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Leya [2.2K]
3 years ago
8

Im stuck on these two problems

Chemistry
1 answer:
Vikki [24]3 years ago
3 0

1st figure

answer

c)12

2nd

answer

c)28

#brianliest

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A gaseous compound has a mass of 8.00 g at 2.81 atm and 300. K in a 1.00 L container.
Maurinko [17]

Answer:

The question asks for moles, which can be obtained from P-V-T data using the ideal gas

equation: n =

RT

PV .

Now use the rearranged gas law to determine the number of moles in the sample:

!

n = PV

RT = (6.47 x 105 Pa)(5.65 x 10-4m3

)

(8.314 J

mol K )(21.7 + 273.15 K) = 0.149 mol.

All conditions except the pressure and volume are fixed, so P1V1 = P2V2 can be used: 3.62 L

101kPa

(647 kPa)(0.565 L)

2

1 1

2 = =

P

PV V

Explanation:

4 0
3 years ago
Read 2 more answers
When a liquid is heated, the temperature stops rising at the liquid’s ____________________.
Agata [3.3K]

Hi there,

the answer to the blank is: boiling point

When a liquid is heated, the temperature stops rising at the liquid's boiling point.

Hope this is correct :)

Have a great day

5 0
3 years ago
Read 2 more answers
Pls help ——————————<br> —————-
Marina86 [1]

Answer:

X has 9 Electrons, 9 Protons and 10 Neutrons

X is Fluorine

Explanation:

19 in X is Nucleon number

So, if you minus 19 by 9 down there (which is proton number) you'll get 10 (Neutron number).

Now, Proton = Electron. That's why Electron is 9 too. I figured that X is Fluorine bcuz it has 9 Electrons. If you venture around in the periodic table, fluorine is the ninth element innit.

hope this helps ya \(^o^)/

7 0
3 years ago
Ayye yoo who want to answer this question ill give brainlist :)
frez [133]

Answer:

noble-gas notation

Explanation:

5 0
2 years ago
Which describes Lithium chloride
Rasek [7]

Answer:

Lithium chloride is a white solid hygroscopic soluble in water.

8 0
3 years ago
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