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Finger [1]
3 years ago
9

A sample of argon gas collected at a pressure of 0.918 atm and a temperature of 279 K is found to occupy a volume of 719 millili

ters. How many moles of Ar gas is in the sample?
mol
Chemistry
1 answer:
babymother [125]3 years ago
3 0
Yeah i have 0 idea i’m sorry.
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butalik [34]
Its Southern Hemisphere counterpart, marking the most southerly position at which the Sun can be directly overhead, is the Tropic of Capricorn. These tropics are two of the five major circles of latitude that mark maps of the Earth, besides the Arctic and Antarctic Circles and the Equator.
6 0
3 years ago
Please help I have no idea how to solve this
icang [17]
What are we solving ?
3 0
2 years ago
Need help with chemistry question
luda_lava [24]

Answer:

See explanation

Explanation:

In this case, we have to check two variables:

1) The leaving group

2) The carbon bonded to the leaving group.

Let's check one by one:

<u>2-chloro-3-methylbutane</u>

<u />

In this molecule, the leaving group is "Cl", the carbon bonded to the leaving group has two neighbors. Therefore, we have a <u>secondary substrate.</u>

<u>1-phenylpropan-1-ol</u>

<u />

In this molecule, the leaving group is "OH", the carbon bonded to the hydroxyl group has two neighbors also. So, we have a <u>secondary substrate.</u>

<u>(E)-pent-3-en-2-yl 4-methylbenzenesulfonate</u>

<u />

In this case, the leaving group is "OTs" (Tosylate), the carbon bonded to the tosylate group has as a neighbor a double bond. Therefore, we have an <u>allylic substrate.</u>

<u>3a-bromooctahydro-1H-indene</u>

<u />

In this molecule, the leaving group is "Br", the carbon bonded to the bromine has three neighbors. So, we have a <u>tertiary substrate.</u>

<u>1-iodo-3-methylbutane</u>

<u />

In this molecule, the leaving group is "I", the carbon bonded to the iodide has only one neighbor. So, we have a <u>primary substrate.</u>

<u />

See figure 1

I hope it helps!

<u />

4 0
3 years ago
Part B<br> [H3O+] = 2 x 10-6 M<br> Express your answer using one decimal place.
AVprozaik [17]

Answer:

pH = 5.7

Explanation:

<em>Which is the pH of the solution?</em>

The pH is a measurement widely used in chemistry in quality assurance of products and another analysis. Is defined as the -log [H3O+]. That means, the pH of the solution that is [H3O+] = 2x10-6 M is:

pH = -log [H3O+]

pH = -log [2x10-6 M]

<h3>pH = 5.7</h3>
5 0
3 years ago
What is the name of the element? Protons: 92 Neutrons: 146
Liono4ka [1.6K]
Uranium. The atomic number of uranium is 96, meaning it has 96 protons. The mass number is 238. The mass number is the number of protons plus neutrons, so 238 - 96 = 146 neutrons.
4 0
3 years ago
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