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siniylev [52]
3 years ago
14

what is a wavelength of radio wave that travels at the speed of light 3.0 x 10^8 m/s and has frequency of 200 megahertz (200 mil

lion hz)

Chemistry
1 answer:
Dimas [21]3 years ago
5 0

The answer is 0.15 m

Hope you can see the answer clearly...

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Equal volumes of two equimolar solutions of reactants a and b are mixed, and the reaction a+b→c occurs. at the end of 1h, a is 9
SVEN [57.7K]

<span>a)    </span>First order in A and zero order in B

<span>ln [A] = (ln 0.1) (2) + ln Ao = ln 0.01 + ln Ao = ln 0.01 Ao = 1.0%  of A will remain</span>

<span>b)    </span>First order in A and first order in B

<span>1/[A] – 1/[A]0= kt where t+=1 and k=9</span>

[A]/[A]=1/19=0.053=5.3%

<span>c)    </span>Zero order in both A and B

<span>[A]0-[A] = kt</span>

Then at 2 hours [A]=0 All of it has reacted.

 

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8 0
3 years ago
For pea plants, T represents a dominant allele for tall pea plants and t is the recessive allele for short pea plants. If two pl
myrzilka [38]
75% (TT,Tt,Tt,tt) hope that helps :)
6 0
2 years ago
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Hydrogen and chlorine gases react to form HCl. You and a friend are on opposite sides of a long hallway, you with H2 and your fr
natali 33 [55]

Answer: It is true that Your friend should release the Cl_{2} first.

Explanation:

The velocity of particles of a gas is inversely proportional to the mass of gas. This means that more is the mass of gas less will be its velocity.

Or, more will be the mass of gas more slowly it will move from one place to another.

The molar mass of chlorine gas is more than the molar mass of hydrogen gas. Therefore, chlorine gas will move slowly.

So, your friend should release the Cl_{2} gas first and then according to the length of room you should release the H_{2} gas.

Thus, we can conclude that it is true that Your friend should release the Cl_{2} first.

4 0
3 years ago
Write the concentration equilibrium constant expression for this reaction.
Akimi4 [234]

In a chemical reaction, the equilibrium constant refers to the value of its reaction quotient at chemical equilibrium, that is, a condition attained by a dynamic chemical system after adequate time has passed, and at which its composition has no measurable capacity to undergo any kind of further modification.  

The given reaction is: HCN (aq) + OH⁻ = CN⁻ (aq) + H2O (l)

The equilibrium constant = product of concentration of products / product of concentration of reactants

(Here, H2O is not considered as its concentration is very high)

So, Keq = [CN⁻] / [HCN] [OH⁻]


8 0
3 years ago
Which of these compounds are oxidizing agents?
elena55 [62]

i guess its e) Mn (VII)

if it was wrong pls let me knw


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