Hello can anyone help?

Chemistry

2 answers:

e-lub [12.9K]3 years ago

8 0

Answer:

A ) 1, 2 and 3

Explanation:

1 ) is correct because,

K donates 1 electron

F gain 1 electron from K.

If donating and gaining of electrons takes place between two electron, then type of compound formed is ionic.

2 ) is correct because,

K + F -----> KF

3 ) is correct because,

KF is soluble in cold water; very soluble in hot water.

Andre45 [30]3 years ago

6 0

Answer:

A ) 1, 2 and 3

1 ) is correct because,

K donates 1 electron

F gain 1 electron from K.

If donating and gaining of electrons takes place between two electron, then type of compound formed is ionic.

2 ) is correct because,

K + F -----> KF

3 ) is correct because,

KF is soluble in cold water; very soluble in hot water.

You might be interested in

The concentration of ag+ in a solution saturated with ag2c2o4(s) is 1.7 × 10-4 m. calculate ksp for ag2c2o4.

Gelneren [198K]

<span>Silver oxalate dissociation equation is following:
</span><span>
Ag</span>₂C₂O₄(s) ⇄ 2Ag⁺(aq) + C₂O₄²⁻(aq)

According to reaction follows next stoichiometric ratio:

[Ag⁺] : [C₂O₄²⁻] = 2 : 1

[C₂O₄²⁻] = [Ag⁺] / 2

[C₂O₄²⁻] = (1.7×10⁻⁴)/2 = 8.5×10⁻⁵ M

So, solubility product constants for silver oxalate is:

Ksp = [Ag⁺]² x [C₂O₄²⁻]

Ksp = [1.7×10⁻⁴]² x [8.5×10⁻⁵]

Ksp = 2.46×10⁻¹²

4 0

3 years ago

A scientist thinks she has discovered a new element. She took some samples to her colleagues and they performed some tests. Here

nirvana33 [79]

Answer:

<em><u>Proton number of the supposed discovery debunked the theory.</u></em>

Explanation:

Proton number of an element is also its atomic number.

For the element in question to have had a proton number that wasn't 119, it could not have been a new element.

Furthermore, the characteristics described (proton number especially) describe exactly the Germanium element.

I believe this was helpful.

6 0