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Artyom0805 [142]

2 years ago

14

Which state of matter has particles that slide past each other while remaining in contact? Gas Liquid Plasma Solid

1 answer:

kolbaska11 [484]2 years ago

3 0

This state of matter as described is that of the liquid phase. The molecules making up the liquid are not near, yet also not far. As a result, these molecules just slide past each other. In contrast, molecules of gas do not technically slide past each other, but collide with each other because of high kinetic energy.

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When elemental sodium is added to water, the sodium atoms ionize spontaneously. uncharged na becomes na+. this means that the na

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Ionized, become charged, become a cation

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The nucleus of an atom is dense and positively charged. What was observed when positively charged particles were radiated onto a

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<span>According to my knowledge, I feel the answer is -
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2 years ago

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What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M methylamine, CH3NH2, with 20.00 mL of 0.10 M methylammonium c

olya-2409 [2.1K]

Answer:

pH=10.97

Explanation:

the solution of methyl amine with methylammonium chloride will make a buffer solution.

The pH of buffer solution can be obtained using Henderson Hassalbalch's equation, which is:

$pOH=pKb+log\frac{[salt]}{[base]}$

pH = 14- pOH

Let us calculate pOH $pOH=3.43+ (-0.397)=3.03$

$pH=14-pOH=14-3.03=10.97$

[Salt] = [methylammonium chloride] = 0.10 M (initial)

After adding base

$[salt] = \frac{molarityXvolume}{finalvolume}=\frac{0.1X20}{(20+50)}= 0.0286M$

[base] = [Methylamine]=0.10

After mixing with salt

$[base]= \frac{molarityXvolume}{finalvolume}=\frac{0.1X50}{(20+50)}= 0.0714M$

pKb= -log[Kb]= 3.43

Putting values

pOH = $3.43+log(\frac{[0.0286]}{0.0714}$

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2 years ago

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MatroZZZ [7]

Answer:

c

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2 years ago

The molar mass of nitrogen (N2) is 28.02 g/mol. What is the mass, in grams, of 4.60 mol of N2?

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7 0

2 years ago

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