Its a greenhouse gas that traps heat in the atmosphere, contributing to climate change.<span>
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The statement "When using the ideal gas constant value, R = 0.0821, in an ideal gas law calculation, the units of temperature may be expressed as degrees Celsius or <span>Kelvin" is false. It must be Kelvin only not celsius</span>
Isotopes of atoms d. have the same number of protons but a different number of neutrons.
<u>Given:</u>
Concentration of Na₂S = 0.765 M
Volume of Na₂S solution = 25.0 ml = 0.025 L
Final total volume = 225 ml = 0.225 L
<u>To determine:</u>
The concentration of Na+ ions
<u>Explanation:</u>
# moles of Na₂S = 0.765 * 0.025 = 0.0191 moles
Based on the atomic stoichiometry of Na₂S-
# moles of Na⁺ ions = 2*0.0191 = 0.0382 moles
conc of Na⁺ ions = 0.0382 moles/ 0.225 L = 0.169 M
Ans: [Na⁺] = 0.169 M
