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Dvinal [7]
3 years ago
5

Atomic Radius________across (left to right) a period and______down a group.

Chemistry
2 answers:
Lorico [155]3 years ago
7 0

Answer: Decreases across the period and increases down the group

Sonja [21]3 years ago
4 0
I’m pretty sure it’s Atomic Radius decrease across a period and increase down a group.
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Write the equilibrium reaction for (CH3)3N acting as a weak base in water. Be sure to include the phase labels for practice. The
Elan Coil [88]

<u>Answer:</u> The equilibrium reaction of trimethylamine with water is written below.

<u>Explanation:</u>

According to the Bronsted-Lowry conjugate acid-base theory:

  • An acid is defined as a substance which looses or donates protons and thus forming conjugate base.
  • A base is defined as a substance which accepts protons and thus forming conjugate acid.

The equilibrium reaction for the reaction of trimethylamine acting as a weak base in water follows:

(CH_3)_3N(aq.)+H_2O(l)\rightleftharpoons (CH_3)_3NH^+(aq.)+OH^-(aq.)

Hence, the equilibrium reaction of trimethylamine with water is written above.

8 0
4 years ago
Which structure is found in all eukaryotic​
velikii [3]

Answer:

Nucleus, golgi apparatus, cell membrane

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3 years ago
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How many moles of cacl2 are in 250 ml of a 3.0 m of cacl2 solution?
Margarita [4]
The appropriate response is Proximity. Purposes behind going out on a limb of living unlawfully in another nation are not just the normal upgrades in pay and living conditions yet, in addition, the expectation of in the long run being permitted to stay in the nation legitimately, as there might be a way to getting to be plainly naturalized. Living in another nation wrongfully incorporates an assortment of confinements, and additionally the danger of being kept and expelled or of confronting different authorizations
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Ultraviolet radiation and radiation of shorter wavelengths can damage biological molecules because they carry enough energy to b
Alja [10]

Answer:

439.7nm

Explanation:

Energy of a quantum can be calculated using below formula

E=hv...........eqn(1)

But v=λ/ c .........eqn(2)

If we substitute eqn(2) into eqn(1) we have

E= hc/(λ)

Where E= energy

h= Plank's constant= 6.62607004 × 10-34 m2 kg / s

c= speed of light

c= 2.998 × 10^8 m/s

λ= wavelength= ?

But the energy was given in Kj , it must be converted to Kj/ photon for unit consistency.

Energy E= 272 kJ/mol × 1mol/6.02× 10^23

Energy= 451.83× 10^-24 Kj/ photon

E= hc/(λ)...........eqn(1)

If we make λ subject of the formula

λ= hc/E

Then substitute the values we have

λ= [(6.626 × 10^-34) × (2.998 × 10^8)]/451.83× 10^-24

λ=(0.00043965) × (1Kj/1000J) × (10^9nm/1m)

λ=439.7nm

Hence, the longest wavelength of radiation with enough energy to break carbon-sulfur bonds is 439.7nm

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3 years ago
Answer to 51 please
Marat540 [252]

Answer:I think it is 263

Explanation:

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