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4 years ago

How many moles of nitrogen we have at a temperature of 30 ?C, a pressure of 4.0 atm, and a volume of 4000.ML?

Chemistry

1 answer:

marishachu [46]4 years ago

3 0

Answer:

0.643 mol.

Explanation:

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

where, P is the pressure of the gas in atm (P = 4.0 atm).

V is the volume of the gas in L (V = 4000 mL = 4.0 L).

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

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

T is the temperature of the gas in K (T = 30ºC + 273 = 303 K).

∴ n = PV/RT = (4.0 atm)(4.0 L)/(0.0821 L.atm/mol.K)(303 K) = 0.643 mol.

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Give example of a compound

MrMuchimi

Answer:

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3 years ago

What product of the krebs cycle is considered a waste product of the reaction?

Rufina [12.5K]

The answer is carbon dioxide

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3 years ago

Make the equation equal Fe(NO3)3+KSCN —> Fe(SCN)3 + K(NO3)3

Advocard [28]

Answer:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

Explanation:

Chemical equation:

Fe(NO₃)₃ + KSCN → Fe(SCN)₃ + KNO₃

Balanced Chemical equation:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

Type of reaction:

It is double displacement reaction.

In this reaction the anion or cation of both reactants exchange with each other. In given reaction the cation Fe⁺³ exchange with cation K⁺.

The given reaction equation is balanced so there are equal number of atoms of each elements are present on both side of equation and completely hold the law of conservation of mass.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

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3 years ago

Name 5 descriptions of a key including mass

ad-work [718]

Answer:

I'm assuming you're talking about something like a regular housekey, in which case there are numerous things you can describe!

Its mass: how much it weighs, times the gravity of the system.

Its color: is it silver-colored, or gold, etc.?

Its volume: you could probably calculate this, though it would be hard because it's not a traditional shape, I assume.

Its density: this is mass/volume. It means how many of the atoms are in a given space; how tightly packed the atoms are.

Its tendency to rust / its specific combination of metals or alloys: is it made of copper, tin, steel.. and these are all things that can rust to varying degrees.

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4 years ago

In 100 mL of cold water, 35 g of NaCl will dissolve, but 70 g will not. This observation implies that

vovikov84 [41]

The observation implies that the solubility of a solution depends on both the amount of solute and the volume of solvent.

<h3>Solubility</h3>

The solubility of a substance is the property of that substance to dissolve in a solvent.

The solubility of a solution is the ability of the solution to dissolve solutes.

Solubility depends on the quantity of solutes and solvents.

Thus, 100 mL water may be able to dissolve 35 g NaCl but not 70 g because the maximum solubility of the water is breached. In order to dissolve more NaCl, the volume of the water might need to be increased.

More on solubility can be found here: brainly.com/question/22185953

4 0

3 years ago