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ladessa [460]
3 years ago
12

Look at the picture of two different substances above. Which substance is a mixture? A. Y and Z

Chemistry
2 answers:
Murrr4er [49]3 years ago
7 0

Answer:

Option B

Explanation:

A mixture is two or more substances combined by physical means. Substance Y is composed of many different types of substances mixed together. Therefore, it is a mixture. Substance Z is composed of all the same types of particles. Therefore, it is not a mixture.

Feliz [49]3 years ago
5 0

Answer:

option B is correct.

Y is a mixture in the picture.

Explanation:

Different types of substances combine physically and form a mixture.  

Mixture formed by the combination of two or more substances that that combine in same physical state.

For example mixture of copper sulphate and solid chloride in dry form and that will look like white and blue crystal in a mixture.

The picture Z showing dots of same color and is not a mixture, while picture Y shows dots of different colors clearly indicating that it is picture for mixture.

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ioda

Answer:

t = 7.58 * 10¹⁹ seconds

Explanation:

First order rate constant is given as,

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substituting the values in the equation of the rate constant;

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t = 2.303 / 3.037 * 10⁻²⁰

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8 0
3 years ago
A salt bridge is used to provide electrons a path to flow from the electrode of one half-cell to another. TRUE FALSE
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A mole of oxygen and a mole of hydrogen (at STP) have all of the following in common EXCEPT
Drupady [299]

Answer:

Root mean squared velocity is different.

Explanation:

Hello!

In this case, since we have a mixture of oxygen and nitrogen at STP, which is defined as a condition whereas T = 298 K and P = 1 atm, we can infer that these gases have the same temperature, pressure, volume and moles but a different root mean squared velocity according to the following formula:

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Since they both have a different molar mass (MM), nitrogen (28.02 g/mol) and oxygen (32.02 g/mol), thus we infer that nitrogen would have a higher root mean squared velocity as its molar mass is less than that of oxygen.

Best regards!

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3 years ago
Molarity formula what is the molarity of a solution in which 3 moles of nacl is dissolved in 1.5 kg of water
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