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3 years ago

What is the pressure of 0.5 mol of nitrogen gas in a 5 L container at 203 K

Chemistry

1 answer:

Ivan3 years ago

3 0

Answer:

1.67 atm.

Explanation:

We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm (P = ??? atm).

V is the volume of the gas in L (V = 5.0 L).

n is the no. of moles of the gas in mol (n = 0.5 mol).

R is the general gas constant (R = 0.0821 L.atm/mol.K),

T is the temperature of the gas in K (T = 203 K).

∴ P = nRT/V = (0.5 mol)(0.0821 L.atm/mol.K)(203 K)/(5.0 L) = 1.67 atm.

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Explanation:

Rate of a reaction is defined as the speed at which a chemical reaction proceeds. It is often expressed in terms of the concentration of a reactant that is consumed in a unit time or the concentration of a product that is formed in a unit of time.

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3 years ago

Calculate the percent composition by mass of iron in Fe(NO3)3

Dovator [93]

Answer:

It's 23.14 percent

Explanation:

First, the mass of all the elements are:

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In this molecule you have 3 atoms of N, and 9 atoms of O, so:

3•14 = 42

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The whole mass of the molecule is:

56 + 42 + 144 = 242

242/100 = 2.42, so 1% is 2.42

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