3 years ago

Some compounds, like carbon dioxide, are gaseous at room temperature, while others are solid at room temperature. Why is this?

Chemistry

1 answer:

OverLord2011 [107]3 years ago

3 0

Compounds that are gases at room temperature are covalent bonds (nonmetal + nonmetal).

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Calculate the concentration (M) of sodium ions in a solution made by diluting 25.0 mL of a 0.765 M solution of sodium sulfide to

Yuri [45]

Given:

Concentration of Na₂S = 0.765 M

Volume of Na₂S solution = 25.0 ml = 0.025 L

Final total volume = 225 ml = 0.225 L

To determine:

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Explanation:

# moles of Na₂S = 0.765 * 0.025 = 0.0191 moles

Based on the atomic stoichiometry of Na₂S-

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conc of Na⁺ ions = 0.0382 moles/ 0.225 L = 0.169 M

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A student is performing an experiment to study thermodynamics. The student mixes citric acid and sodium bicarbonate in a calorim

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