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Jlenok [28]
4 years ago
9

Sodium and ____ are the two primary electrolytes.Question 5 options:

Chemistry
1 answer:
Pachacha [2.7K]4 years ago
5 0

C, potassium. Hope this helps.

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What volume of a 0.240 m solution of barium nitrate is needed to prepare 0.500 l a  solution that is 0.0800 m in nitrate ion?
Doss [256]

Formula for Barium Nitrate = Ba(NO3)2

Thus based on stoichiometry:

1 mole of Ba(NO3)2 contains 2 moles of NO3-

Therefore, concentration of nitrate ion NO3- would be = 2*0.240 = 0.480 M

Use the relation:

V1M1 = V2M2

V1 = V2M2/M1 = 0.500 L * 0.0800/0.480 = 0.0833 L

Thus, 0.0833 L or 83.3 ml solution of Ba(NO3)2 would be required.


4 0
3 years ago
Calculate the volume of 0.684mol of carbon dioxide at s.t.p. show working
solong [7]

Answer: The volume of 0.684 mol of carbon dioxide at s.t.p. is 15.3 L

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = ?

n = number of moles = 0.684

R = gas constant = 0.0821Latm/Kmol

T =temperature =273K   (at STP)

V=\frac{nRT}{P}

V=\frac{0.684\times 0.0821L atm/K mol\times 273K}{1atm}

V=15.3L

Thus the volume of 0.684 mol of carbon dioxide at s.t.p. is 15.3 L

6 0
3 years ago
the pressure of 1 mol of gas is decreased to 0.05 atm 273.k. what happens to the molar volume of the gas under these conditions?
svp [43]

The molar volume of the gas : V = 447.993 L

<h3>Further explanation</h3>

Given

n = 1 mol

P = 0.05 atm

T = 273 K

Required

The molar volume

Solution

Ideal gas law :

PV=nRT

V = nRT/P

Input the value :

V = 1 x 0.08205 x 273 / 0.05

V = 447.993 L

6 0
3 years ago
When a calcium atom becomes an ion?
Alecsey [184]
It looses 2 electrons, when ions come together to form and ionic bond they always join in numbers that cancel out the positive and negative charges .


  -hope this have helped you well .
8 0
3 years ago
isopropyl alcohol is a three carbon molecule with an -OH group attached to the middle carbon atom. draw the lewis structure show
aleksklad [387]

Answer:

The answer to your question is in the attachment

Explanation:

I draw it.

4 0
4 years ago
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