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3 years ago

What volume does 0.482 mol of gas occupy at a pressure of 719 mmHg at 56 ∘C?

Chemistry

1 answer:

kozerog [31]3 years ago

7 0

Answer:

The volume is 13, 69 L

Explanation:

We use the formula PV=nRT. We convert the temperature in Celsius into Kelvin and the pressure in mmHg into atm.

0°C= 273K---> 56°C= 56 + 273= 329K

760 mmHg----1 atm

719 mmHg----x= (719 mmHgx 1 atm)/760 mmHg= 0,95 atm

PV=nRT ---> V= (nRT)/P

V=( 0,482 molx 0,082 l atm/K mol x 329K)/0,95 atm

V=13,68778526 L

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3 years ago

how many moles of water are in 1.23 x 10^18 water molecules? I need the answer in scientific notation ?

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3 years ago

If one pound is the same as 454 grams, then convert the mass of 78 grams to pounds.

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3 years ago

What would be the change in pressure in a sealed 10.0 l vessel due to the formation of n2 gas when the ammonium nitrite in 2.40

larisa86 [58]

The change in pressure in a sealed 10.0L vessel is 5.28 atm

calculation

The pressure is calculated using the ideal gas equation

That is P=n RT

where;

P (pressure)= ?

v( volume) = 10.0 L

n( number of moles) which is calculated as below

write the equation for decomposition of NH₄NO₂

NH₄NO₂ → N₂ +2H₂O

Find the moles of NH₄NO₂

moles = molarity x volume in liters

= 2.40 l x 0.900 M =2.16 moles

Use the mole ratio to determine the moles of N₂

that is from equation above NH₄NO₂:N₂ is 1:1 therefore the moles of N₂ is also =2.16 moles

R(gas constant) =0.0821 l.atm/mol.K

T(temperature) = 25° c into kelvin = 25 +273 =298 K

make p the subject of the formula by diving both side by V

P = nRT/V

p ={ (2.16 moles x 0.0821 L.atm/mol.K x 298 K) /10.0 L} = 5.28 atm.

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3 years ago

Read 2 more answers

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The phase development of the eutectic reaction includes the equilibrium point of Liquid, crystals of A, and crystals of B

<h3>What is the Eutectic Reaction?</h3>

This refers to the three-phase reaction that occurs when a liquid forms after cooling.

Hence, we can see that the hypo eutectic reaction occurs when there is a homogenous mixture of substances that undergoes a reaction where it melts and solidifies.

The hyper eutectic reaction has to do with the metallic alloy that contains a composition that has exceeded its eutectic point.

Read more about eutectic reactions here:

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2 years ago