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3 years ago

Which of the following is a property of both gases and liquids?

Chemistry

1 answer:

Crazy boy [7]3 years ago

4 0

FLUIDITY IS PROPERTY OF BOTH LIQUIDS AND GASES

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Cells that carry info throughout your nervous system

Rama09 [41]

Neurons are cells that carry info in the nervous system

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2 years ago

What is the hydrogen concentration of a solution with a pH of 2.1?

Black_prince [1.1K]

Answer:

8×10^(-3) mol/L

Explanation:

The formula for finding the hydrogen ion concentration is...

[H⁺] = 10^-ph

[H⁺] = 10^(-2.1)

[H⁺] = 0.00794...mol/L = 8×10^(-3) mol/L

The answer is to 1 significant digit because the pH has one decimal place.

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2 years ago

12. In a gas mixture consisting of carbon dioxide (CO2) and nitrogen (N2), the carbon dioxide molecules have a root-mean-square

zaharov [31]

Answer:

The correct answer is option e.

Explanation:

The formula used for root mean square speed is:

$\nu_{rms}=\sqrt{\frac{3kN_AT}{M}}$

where,

$\nu_{rms}$ = root mean square speed

k = Boltzmann’s constant = $1.38\times 10^{-23}J/K$

T = temperature

M = Molar mass

$N_A$ = Avogadro’s number = $6.02\times 10^{23}mol^{-1}$

Root mean square speed of carbon dioxide molecule:

$\nu_{rms}= 550 m/s$

Temperature of the mixture = T =?

Molar mass of carbon dioxide = 44 g/mol = 0.044 kg/mol

$\nu_{rms}=550 m/s=\sqrt{\frac{3\times 1.38\times 10^{-23}J/K\times 6.022\times 10^{23}mol^{-1}T}{0.044 kg/mol}}$

T = 533.87 K

Root mean square speed of nitrogen molecule:

$\nu'_{rms}= ?s$

Molar mass of nitrogen = 28 g/mol = 0.028 kg/mol

$\nu'_{rms}=\sqrt{\frac{3\times 1.38\times 10^{-23}J/K\times 6.022\times 10^{23}mol^{-1}\times 533.87 K}{0.028 kg/mol}}$

$\nu'_{rms}=689.46 m/s\approx 689 m/s$

689 m/s is the root-mean-square speed of the nitrogen molecules in the sample.

7 0

2 years ago

What is seafood empanada? Explain?

Lyrx [107]

It’s an empanada but instead of one with chicken or cheese or beef or whatever you usually eat empanadas of, it has seafood usually they have shrimp or crab, I hope this helps!

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2 years ago

Calculate the number of atoms in 4.2 moles of sulfur atoms.

Anuta_ua [19.1K]

1 mole = 6.022*10^23 atoms
4.2 moles sulfur = 4.2* 6.022 * 10^23 sulfur atoms = 2.421*10^24 sulfur atoms

1 mole sulfur = <span>32.065 g sulfur
4.2 moles sulfur = 4.2 * </span>32.065 g sulfur = 128.901 g sulfur

7 0

2 years ago