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2 years ago

In which pair is the one on the left larger than the one on the right?

Chemistry

2 answers:

Nuetrik [128]2 years ago

5 0

Answer:

K is larger than K+

Explanation:

Given that the atomic radius is affected by the number of electrons arround the nucleus (being the numeber of protons constant). The lower the number of electrons, the stonger is the atraction between them and the protons resulting on a smaller atomic radius.

The K+ is a monovalent cation of K, meaning that it has 1 less electron than K and therefore a smaller radius.

GarryVolchara [31]2 years ago

3 0

K because parent atoms are always larger than their cations(positively charged atoms)

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Answer:

What is the best explanation for why a particle is striking point X? When the dense, positive alpha particle passes close to a positive nucleus of gold, the alpha particle repels and hits the screen at point X.

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3 years ago

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Torrey's neighbor told her that a marble rolling down a hill increases in velocity as it rolls down, but does not increase in ki

ziro4ka [17]

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3 years ago

For test 6 (150 hevy 50 light particles), what is the pressure contribution from the heavy particles?

lawyer [7]

Answer:

The pressure contribution from the heavy particles is 17.5 atm

Explanation:

According to Dalton's law of partial pressures, if there is a mixture of gases which do not react chemically together, then the total pressure exerted by the mixture is the sum of the partial pressures of the individual gases that make up the mixture.

In the simulation:

the pressure of the 50 light particles alone was determined to be 5.9 atm, the pressure of the 150 heavy particles alone was measured to be 17.5 atm,

the total pressure of the mixture of 150 heavy and 50 light particles was measured to be 23.4 atm

Total pressure = partial pressure of Heavy particles + partial pressure of light particles

23.4 atm = partial pressure of Heavy particles + 5.9 atm

Partial pressure of Heavy particles = (23.4 - 5.9) atm

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2 years ago

The period of a ripple on a lake is half a second. what is the frequency of the wave

Nataly_w [17]

Answer:

2 Hertz

Explanation:

<em>The frequency would be 2 Hertz.</em>

<u>The frequency of a wave is defined as the rate at which the particles of a medium vibrates when the wave is passed through it while the period of a wave is the time it takes the particles to make a complete cycle of vibration.</u>

The frequency of a wave is inversely related to its period and is defined by the following equation:

f = 1/t, where f is the frequency (in hertz) and t is the period (in seconds).

Hence, if the period of a ripple is 1/2 or 0.5 seconds, the frequency becomes;

f = 1/0.5 = 2 Hertz

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3 years ago