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vladimir2022 [97]
3 years ago
10

PLS HELP I WILL MARK BRAINLYEST BUT PLS JUST HELP MEEEEEEEEEEEEEE

Chemistry
2 answers:
VLD [36.1K]3 years ago
8 0

Answer:

hi kirishima it is me 0412919

Explanation:

i will give u brainly :D

Irina-Kira [14]3 years ago
3 0

Answer:

Radio waves are electromagnetic waves within the frequencies 30KHz - 300GHz, and include microwaves. Microwaves are at the higher frequency end of the radio wave band and low frequency radio waves are at the lower frequency end.

Explanation:

hope this helps and i hope i can please get brainliest

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Please help with completing number 5
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D.

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Read 2 more answers
A flask at room temperature contains exactly equal amounts (in moles) of nitrogen and xenon.
zalisa [80]

Answer:

a) Same

b) Nitrogen

c) Same

d) Nitrogen

Explanation:

a)

The formula for partial pressure of a gas is equal to

p_B = n_B \frac{RT}{V}

Here nB is the number of moles .

The number of moles for both the gases are same and hence the partial pressure for the two gases will also be same.

b) The greater average velocity is calculated by using following formula

v_{RMS} = \sqrt{3RTM}

Here M is the molar mass.

Molar mass of nitrogen is greater than the molar mass of xenon and hence nitrogen will have higher greater average velocity

c) As we know, the average kinetic energy of gas particles is dependent on the absolute temperature of gas and if all the gases are at same temperature, their kinetic energy will also be same. Since nitrogen and xenon are at same temperature, their kinetic energy will be same

d) Effusivity is depended directly on  the thermal conductivity,  density and  and the specific heat capacity.

All these three parameters are higher in case of nitrogen. Thus, it will effuse first

4 0
3 years ago
Iron displaces copper from a solution of a copper salt.The reaction is deemed as a redox reaction. Give reason.
mel-nik [20]
When the iron is not bonded to anything the oxidation number is 0 but when it is bonded to a nonmetal it will be positive. All reactions in which the oxidation number changes are considered redox.
3 0
3 years ago
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