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Dmitriy789 [7]
3 years ago
10

DO NOT TROLL AND ANSWER WITHOUT THE CORRECT ANSWER! I EXPECT THE CORRECT ANSWER NOT A TROLL SO IF YOU DONT HAVE THE ANSWER DO NO

T WRITE ANYTHING. IF YOU TROLL I WILL REPORT YOU
A weather balloon with a volume of 3.40774 L

is released from Earth’s surface at sea level.

What volume will the balloon occupy at an

altitude of 20.0 km, where the air pressure is

10 kPa?

Answer in units of L.
Chemistry
1 answer:
alexandr402 [8]3 years ago
4 0

Answer:  The volume occupied at an altitude of 20.0 km is 34.5289 L

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

P\propto \frac{1}{V}     (At constant temperature and number of moles)

where,

P_1 = initial pressure of gas = 101.325 kPa ( sea level)

P_2 = final pressure of gas = 10 kPa

V_1 = initial volume of gas = 3.40774 L

V_2 = final volume of gas = ?

Now put all the given values in the above equation, we get the final pressure of gas.

101.325\times 3.40774=10\times V_2

V_2=34.5289L

Therefore, the volume occupied at an altitude of 20.0 km is 34.5289 L

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The decomposition reaction 2 NOCl → 2 NO + Cl_2 has a rate law that is second order with respect to ​[NOCl], where k = 3.2 M^{-1
SashulF [63]

Answer:

It will take 3.3 s for [NOCl] to decrease to 0.042 M.

Explanation:

Integrated rate law for this second order reaction-

                                  \frac{1}{[NOCl]}=kt+\frac{1}{[NOCl]_{0}}

where, [NOCl] is concentration of NOCl after "t" time, [NOCl]_{0} is initial concentration of NOCl and k is rate constant.

Here, [NOCl]_{0} = 0.076 M, k = 3.2 M^{-1}s^{-1} and [NOCl] = 0.042 M

So, \frac{1}{0.042M}=[3.2M^{-1}s^{-1}\times t]+\frac{1}{0.076M}

or, t = 3.3 s

So, it will take 3.3 s for [NOCl] to decrease to 0.042 M.

6 0
4 years ago
How many grams of AgNO3 are needed to prepare a 75.00 mL solution that is 6.5% (m/v)?
FrozenT [24]

Answer:

Volume of AgNO₃ = 4.9 ml (Approx)

Explanation:

Given:

Total solution = 75 ml

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Find:

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Computation:

Volume of AgNO₃ = Total solution x Volume of AgNO₃

Volume of AgNO₃ = 75 x 6.5%

Volume of AgNO₃ = 4.875

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3 years ago
Add an oxide ion to Fe2O3
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Iron Oxide (Fe2O3) also known as rust is also an ionic bond, it has metallic compound Iron (Fe) which contains positively charged cations and it has nonmetallic compound Oxygen (O) which contains negatively charged anions.

Explanation:

i hope it help

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