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3 years ago

The United States was the first modern

Chemistry

1 answer:

kicyunya [14]3 years ago

4 0

Answer:

first modern?

Explanation:

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In 1887, Albert A. Michelson and Edward W. Morley conducted an experiment to measure the speed at which the Earth moves through

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C.The results of the Michelson-Morley experiment did not fit the theory of the luminiferous ether, so the theory had to be rejected.

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When the energy is removed what will happen to a gas?

creativ13 [48]

Answer:

Hey mate 
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Explanation:

<h3>Removing Energy: Removing energy will cause the particles in a liquid to begin locking into place. A. Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.</h3>

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3 years ago

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In a video game a flying cocunut moves

Delvig [45]

Answer:

In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with a constant velocity of 10 meters/second.

Explanation:

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3 years ago

Calculate the volume of 0.684mol of carbon dioxide at s.t.p. show working

solong [7]

Answer: The volume of 0.684 mol of carbon dioxide at s.t.p. is 15.3 L

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = ?

n = number of moles = 0.684

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $273K$ (at STP)

$V=\frac{nRT}{P}$

$V=\frac{0.684\times 0.0821L atm/K mol\times 273K}{1atm}$

$V=15.3L$

Thus the volume of 0.684 mol of carbon dioxide at s.t.p. is 15.3 L

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3 years ago

What is the equilibrium expression for the reaction below?

Mariana [72]

Answer:

A. $K=\frac{[N_2O]^2}{[N_2]^2[O_2]}$

Explanation:

Hello there!

In this case, for us to figure out the appropriate equilibrium expression, it will be firstly necessary for us to recall the law of conservation of mass which states that the equilibrium constant of an equilibrium chemical reaction is written by dividing the products and reactants and including the stoichiometric coefficients as exponents. In such a way, for the given reaction, we will have:

$K=\frac{[N_2O]^2}{[N_2]^2[O_2]}$

As N2O is the product whereas N2 and O2 are reactants; thus, the equilibrium expression will be A.

Regards!

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2 years ago