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3 years ago

30 points for this question answer it plz .

Chemistry

1 answer:

kipiarov [429]3 years ago

4 0

Answer:

Low carbon steel is usually used for carburization because of its excellent toughness. For high duty applications alloy steels are also carburized for additional properties of both the case and the core. In alloy steels, the alloying elements remain in the form of various carbide and nitride precipitates.

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A chemist prepares a sample of helium gas at a certain pressure, temperature and volume and then removes all but a fourth of the

Stells [14]

Answer:

e. T₂= 4T₁

Explanation:

Initially, we have a number of moles (n₁) a gas sample at a certain pressure (P), temperature (T₁) and volume (V). We can relate these variables through the ideal gas equation.

P . V = n₁ . R . T₁

where,

R is the ideal gas constant

We can rearrange this equation like:

$T_{1}=\frac{P.V}{n_{1}.R}$

If only one fourth of the initial molecules remain n₂ = 1/4 n₁. The new temperature (T₂) assuming pressure and temperature remain constant is:

$P.V=n_{2}.R.T_{2}=\frac{1}{4} n_{1}.R.T_{2}\\\frac{P.V}{n_{1}.R} =\frac{1}{4} T_{2}\\T_{1}=\frac{1}{4} T_{2}\\T_{2}=4.T_{1}$

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3 years ago

A chemical reaction in which one element replaces another element in a compound can be categorized as a

rewona [7]

They are substitution reactions

hope that helps

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3 years ago

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Acids are defined as proton donors since they release hydrogen ions. <br> a. True <br> b. False

Vladimir [108]

This is true they are defined as protons

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4 years ago

Which arrow represents the change of state described

Mama L [17]

Answer:N

Explanation:

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3 years ago

History of Aluminum

solniwko [45]

Answer:

Aluminium was named after alum, which is called 'alumen' in Latin. This name was given by Humphry Davy, an English chemist, who, in 1808, discovered that aluminium could be produced by electrolytic reduction from alumina (aluminium oxide), but did not manage to prove the theory in practice.

Explanation:

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3 years ago

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