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malfutka [58]
3 years ago
15

The 50:50 mixture of aspirin (Lit. MP: 135-136 oC) and 4-bromobenzoic acid (Lit. MP: 252-254 oC) will have the melting point in

the range of:______.
Chemistry
1 answer:
Anastasy [175]3 years ago
6 0

Answer:

193.5-195 °C.

Explanation:

Hello!

In this case, since the mixture is 50:50, we can infer that an average may be used to compute the required range; thus, we first compute the the inner limit by using 135 °C and 252 °C:

\frac{135+252}{2} =193.5\°C

And the upper limit:

\frac{136+254}{2} =195\°C

Thus, the average melting point would be around 193.5-195 °C.

Best regards!

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The compound cisplatin, Pt(NH3)2Cl2, has been studied extensively as an antitumor agent.___K2PtCl4 (aq) + ___NH3 (aq)  ___Pt(NH
Lostsunrise [7]

Mass of cisplatin can be made : 144.6 g

<h3>Further explanation</h3>

Given

Reaction(unbalanced)

K2PtCl4 (aq) + ___NH3 (aq)  ___Pt(NH3)2Cl2 (s) + ___KCl (aq)

200 g of K2PtCl4

Required

mass of cisplatin  Pt(NH3)2Cl2

Solution

Balanced equation

K₂PtCl₄ (aq) + 2NH₃ (aq) ⇒Pt(NH₃)₂Cl₂ (s) + 2KCl (aq)

mol of K₂PtCl₄(MW=2.39+195+4.35.5=415 g/mol) :

mol = mass : Mw

mol = 200 : 415

mol = 0.482

From equation, mol ratio K₂PtCl₄ : Pt(NH₃)₂Cl₂ = 1 : 1, so mol Pt(NH₃)₂Cl₂ = 0.482

Mass of cisplatin Pt(NH₃)₂Cl₂(MW=195+2.14+6.1+2.35.5=300 g/mol) :

mass = mol x MW

mass = 0.482 x 300

mass = 144.6 g

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A substance is composed of only one kind of atom cannot be separated into simpler substances are converted into another substanc
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Answer:

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Answer:

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Explanation:

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