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3 years ago

Plz help meeeeeeee !!!!!

Chemistry

1 answer:

katovenus [111]3 years ago

6 0

Answer:

Na2S

Explanation:

last answer with Na2S

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Which statement describes the general process of diffusion?

irina1246 [14]

Answer:

Molecules start out unevenly distributed and end up evenly distributed.

Explanation:

Diffusion is the process by which molecules of a substance move from a region of higher concentration to a region of lower concentration until equilibrium is attained.

Molecules start out unevenly distributed and end up evenly distributed in a particular medium. Diffusion occurs due to the particulate nature of matter. When the particles that make up a substance are concentrated at a point, the collide more often with one another causing each molecule to spread out in order to occupy all the available space.

Diffusion occurs in gases, liquids and solids but occurs fastest in gases. Diffusion can be observed for example, in the spread of the smell of a dead rat from one point in a room to every part of the room.

7 0

3 years ago

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For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrations

miskamm [114]

Answer:

$K_p= 3966.01$

Explanation:

The relation between Kp and Kc is given below:

$K_p= K_c\times (RT)^{\Delta n}$

Where,

Kp is the pressure equilibrium constant

Kc is the molar equilibrium constant

R is gas constant

T is the temperature in Kelvins

Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)

For the first equilibrium reaction:

$2CH_4_{(g)}\rightleftharpoons C_2H_2_{(g)}+3H_2_{(g)}$

Given: Kc = 0.140

Temperature = 1778 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T = (1778 + 273.15) K = 2051.15 K

R = 0.082057 L atm.mol⁻¹K⁻¹

Δn = (3+1)-(2) = 2

Thus, Kp is:

$K_p= 0.140\times (0.082057\times 2051.15)^{2}$

$K_p= 3966.01$

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3 years ago

PLEASE HELP

AfilCa [17]

I think it’s salt water

7 0

3 years ago

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Choose the best description of what's wrong with the following electron configuration for an electrically-neutral atom of sulfur

lions [1.4K]

Answer:

Explanation:

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3 years ago

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What is the difference aldehyde and ketone in organic chemistry

timama [110]

Answer:

An aldehyde is a carbonyl group with a carbonyl carbon bonded to hydrogen and can be oxidized to a ketone while a ketone is a carbonyl group with a carbonyl carbon only bonded to oxygen atom and cannot be oxidized

Some of oxidizing agents are potassium dichromates, bradys reagent....

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2 years ago