D. all of these
Explanation:
All of given choices are the physical properties of the gold as given by the table.
Color is also a physical property.
Ionization potential and electronegativity are chemical properties of the metal.
The physical property of a substance tells us everything about a substance when no change is occurring to it.
Such properties are observed with our sense or instruments or pieces of apparatus.
- Examples are color of matter, state of matter, odor, taste, density, boiling point, melting point, solubility, hardness, texture etc
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Chemical properties brainly.com/question/2376134
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Answer:
92.0 torr/min.
Explanation:
- For the reaction: <em>2NO(g) + Cl₂(g) → 2NOCl(g).</em>
∵ The rate of the reaction = - 1/2(ΔP)NO/Δt = - (ΔP)Cl₂/Δt = 1/2(ΔP)NOCl/Δt.
∵ (ΔP)NO/Δt = - 184 torr/min.
<em>∴ The rate of change of the total pressure in the vessel = - 1/2(ΔP)NO/Δt</em> = (- 1/2)(- 184 torr/min) = <em>92.0 torr/min.</em>
Strong acid: An acid which dissociates totally in water and produces a massive amount of hydrogen ions. e.g. HCl. Weak acid: An acid which dissociates partially in water and produces a small amount of hydrogen ions. e.g. CH3COOH.
<h3>When a solution of vulnerable monoprotic acid is titrated in opposition to a strong base is half neutralization point pH is equal to?</h3>
Reason : At half equivalence point, it will form acidic buffer at its most capacity where [acid]`=`[salt]. Assertion : In a titration of vulnerable monoprotic acid with robust base, the `pH` at the half of equivalent factor is `pK_(a).
<h3>When a susceptible acid is titrated with a robust base the pH at the equivalence point?</h3>
In the case of a weak acid versus a sturdy base, the pH is now not impartial at the equivalence point. The answer is fundamental (pH ~ 9) at the equivalence point.
Learn more about acids here:
<h3>
brainly.com/question/13255573</h3><h3 /><h3>#SPJ4</h3>
Answer: 1.5mol NH3
Explanation: 1N2+3H2= NH3
0.5 mol N2x 3NH3/1molN2= 0.5x3= 1.5mol NH3
<span>A chemical change has occurred creating a precipitate.
Just had that question on a quiz. XP
Hope I helped :)</span>