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OleMash [197]
3 years ago
9

N2O5(g) → NO3(g) + NO2(g)

Chemistry
1 answer:
sammy [17]3 years ago
7 0

Answer:

It will take 77.8 seconds for 95% of sample to react

Explanation:

As the given reaction obeys 1st order therefore-

                        [N_{2}O_{5}]=[N_{2}O_{5}]_{0}\times (\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}

Where [N_{2}O_{5}] is the concentration of N_{2}O_{5} after "t" time, [N_{2}O_{5}]_{0} is the initial concentration of N_{2}O_{5} and t_{\frac{1}{2}} is half life

Here, \frac{[N_{2}O_{5}]}{[N_{2}O_{5}]_{0}}=\frac{100-95}{100}=0.05 and t_{\frac{1}{2}}=18.0 seconds

So, 0.05=(\frac{1}{2})^{\frac{t}{18.0seconds}}

or, t=77.8 seconds

So, it will take 77.8 seconds for 95% of sample to react

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For your experiment, you would need to see decide what your hypothesis is before you design the experiment. If you want to see if the volume of gas changes depending on the container it's in, then you need to set it up depending on what you want to do with the volume.
The manipulated variable would be whatever you change, so if you switch container sizes, that would be the manipulated variable and the responding variable would be the volume of the gas.

I hope this helps!
6 0
3 years ago
What steps are involved in the process that turns sediment back to rock? Select all that apply.
jeyben [28]

Answer:

compaction and cementation

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4 0
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which Substance can be used to Neutralize nitric acid? A Acetic acid C Hydrogen peroxide b milk of magnesia D Ethanol​
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Answer:B

Explanation:

7 0
2 years ago
Suppose now that you wanted to determine the density of a small crystal to confirm that it is phosphorus. From the literature, y
denis23 [38]

Answer:

Volume of CHCl_3   = 15.31 mL

Volume of CHBr_3 = 4.69 mL

Explanation:

Given that:

the density of the mixture = 1.82 g/mL

From the density of the pure samples

The density of CHCl_3 = 1.492 g/mL

The density of CHBr_3 = 2.890 g/mL

The total volume of the liquid mixture = 20.0 mL

Suppose the volume of  CHCl_3 = P ml

and the volume of CHBr_3 = Q ml

the sum of their volumes should be equal to the total volume of the mixture

P \ ml + Q \ ml = 20 ml  ----- (1)

However, we know that Density = mass/volume

∴ mass = density × volume

The equation can now be expressed as:

\mathtt{(Density \ of  \ CHCl_3 \times Vol. \ of  \ CHCl_3 ) + (Density  \  of \  CHBr_3  \times \ volume \ of \ CHBr_3)} = \mathtt{ (Density  \ of \ mixture \times volume \ of \ the \ mixture)}

1.492 g/mL × P mL + 2.890 g/mL × Q mL = 1.82 g/mL × 20 mL  ---- (2)

From equation (1) ;

let Q = 20 - P

The replace the value of P into equation (2)

1.492 g/mL × P mL + 2.890g/mL × (20 - P) mL = 1.82 g/mL × 20 mL

1.492 P g + 57.8g - 2.890 P g =  36.4g

1.492 P g - 2.890 P g = 36.4g - 57.8g

-1.398 P g = -21.4g

P = -21.4g/-1.398g

P = 15.31 mL

Q = 20 - P

Q = (20 - 15.31) mL

Q = 4.69 mL

∴

Volume of CHCl_3   = 15.31 mL

Volume of CHBr_3 = 4.69 mL

6 0
3 years ago
__Mg + __Fe2O3 -> __MgO + __Fe
Anika [276]

Answer:

Your correct answer is A. 1,2,1,2

Explanation:

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