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Juli2301 [7.4K]
3 years ago
9

Need help ASAP please

Chemistry
2 answers:
Brums [2.3K]3 years ago
7 0
1. Endothermic; increases
2. Exothermic; decreases
3. Endothermic;increases
4. Exothermic; decreases
5. Endothermic; increases
GuDViN [60]3 years ago
6 0

Answer:Melting can create steam, kind of like a nukeular plant exept no nukulear rods

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AlekseyPX
Crystaline solids have specific geometerical shape so the answer is false
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4 years ago
The active ingredient in aspirin is acetylsalicylic acid. A 2.51-g sample of acetylsalicylic acid required 27.36 mL of 0.5106 M
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Hey there!

mass of sample = 2.51 g of Aspirin

Number of moles of base  ( NaOH ) :

M*V = 27.36*0.5106 = 13.9700 mmol of base

M*V = 13.68*0.516 = 7.05888 mmol of acid

pKa calculation:

pH = pKa + log(A-/HA)

3.48 = pKa + log(7.05888 / (13.9700 -7.05888))

Pka =3.49 -  log(7.05888 / (13.9700 -7.05888))

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Molar mass calculation:

molar mass = mass/mol

(2.51)/(13.9700 *10⁻³) =

molar mass 180 g/mol approx


Hope that helps!

4 0
3 years ago
Calculate the molecular mass or formula mass in any of CH4 NO2 SO3 C6H6 Nal
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Answer:

Ch4 Is an ion so the molecule yes 5

Explanation:

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3 years ago
Electromagnets are created using charged and insulated wire wrapped around a piece of iron. uncharged and insulated wire wrapped
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I think the correct answer would be <span>charged and insulated wire wrapped around a piece of iron. The charge in the wire would make magnetic fields through the aid of the magnetic properties of iron. Hope this helps. Have a nice day.</span>
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