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3 years ago

Write the net ionic equation for the precipitation of calcium sulfide from aqueous solution

Chemistry

1 answer:

Fantom [35]3 years ago

7 0

Answer:

Answer is Ca2+(aq)+S2-(aq)=>CaS(s)

Explanation:

I hope it's helpful!

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When I2 and FeCl2 are mixed together, iodine (I) cannot replace chlorine (Cl) in the compound because iodine is lower on the per

andrezito [222]

The given statement is True.

This is single replacement reaction.

As reactivity decreases down the group,

Iodine is less reactive than Chlorine.

And so Iodine cannot replace chlorine from FeCl2.

I2 + FeCl2 ---> no reaction (Iodine is less reactive than chlorine)

7 0

3 years ago

Read 2 more answers

About the instruction that marko gave to hinano

Elden [556K]

Answer: he gave him a map of somewhere

Explanation:

3 0

3 years ago

Water vapor is not usually seen.

xeze [42]

Answer:

True

Explanation:

Water vapor is totally invisible.

Without it, there would be no clouds or rain or snow, since all of these require water vapor in order to form. All of the water vapor that evaporates from the surface of the Earth eventually returns as precipitation - rain or snow.

Helped by the One & Only #QUEEN aka #DRIPPQUEENMO

Hoped this helped! :)

5 0

3 years ago

In the Lewis structure for ICl2–, how many lone pairs of electrons are around the central iodine atom.

Stells [14]

Answer : The number of lone pairs of electrons around the central iodine atom are, 6 electrons

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The representation of valence electrons of an atom by dots around the symbol of an element is said to be the Lewis-dot symbol.

In the representation of Lewis-symbol, one electron dot must put on each side of the element symbol then paired the electrons.

The given molecule is, $ICl_2^-$

As we know that iodine ans chlorine has '7' valence electrons.

Therefore, the total number of valence electrons in $ICl_2^-$ = 7 + 2(7) + 1 = 22

According to Lewis-dot structure, there are 4 number of bonding electrons and 18 number of non-bonding electrons.

Hence, the number of lone pairs of electrons around the central iodine atom are, 6 electrons

3 0

3 years ago

Assuming the boiling point increased by 2 Â°C, what is the approximate molality of NaCl when the video ends? Kbp(water) = 0.512

makkiz [27]

Answer : The molality of NaCl is, 1.95 mol/kg

Explanation :

Formula used for Elevation in boiling point :

$\Delta T_b=i\times k_b\times m$

where,

$\Delta T_b$ = change in boiling point = $2^oC$

$k_b$ = boiling point constant for water = $0.512^oC/m$

m = molality

i = Van't Hoff factor = 2 (for electrolyte)

The dissociation $NaCl$ will be,

$NaCl\rightarrow Na^++Cl^{-}$

So, Van't Hoff factor = Number of solute particles = $Na^++Cl^{-}$ = 1 + 1 = 2

Now put all the given values in the above formula, we get:

$2^oC=2\times (0.512^oC/m)\times m$

$m=1.95mol/kg$

Therefore, the molality of NaCl is, 1.95 mol/kg

6 0

3 years ago