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3 years ago

What is true about two neutral atoms of the element gold

1 answer:

3 0

I'm pretty sure it's they have the same properties, because they don't have different masses, they don't both have missing nuclei, and they don't hav a different # of protons. Can't recall much else about the two, but I distinctly remember that

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Please help me with this chemistry question

aliina [53]

Answer:

Explanation:

8 0

3 years ago

According to the kinetic-molecular theory, the average kinetic energy of gas

vladimir1956 [14]

Answer:

The average kinetic energy of a gas depends only on its temperature.

Explanation:

The average kinetic energy of particles in a gas can be found using the equation

$\displaystyle \text{Average K.E.} = \frac{3}{2}k\cdot T$ ,

where

$k$ is the Stefan-Boltzmann constant, and
$T$ is the absolute temperature of this gas (the one in degree Kelvins.)

As seen in this equation, the average kinetic energy of particles in a gas depends only on the temperature of the gas. Also, since the question is asking for the average not the total kinetic energy, the number of particles in this gas doesn't matter, either.

8 0

3 years ago

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If I add water to 100mL of a 0.15M NaOH solution until the final volume is 150mL, what will the molarity of the diluted solution

Mars2501 [29]

Answer : A

0,15 moles of NaOH -------in-------1000ml

x moles of NaOH ---------in-------100ml

x= 0,015 moles of NaOH

final volume =150ml

0,015 moles of NaOH -------in------150ml

x moles of NaOH ------in--------1000ml

x= 0,1 moles of NaOH

7 0

3 years ago

It is a type of mixture that separates on standing

erma4kov [3.2K]

Answer:

B) Suspensions

In suspension the size of particles are big as compared to solution

Colloids shows Tyndall effect (,for ex milk)

6 0

3 years ago

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A sample of grape juice has a hydroxide ion concentration of 1.4 × 10-10 M.

vodka [1.7K]

<span>grape juice
pOH = -log[1.4*10⁻¹⁰]</span>≈9.6
pH=14-pOH=14-9.6=4.4

orange juce
pH= -log[1.8*10⁻⁴]=3.7

Orange juice has lower pH, so it is more acidic.

8 0

3 years ago

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