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antoniya
4 months ago
8

A metallic object holds a charge of −4.8 × 10−6 C. What total number of electrons does this represent? (e = 1.6 × 10−19 C is the

magnitude of the electronic charge.)
Chemistry
1 answer:
Anarel [2.9K]4 months ago
5 0

Answer:

n=3.0\times 10^{13}

Explanation:

Charge of one electron = -1.6\times 10^{-19}\ C

The formula for calculating charge is:

Charge=n\times q_e

Given that: Charge = -4.8\times 10^{-6}\ C

-4.8\times 10^{-6}=n\times (-1.6\times 10^{-19})

n=\frac{4.8\times 10^{-6}}{1.6\times 10^{-19}}=3.0\times 10^{13}

Total electrons, n = 3.0\times 10^{13}

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Rank the following chemical species from lowest absolute entropy (So) (1) to highest absolute entropy (5) at 298 K?
lorasvet [2795]

Answer:

Can you rank the following chemical substances in order of their absolute entropies (So) from lowest (1) to highest (5) at a temperature of 298 K?

a. Al (s)

b. H2O (l)

c. HCN (g)

d. CH3COOH (l)

e. C2H6 (g)

Explanation:

Entropy quantifies the level of disorder within a system.

In solids, the entropy is significantly lower compared to liquids and gases.

The typical order of entropy is:

solids < liquids < gases

In the substances listed, liquid water notably exhibits strong intermolecular hydrogen bonding.

This results in water having comparatively lower entropy.

Next in line is acetic acid.

Among the gaseous components, ethane has higher entropy than HCN due to its weaker intermolecular interactions.

HCN involves some hydrogen bonding.

Thus, the order of entropy is:

Al(s) < CH3COOH (l) < H2O(l) < HCN(g) < C2H6(g)

7 0
3 months ago
Is C3h8 an acid or base
Anarel [2989]
Propane

is classified as neutral, meaning it does not act as an acid or a base
.
7 0
2 months ago
Read 2 more answers
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