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3 years ago

Please help. I was absent and I’m sick. I don’t know what to do.

Chemistry

1 answer:

lozanna [386]3 years ago

7 0

1.) rotates
2.) revolution
3.) axis, tilt
4.) gravity
5.) this is not correct because the earth revolves around the sun

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3. longitude is measured in degrees, hours, and seconds. a. true b. false

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3 years ago

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3 years ago

Read 2 more answers

By which process aqua fortis is manufactured

kap26 [50]

Answer: Aqua fortis is also known as Nitric Acid

Explanation: and the process in making aqua fortis is THE OSTWALDS PROCESS

detailed explanation by me

ammonia is also used in this process, which is reacted with oxygen and water and a catalyst platinum.

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3 years ago

The decomposition of dinitrogen pentoxide, N2O5, to NO2 and O2 is a first-order reaction. At 60°C, the rate constant is 2.8 × 10

Sati [7]

Answer:

a. 113 min

Explanation:

Considering the equilibrium:-

2N₂O₅ ⇔ 4NO₂ + O₂

At t = 0 125 kPa

At t = teq 125 - 2x 4x x

Thus, total pressure = 125 - 2x + 4x + x = 125 - 3x

125 - 3x = 176 kPa

x = 17 kPa

Remaining pressure of N₂O₅ = 125 - 2*17 kPa = 91 kPa

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given that:

The rate constant, k = $2.8\times 10^{-3}$ min⁻¹

Initial concentration $[A_0]$ = 125 kPa

Final concentration $[A_t]$ = 91 kPa

Time = ?

Applying in the above equation, we get that:-

$91=125e^{-2.8\times 10^{-3}\times t}$

$125e^{-2.8\times \:10^{-3}t}=91$

$-2.8\times \:10^{-3}t=\ln \left(\frac{91}{125}\right)$

$t=113\ min$

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3 years ago

WHAT IS THE CHEMICAL NAME FOR ALKYNE HAVING

madreJ [45]

Answer:

Ee your house 6r2f5r56rrrr6gjyf

Explanation:

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2 years ago