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I am Lyosha [343]

3 years ago

5

Which element has a greater electronegativity: Cr, P, or Ba

1 answer:

KATRIN_1 [288]3 years ago

6 0

Answer:

P

Explanation:

Information about various chemical compounds and elements. ... P. 2.19. S. 2.58. Cl. 3.16. Ar. n.a.. 4. K. 0.82. Ca. 1.00. Sc. 1.36. Ti. 1.54. V. 1.63. Cr. 1.66. Mn. 1.55. Fe. 1.83. Co. 1.88. Ni. 1.91. Cu. 1.90. Zn. 1.65. Ga. 1.81 ... electronegativity scale, although in the Allred-Rochow scale, helium has the highest electronegativity.

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Does photosynthesis release engrey

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Answer:

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If solid iron is dropped in liquid iron, it will most likely?

S_A_V [24]

it will sink

Explanation:

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Read 2 more answers

2. Which situation best represents conduction?

ikadub [295]

Answer:

c

Explanation:

touching a hot piece of metal. because the energy or the hotness of the pot is touching your hand which is a direct contact.

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3 years ago

Nitrogen gas at 300 k and 200 kpa is throttled adiabatically to a pressure of 100 kpa if the change in kinetic energy is negligb

erastovalidia [21]

Answer:

The temperature of the Nitrogen after throttling is $T_2 = 300 \ K$

Explanation:

From the question we are told that

The temperature is $T_1 = 300 \ K$

The pressure is $P = 200 \ kPa = 200 * 10^{3} \ Pa$

The pressure after being $P_1 = 100 \ kPa = 100 * 10^{3} \ Pa$

Generally from the first law of thermodynamics we have that

$Q - W = \Delta U + \Delta K$

Here $\Delta U$ is the change internal energy which is mathematically represented as

$\Delta U = C_p (T_2 - T_1)$

Here $C_p$ is the specific heat of the gas at constant pressure

$\Delta K$ is the change kinetic energy which is negligible

Q is the thermal energy which is Zero for an adiabatic process

W is the work done and the value is zero given that the gas was throttled adiabatically

So

$0= \Delta U +0$

=> $\Delta U = 0$

=> $(T_2 - 300) = 0$

=> $T_2 = 300 \ K$

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3 years ago

When 0.250 moles of a gas is placed in a container at 298K, it exerts a pressure of 93kPa. What is the volume of the container?

Drupady [299]

I think is c , I’m not sure

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