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ELEN [110]
3 years ago
9

Based on the Phase Change Graph below, what is the Melting Point for this point substance?

Chemistry
1 answer:
Marina CMI [18]3 years ago
4 0

Answer:

Where is the phase melting graph? Can't seem to find it

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The answer is C
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Help! This is due tomorrow and my teacher didn't explain this topic very well so I'm totally lost!
nydimaria [60]

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Explanation:

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6 0
3 years ago
Calculate the molarity of the acid solution.<br>H2SO4(aq) with a pH of 2.
Lena [83]

Concentration "molarity" of H₂SO₄ in this solution:

5 × 10⁻³ mol / dm³.

<h3>Explanation</h3>

What's the concentration of H⁺ ions in this solution?

[\text{H}^{+}] = 10^{-\text{pH}},

where [\text{H}^{+}] is in the unit mol / dm³.

\text{pH} = 2

[\text{H}^{+}] = 10^{-2} \;\text{mol}\cdot\text{dm}^{-3}.

What's the concentration "molarity" of H₂SO₄ in this solution?

Sulfuric acid H₂SO₄ is a strong acid. Note the subscript "2". Each mole of this acid dissolves in water to produce two moles of H⁺ ions. It takes only \dfrac{10^{-2}}{2} = 5 \times 10^{-3}\;\text{mol}\cdot\text{dm}^{-3} of H₂SO₄ to produce twice as much H⁺ ions.

As a result, the <em>molarity</em> of H₂SO₄ is 5 × 10⁻³ mol / dm³ or 0.005 M.

3 0
3 years ago
A _____________reaction mechanism involves loss of a leaving group, formation of a ________ followed by the removal of a proton
Molodets [167]

Answer:

The correct answer is Option C (E1) and Option B (carbocation).

Explanation:

  • Intramolecular immunity idols are considered as that of the formation mechanism with E1 responses or reactivity.
  • Reactants with E1 were indeed obligations of both parties, meaning that an E1 reaction was conducted thru all the two stages known as ionization but rather deprotonation. Involves the absence of either an aromatic ring, a carbocation has been generated throughout the ionization solution.

Some other possibilities offered aren't relevant to the procedure outlined. So the above alternative is accurate.

7 0
3 years ago
Which element has the greatest density at stp? 1. carbon 2. copper 3. chlorine 4. calcium
spin [16.1K]
1 .......................
7 0
3 years ago
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