helium expands to 12.0 L at which point the pressure is measured to be 0.720atm. what was the original pressu
stepan [7]

Answer:

The answer to your question is  Pressure 1 = 1.73 atm

Explanation:

Data

Volume 1 = 5 l

Pressure 1 = ?

Volume 2 = 12 l

Pressure 2 = 0.72 atm

Process

To solve this problem use Boyle's law to solve this problem

                 Pressure 1 x Volume 1 = Pressure 2 x Volume 2

-Solve for Pressure 1

                 Pressure 1 = Pressure 2 x Volume 2 / Volume 1

-Substitutiion

                 Pressure 1 = 0.72 x 12 / 5

-Simplification

                Pressure 1 = 8.64/5

-Result

                 Pressure 1 = 1.73 atm

5 0
3 years ago
Concept of mole chemistry question<br><br><br><br>​
vredina [299]

Answer:

How many molecules of water are there in 54 g of H2O H 2 O ? Solution. Molar Mass of H2O H 2 O = 2 + 16 = 18 g/moles. So ,number of moles of H2O H 2 O = Mass/Molar Mass = 54/18 =3 moles. Now 1 moles = 6.022×1023 6.022 × 10 23 molecule.

5 0
2 years ago
\identify which reaction is likely to have the greatest positive enthalpy change. p(g) 5cl(g)→pcl5(g) p(g) 3cl(g)→pcl3(g) pcl3(g
Yanka [14]

The greatest positive enthalpy change has PCl₅(g) → P(g) + 5Cl(g)

An enthalpy change is difference between the enthalpy after the chemical reaction has completed.

An enthalpy change of phosphorus(V) chloride (PCl₅) molecule is energy needed for breaking up one molecule of phosphorus(V) chloride into one phosphorus and five chlorine atoms.

In a chemical reaction, chemical bonds are forming and breaking and this cause the transformation of one group of chemical substances to another.

Energy is needed to break chemical bonds in molecules (positive enthalpy change), while during formation of molecule, energy is released (negative enthalpy change)

The stronger are the bonds, more energy is needed and enthalpy change is more positive.

PCl₅ has more bonds to break than PCl₃.

More about enthalpy change: brainly.com/question/16387742

#SPJ4

5 0
2 years ago
Consider the reaction below.
Nataly_w [17]
2 Al₂O₃ = 4 Al + 3 O₂

4 moles Al ----------> 3 moles O₂
11.0 moles Al -------> ?

O₂ = 11.0 * 3 / 4

= 8.25 moles of O₂

hope this helps you and have a great day!
8 0
3 years ago
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