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kirill [66]
4 years ago
13

A large weather balloon requires plenty of helium gas in order to ascend into the atmosphere to take measurements. If the balloo

n has a volume of 100,000 liters, about how many moles of helium gas would be required to fill the balloon to a pressure of 1 atm and a temperature of 27 degrees C?
Chemistry
2 answers:
timama [110]4 years ago
8 0
To be able to calculate the number of moles for this problem, for simplicity, we assume that it is an ideal gas. We use the equation PV = nRT. We do as follows:

PV = nRT
n = PV / RT
n = 1(100000) / 0.08206 (27 + 273.15)
n = 4060.04 mol
Rasek [7]4 years ago
4 0

It is 4063 moles of Helium Gas at 1 atm and 27 degrees Celsius.

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If the equilibrium constant of the reaction is 0.85, then which statement is true if the mass of A is 10.5 grams; the density of
snow_tiger [21]

Answer:

E. Q < K and reaction shifts right

Explanation:

Step 1: Write the balanced equation

A(s) + 3 B(l) ⇄ 2(aq) + D(aq)

Step 2: Calculate the reaction quotient (Q)

The reaction quotient, as the equilibrium constant (K), only includes aqueous and gaseous species.

Q = [C]² × [D]

Q = 0.64² × 0.38

Q = 0.15

Step 3: Compare Q with K and determine in which direction will shift the reaction

Since Q < K, the reaction will shift to the right to attain the equilibrium.

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3 years ago
How many moles of N 2 make 1.76 moles of NH 3 ? do you need to. Please help me!
katrin [286]
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3 0
3 years ago
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3 years ago
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iris [78.8K]

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7 0
4 years ago
Suppose you conducted a similar experiment using helium gas. Given that helium is much lighter than the gases used in this lab,
Anuta_ua [19.1K]

This is an incomplete question, here is a complete question.

Suppose you conducted a similar experiment using helium gas. Given that helium is much lighter than the gases used in this lab, you would expect the relationship between the volume of helium and the pressure to be

A. periodic, because helium is lighter.

B. inversely proportional, just like propane and butane.

C. exponential, because helium is lighter.

D. directly proportional, just like propane and butane.

Answer : The correct option is, (B) inversely proportional, just like propane and butane.

Explanation :

Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

P\propto \frac{1}{V}

That means, there is a inverse relation between volume of pressure.

From the given options we conclude that the correct statement is, inversely proportional, just like propane and butane.

Hence, the relationship between the volume of helium and the pressure to be inversely proportional, just like propane and butane.

8 0
3 years ago
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