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3 years ago

What is a ecosystems

Chemistry

2 answers:

Maslowich3 years ago

7 0

Answer:

a community or group of living organisms that live in and interact with each other in a specific environment.

Explanation:

DIA [1.3K]3 years ago

6 0

Answer:

<em>Hi! Todoroki here</em>

Explanation:

a biological community of interacting organisms and their physical environment.

<em>Your Welcome Have a Great Day!!!1</em>

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HELP PLS PLS PLS ILL MARK U BRAINLIEST

777dan777 [17]

Answer:

2 FeCl3 → 2 Fe + 3 Cl2

Explanation:

2 Fe and 6 Cl on the reactants side, and 2 Fe and 6 Cl on the products side.

7 0

2 years ago

The reaction: 2 SO2(g) + O2(g) --> 2 SO3(g) has an equilibrium constant of K1. What is the K value for the reaction: SO3(g) -

Murljashka [212]

<u>Answer:</u> The value of equilibrium constant for reverse reaction is $(\frac{1}{K_1})^{1/2}$

<u>Explanation:</u>

The given chemical equation follows:

$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$

The equilibrium constant for the above equation is $K_1$

We need to calculate the equilibrium constant for the reverse equation of above chemical equation, which is:

$SO_3(g)\rightarrow SO_2(g)+\frac{1}{2}O_2(g)$

The equilibrium constant for the reverse reaction will be the reciprocal of the initial reaction.

If the equation is multiplied by a factor of ' $\frac{1}{2}$ ', the equilibrium constant of the reverse reaction will be the 1/2 power of the equilibrium constant of initial reaction.

The value of equilibrium constant for reverse reaction is:

$K_{eq}'=(\frac{1}{K_1})^{1/2}$

Hence, the value of equilibrium constant for reverse reaction is $(\frac{1}{K_1})^{1/2}$

8 0

3 years ago

You are performing a simple distillation of roughly 50:50 liquid solution containing two components, hexane and nonane You place

kifflom [539]

Answer:

Explanation:

Refractive index is a undimensional measurement that describes how fast light travels through the material. It is used to see the liquid purity of compounds.

In this problem you have in the beginning a 50:50 solution oh hexane:nonane and realize distillation.

In distillation the collect is enriched with the most volatille substance (hexane). So you will have in the final sample more hexane than nonane.

Assuming the refractive index varies linearly with mole fraction, you will have:

1,375 → 100% hexane

1,407 → 100% nonane

1,385 → ???

molar fraction of hexane:

100 - (1,385 - 1,375) / (1,407 - 1,375) × 100 = 69 %

molar fraction of nonane:

100 - (1,407 - 1,385) / (1,407 - 1,375) × 100 = 31 %

The relation of the distillating fraction is (69:31) of (hexane:nonane)

You can see that distillation is a technique that allows the separation of a liquid mixture, for example.

I hope it helps!

6 0

3 years ago

a gas cylinder that contains argon has an internal volume of 43.8 l. a pressure gauge attached to the cylinder reads 1930 psi (1

Tanya [424]

The mass of argon contained in the cylinder is 9691.47 g

<h3>How to determine the mole of the argon</h3>

Volume (V) = 43.8 L
Pressure (P) = 1990 psi = 1990 / 14.7 = 135.37 atm
Temperature (T) = 24.7 °C = 24.7 + 273 = 297.7 K
Gas constant (R) = 0.0821 atm.L/Kmol
Number of mole (n) =?

Using the ideal gas equation, the number of mole of the nitrogen oxide can be obtained as follow:

PV = nRT

Divide both side by RT

n = PV / RT

n = (135.37 × 43.8) / (0.0821 × 297.7)

n = 242.59 moles

<h3>How to determine the mass of argon </h3>

Mole of argon = 242.59 moles
Molar mass of argon = 39.95 g/mol
Mass of argon = ?

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of argon = 242.59 × 39.95

Mass of argon = 9691.47 g

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Complete question

A gas cylinder that contains argon has an internal volume of 43.8L A pressure gauge attached to the cylinder reads 1990 psi (1 atm=14.7 psi) at 24.7 Celsius

What mass of argon is contained in the cylinder?

4 0

1 year ago

What is the relative mass of an electron?

elena-14-01-66 [18.8K]

The relative mass of an electron is 1/1840 the mass of a C-12 atom. Hence, option B is correct.

<h3>What is an electron?</h3>

An electron is a negatively charged subatomic particle.

An electron is very small, about 1/1,837th the mass of a proton. Atomic Weights Atomic mass of an atom is expressed in atomic mass units (amu) which are approximately $1.66 X 10^{-24}$ grams. A more conventional way of expressing the mass of an atom is Atomic Weight.

Atomic mass units are expressed relative to the atomic mass unit of an unbound neutral carbon-12 atom.

Hence, the relative mass of an electron is 1/1840 the mass of a C-12 atom.

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6 0

2 years ago

What is a ecosystems​

What is a ecosystems