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2 years ago

Which of these is part of the geosphere?

Chemistry

2 answers:

Neporo4naja [7]2 years ago

4 0

Answer:

Option (D)

Explanation:

Geosphere refers to the region where there is continuous interaction between the hydrosphere, lithosphere, atmosphere and cryosphere.

Hydrosphere includes the water bodies on earth.

Lithosphere includes the region that contains the crust, mantle, landforms and their composition.

Cryosphere refers to all the snow covered region on earth.

Atmosphere is considered to be the gaseous envelope of the earth comprised of different layers.

The skeleton of an animal does not show any interaction between the above different spheres. So it is not a part of geosphere.

Hence, the correct answer is option (D)

frez [133]2 years ago

3 0

The answer is B its anothey fancy word for lithospher

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An independent variable is:

weqwewe [10]

Answer: The variable that you change in an experiment

Explanation: It does not rely on any other factors that deal with the experiment

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3 years ago

1 -Is Apple Juice with No Pulp a pure substance or a mixture ?

-Dominant- [34]

1. Pure substance

2.mixture

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3 years ago

2. The change in internal energy for the expansion of a gas sample is -4750 J. How much work is done if the gas sample loses 112

Radda [10]

Answer:

The work done by the gas expansion is 5875 J,

Since the work done is positive, the work is done by the gas on the surroundings.

Explanation:

Given;

change in internal energy, ΔU = -4750 J

heat transferred to the system, Q = 1125 J

The change in internal energy is given by;

ΔU = Q - W

Where;

W is the work done by the system

The work done by the system is calculated as;

W = Q - ΔU

W = 1125 - (-4750)

W = 1125 + 4750

W = 5875 J

Since the work done is positive, the work is done by the gas on the surroundings (energy flows from the gas to the surroundings).

Therefore, the work done by the gas expansion is 5875 J

7 0

3 years ago

At a particular temperature, K = 4.1 ✕ 10−6 for the following reaction. 2 CO2(g) 2 CO(g) + O2(g) If 2.3 moles of CO2 is initiall

mestny [16]

Answer:

concentration of $[O_2]$ = 0.0124 = 12.4 ×10⁻³ M

concentration of $[CO]$ = 0.0248 = 2.48 ×10⁻² M

concentration of $[CO_2]$ = 0.4442 M

Explanation:

Equation for the reaction:

$2CO_2_{(g)$ ⇄ $2CO_{(g)$ + $O_2_{(g)$

Concentration of $CO_2_{(g)$ = $\frac{2.3}{4.9}$ = 0.469

For our ICE Table; we have:

$2CO_2_{(g)$ ⇄ $2CO_{(g)$ + $O_2_{(g)$

Initial 0.469 0 0

Change - 2x +2x +x

Equilibrium (0.469-2x) 2x x

K = $\frac{[CO]^2[O]}{[CO_2]^2}$

K = $\frac{[2x]^2[x]}{[0.469-2x]^2}$

$4.1*10^{-6}=\frac{2x^3}{(0.469-2x)^2}$

Since the value pf K is very small, only little small of reactant goes into product; so (0.469-2x)² = (0.469)²

$4.1*10^{-6} = \frac{2x^3}{(0.938)}$

$2x^3 =3.8458*10^{-6$

$x^3 =\frac{3.8458*10^{-6}}{2}$

$x^3=1.9229*10^{-6$

$x=\sqrt[3]{1.9929*10^{-6}}$

x = 0.0124

∴ at equilibrium; concentration of $[O_2]$ = 0.0124 = 12.4 ×10⁻³ M

concentration of $[CO]$ = 2x = 2 ( 0.0124)

= 0.0248

= 2.48 ×10⁻² M

concentration of $[CO_2]$ = 0.469-2x

= 0.469-2(0.0124)

= 0.469 - 0.0248

= 0.4442 M

3 0

3 years ago

A sealed glass jar has a small amount of water on the bottom. The rest of the volume in the jar is taken up by helium gas at a p

Natalija [7]

Answer:

The temperature of the water is 70°C

Explanation:

Partial pressure of helium gas = 526 mmHg

Total pressure inside the jar= 760 mmHg

Suppose partial pressure of helium gas is $P_H_e$ and partial pressure of water is $P_H__2O$

And total pressure is $P_T$

As we know

$\mathrm{P}_{\mathrm{T}}=\mathrm{P}_{\mathrm{HE}}+\mathrm{P}_{\mathrm{H} 2 \mathrm{O}}$

Hence

Putting the values

$760=526+\mathrm{P}_{\mathrm{H} 2 \mathrm{O}}$

$\mathrm{P}_{\mathrm{H} 2 \mathrm{O}}=760-526$

$\mathrm{P}_{\mathrm{H} 20}=234 \mathrm{mm} \mathrm{Hg}$

In bar,

$\mathrm{P}_{\mathrm{H} 2 \mathrm{O}}=234 \mathrm{mm} \mathrm{Hg} \times \frac{1.01325 \mathrm{bar}}{760 \mathrm{mm} \mathrm{Hg}}$

= 0.312 bar

Now according to the steam table

With the vapour pressure of water as 0.312 bar the temperature corresponds to 70°C

8 0

3 years ago