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3 years ago

What does activation energy has to do with a chemical reaction.

Physics

1 answer:

asambeis [7]3 years ago

6 0

Explanation:

Activation energy and reaction rate

The activation energy of a chemical reaction is closely related to its rate. Specifically, the higher the activation energy, the slower the chemical reaction will be. ... The released energy helps other fuel molecules get over the energy barrier as well, leading to a chain reaction.

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Find the time t2 that it would take the charge of the capacitor to reach 99.99% of its maximum value given that r=12.0ω and c=50

defon

Answer:

Explanation:

Given that, .

R = 12 ohms

C = 500μf.

Time t =? When the charge reaches 99.99% of maximum

The charge on a RC circuit is given as

A discharging circuit

Q = Qo•exp(-t/RC)

Where RC is the time constant

τ = RC = 12 × 500 ×10^-6

τ = 0.006 sec

The maximum charge is Qo,

Therefore Q = 99.99% of Qo

Then, Q = 99.99/100 × Qo

Q = 0.9999Qo

So, substituting this into the equation above

Q = Qo•exp(-t/RC)

0.9999Qo = Qo•exp(-t / 0.006)

Divide both side by Qo

0.9999 = exp(-t / 0.006)

Take In of both sodes

In(0.9999) = In(exp(-t / 0.006))

-1 × 10^-4 = -t / 0.006

t = -1 × 10^-4 × - 0.006

t = 6 × 10^-7 second

So it will take 6 × 10^-7 a for charge to reached 99.99% of it's maximum charge

8 0

3 years ago

a weather balloon slowly expands as energy is transferred as heat from the outside air. if the average net pressure is 1.5×10^5m

Alexxx [7]

There is only one pressure this situation would be a "constant pressure" process

3 0

4 years ago

Read 2 more answers

The pressure of a 1.0 liter balloon is at 1 atm at 293 K if you were to take the balloon into a freezer that is still at One ATM

Fofino [41]

Here we can say that number of moles as well as pressure will remain same for the balloon

so here we can say by ideal gas equation

$PV = nRT$

so here for constant pressure and constant number of moles we have

$\frac{V_1}{T_1} = \frac{V_2}{T_2}$

$\frac{1}{293} = \frac{V}{263}$

now by rearranging the equation we have

$V = \frac{263}{293}$

$V = 0.89 Liter$

so final volume will be 0.89 liter

5 0

3 years ago

Why is a standard system of measurement important?

Llana [10]

The best answer among the following choices would be A) or the first option Scientists want to share measurements data that they can understand.

6 0

4 years ago

Read 2 more answers

I NEED HELP PLEASE, THANKS! :)

Rainbow [258]

Explanation:

Usually when we think of waves, we think of transverse waves. These are waves where points move up and down perpendicular to the motion of the wave. Examples include water waves, whipping a rope, or even doing the "wave" in a crowd. You can think of these as "two dimensional" waves.

Longitudinal waves are waves where points move left or right, parallel to the motion of the wave. In other words, there is compression and expansion of the medium. Examples include sound waves, or pulses in a slinky.

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4 years ago