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Paraphin [41]
2 years ago
7

What is the melting point of tert-butanol? Besides using a heat lamp, what other options might there be for dispensing a given a

mount of tert-butanol? Could a different solvent such as ethanol be used instead?
Chemistry
1 answer:
damaskus [11]2 years ago
6 0

Answer:

For dispensing, weigh it out.

Yes, a different solvent such as ethanol could be used.

Explanation:

Besides using various methods for melting the <em>tert</em>-butanol in order to pour it out and measure a given volume, the <em>tert</em>-butanol could be weighed out in a beaker using a scale. Depending on the temperature of the laboratory, the <em>tert</em>-butanol could be a solid or a liquid/solid mixture.

In general, a different solvent such as ethanol could be used in place of <em>tert</em>-butanol as long as the solvent is a low molecular weight alcohol.

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Calculate the molar mass of a 2.89 g gas at 346 ml, a temperature of 28.3 degrees Celsius, and a pressure of 760 mmHg.
malfutka [58]

The molar mass of gas = 206.36 g/mol

<h3>Further explanation</h3>

In general, the gas equation can be written

\large{\boxed{\bold{PV=nRT}}}

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.082 l.atm / mol K

T = temperature, Kelvin

mass (m)= 2.89 g

volume(V) = 346 ml = 0.346 L

T = 28.3 C + 273 = 301.3 K

P = 760 mmHg=1 atm

The molar mass (M) :

\tt PV=\dfrac{m}{M}RT\\\\M=\dfrac{mRT}{PV}\\\\M=\dfrac{2.89\times 0.082\times 301.3}{1\times 0.346}\\\\M=206.36~g/mol

8 0
2 years ago
Eugenol is a molecule that contains the phenolic functional group. Which option properly identifies the phenol in eugenol
givi [52]

Answer:

Explanation:

Hello,

Among the options given on the attached document, since phenolic functional group is characterized by a benzene ring bonded with a hydroxyl group (C₆H₅OH) we can see that the first option correctly points out such description. Thus, answer is on the second attached picture. Other options are related with other sections found in eugenol that are not phenolic.

Best regards.

3 0
2 years ago
How many mm are equal to 4.75 x 10-2 m?
kherson [118]

Answer:

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Explanation:

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svlad2 [7]
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2 years ago
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A gold atom has a radius of 145 pm. If you could string gold atoms like beads on a thread, how many atoms would you need to have
dalvyx [7]
First we have to convert:145 pm = 145 * 10^(-12) m36 cm = 360 mm = 360 * 10^(-3) mn = 360 * 10^(-3) m / 145 * 10^(-12) m = = 360 * 10^(-3) * 10^(12) / 145 = = 2.482758621 * 10^(9) or:2,482,758,621 atoms.

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2 years ago
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