2 years ago

Explain the arrangement of particles in solids, liquids and gases.

Chemistry

1 answer:

Alex787 [66]2 years ago

6 0

Solids are tightly compacted
Liquids are medium
And gases are very spaced and floating around

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The atomic bomb detonated in 1945 produced an explosion equivalent to 18,600 tons of TNT from 5 kg of _____.

kvasek [131]

JAPAN GOT NUKED LOL its so funny

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3 years ago

What is the Ka of a weak acid (HA) if the initial concentration of weak acid is 4.5 x 10-4 M and the pH is 6.87? (pick one)

rewona [7]

Answer:

Ka = $4.04 \times 10^{-11}$

Explanation:

Initial concentration of weak acid = $4.5 \times 10^{-4}\ M$

pH = 6.87

$pH = -log[H^+]$

$[H^+]=10^{-pH}$

$[H^+]=10^{-6.87}=1.35 \times 10^{-7}\ M$

HA dissociated as:

$HA \leftrightharpoons H^+ + A^{-}$

(0.00045 - x) x x

[HA] at equilibrium = (0.00045 - x) M

x = $1.35 \times 10^{-7}\ M$

$Ka = \frac{[H^+][A^{-}]}{[HA]}$

$Ka = \frac{(1.35 \times 10^{-7})^2}{0.00045 - 0.000000135}$

0.000000135 <<< 0.00045

$Therefore, Ka = \frac{(1.35 \times 10^{-7})^2}{0.00045 } = 4.04 \times 10^{-11}$

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2 years ago

Which of these is an ionic compound? NO2 LiCl SO3 CO

Pavlova-9 [17]

It is "LICI" I believe. I could be wrong please let me know if I am wrong.

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3 years ago

Read 2 more answers

When aqueous ammonia is added to a solution containing Bi3+ and Cu2+ cations, ____________ occurs. A. Reduction to black bismuth

MissTica

Answer:

C. Precipitation of white bismuth hydroxide.

Explanation:

When aqueous ammonia is added to a solution that has Bi3+ and CU2+ cations, what we would have as a chemical result is the precipitation of white Bismuth hydroxide.

The chemical reaction for this can be written as,

Bi3+ + 2NH3 + 3H2O ⇌ Bi(OH)3(s) + 3NH4

Thank you!

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2 years ago

What is the density of an unknown substance that has a mass of 30 g and a volume of 10mL? a. 300 g/mL b. 30 g/mL c.3 g/mL d.1 g/

balu736 [363]

Answer:

the answer is 3g/cm3 I am pretty sure

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2 years ago

Explain the arrangement of particles in solids, liquids and gases.​

Explain the arrangement of particles in solids, liquids and gases.