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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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Can a physical change actually change what a substance is?

zlopas [31]

No in that case it would be a chemical change

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3 years ago

Is plastic is substance, homogenous or heterogineous mixture

yarga [219]

Answer:

Plastic is compound not the substance because substance is consist of mixture . It may be homogeneous due to plastic beads in molten state are in equal ratio

Explanation:

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3 years ago

Which particle has 2 neutrons

alexandr402 [8]

Answer: Alpha Particle

Explanation:

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3 years ago

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A gas at 300 k and 4.0 atm is moved to a new location with a temperature of 250 k. the volume changes from 5.5 l to 2.0 l. what

ella [17]

Answer:

9.17 atm

Explanation:

To find the new pressure of the gas, you need to use the following manipulated formula:

P₁V₁ / T₁ = P₂V₂ / T₂

In this formula,

P₁ = initial pressure (atm) P₂ = new pressure (atm)

V₁ = initial volume (L) V₂ = new volume (L)

T₁ = initial temperature (K) T₂ = new temperature (K)

Because you have been given values for all of the variables except for the new pressure, you can substitute them into the equation and simplify.

P₁ = 4.0 atm P₂ = ? atm

V₁ = 5.5 L V₂ = 2.0 L

T₁ = 300 K T₂ = 250 K

P₁V₁ / T₁ = P₂V₂ / T₂ <----- Given formula

(4.0 atm)(5.5 L) / (300 K) = P₂(2.0 L) / (250 K) <----- Insert variables

0.073333 = P₂(2.0 L) / (250 K) <----- Simplify left side

18.33333 = P₂(2.0 L) <----- Multiply both sides by 250

9.17 = P₂ <----- Divide both sides by 2.0

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2 years ago

Read 2 more answers

At the Henry's Law constant for carbon dioxide gas in water is . Calculate the mass in grams of gas that can be dissolved in of

Dvinal [7]

The question is incomplete, here is the complete question:

At 25°C Henry's Law constant for carbon dioxide gas in water is 0.031 M/atm . Calculate the mass in grams of gas that can be dissolved in 425. mL of water at 25°C and at a partial pressure of 2.92 atm. Round your answer to 2 significant digits.

<u>Answer:</u> The mass of carbon dioxide that can be dissolved is 1.7 grams

<u>Explanation:</u>

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{CO_2}=K_H\times p_{CO_2}$