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Neko [114]
3 years ago
9

Please help i'm being timed

Chemistry
1 answer:
Bad White [126]3 years ago
5 0

a. KCl = strong electrolyte

b. CCl4 = non-electrolyte

c. LiCl = strong electrolyte

d. Na2SO4 = strong electrolyte

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The oxidation number of N inNa+​
Juliette [100K]

Answer:

there is acronym for the oxidation and reduction

OilRig

Oxidation

is

losing

Reduction

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gaining

i hope that helps (:

6 0
4 years ago
Which of the following demonstrates a poor internal control procedure?
Alex_Xolod [135]

Answer: The bookkeeper makes cash deposits and records journal entries related to cash, while the treasurer prepares the bank reconciliation.

Explanation: The bookkeeper in an organization is the person in charge of records keeping, his basic task is to keep financial records and therefore the bookkeeper has no business handling physical cash in an organization.

The financial secretary on the hand is in charge saving cash income and withdrawal of cash from an organization, this is done with the organization's accountant approval.

5 0
3 years ago
1) If you needed to make 250. mL of a 1x TBE buffer, how much of each of the following would you use: solid Tris base (121.1 g/m
vekshin1

Answer:

for 1 Litre(1000 ml) of  1x TBE

10.8 g Tris

5.5 g Boric acid

4 ml 0.5 M EDTA (pH 8.0)

900 ml distilled water

Adjust volume to 1 Liter.

<u>so for 250 ml divide everything by 4</u>

2.7 g Tris

1.37 g Boric acid

1 ml 0.5 M EDTA (pH 8.0)

225 ml distilled water

Adjust volume to 250 Ml

4 0
3 years ago
What is the difference between a heterogeneous mixture and homogeneous mixture?
Fiesta28 [93]
A homogeneous mixture has the same uniform appearance and composition throughout


A heterogeneous mixture consists of visibly different substances or phases.
7 0
3 years ago
Both covalent-network solids and ionic solids can have melting points well in excess of room temperature, and both can be poor c
Reil [10]

Answer:

1. Ionic solids dissolve in water.

2. Ionic solid is a better conductor compared to covalent solid.

Explanation:

1. Ionic solids dissolves in water because the water molecules hydrate the ions.When ionic compounds dissolve in water, they break apart into the ions that make them up through a process called dissociation.

Whereas covalent  solids don't dissolve in water, instead making a separate layer on the water's surface.

For example table salt that is NaCl is an ionic solid.When we add the salt in water it completely dissolves in water and disappears on the other hand oil is a covalent solid, when we add it in water it does not dissolve and forms a layer on water surface.

2.Ionic solids conducts electricity when it dissolves in water. Because in aqueous form there are ions which conducts electricity.

But covalent solids does not conduct in any form neither in pure form nor in aqueous form because they are bond with shared electrons having no ions which conducts electricity.

3 0
3 years ago
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