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Phoenix [80]
3 years ago
10

How many moles of argon are contained in 58 L of At at STP?

Chemistry
1 answer:
Harman [31]3 years ago
8 0

Answer:

n = 2.58 mol

Explanation:

Given data:

Number of moles of argon = ?

Volume occupy = 58 L

Temperature = 273.15 K

Pressure = 1 atm

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

1 atm × 58 L = n × 0.0821 atm.L/ mol.K × 273.15 K

58 atm.L = n × 22.43 atm.L/ mol.

n = 58 atm.L / 22.43 atm.L/ mol

n = 2.58 mol

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zvonat [6]

Answer:

The correct answer is: 2M Al3+(aq) and 6 M NO3-(aq)

Explanation:

Step 1: Data given

2.0 M Al(NO3)3

Step 2:

Al(NO3)3 in water will dissociate as following:

Al(NO3)3 → Al^3+ + 3NO3^-

For 1 mol of Al(NO3)3 we will have 1 mol of Al^3+ and 3 moles of NO3^-

We know that the molarity of Al(NO3)3 = 2.0 M, this means 2.0 mol/ L

The mol ratio Al(NO3)3 and Al^3+ is 1:1 so the molarity of Al^3+ is<u> 2.0 M</u>

The mol ratio Al(NO3)3 and NO3^- is 1:3 so the molarity of NO3^- is<u> 6.0M</u>

The correct answer is: 2M Al3+(aq) and 6 M NO3-(aq)

3 0
3 years ago
High tempature and pressure over time will cause what in rock layers​
Firlakuza [10]

Answer:

Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock. The parent rock can be either sedimentary, igneous, or even another metamorphic rock. The word "metamorphic" comes from Greek and means "To Change Form"

Explanation:

4 0
3 years ago
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PLEASE LHELP
rosijanka [135]

Answer:

12

Explanation:

6 moles multiplied 2 atoms of O2

That gives 12 atoms

8 0
3 years ago
Which shell would be complete with 10 electrons?
nlexa [21]

Answer:

The answer to your question is letter d

Explanation:

If we remember there is a limit of electrons that can be place in a sublevel

Sublevel s only accept 2 electrons

Sublevel p only accept 6 electrons

Sublevel d only accept 10 electrons

Sublevel f only accept 14 electrons

This is in agreement wth the levels of energy, that only accept a determine number of electrons

Level               Sublevel               # of electrons

1                             s                                2

2                           s and  p                      8      (2 + 6)

3                           s, p and d                  18      (2+6+10)

4                            s, p, d, f                     32     (2+6+10+14)

5                            s, p, d,f                      32     (2+6+10+14)

6                            s, p, d                        18      (2+6+10)

7                             s, p                            8        (2+6)

3 0
3 years ago
Idk this question and I need help
Nadusha1986 [10]

Answer:

12 ML

Explanation:

BECAUSE THE WATER ROSE 12 ML SO THE KEY IS 12 ML

8 0
3 years ago
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