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garri49 [273]
3 years ago
6

Which statement is true?

Chemistry
1 answer:
dimulka [17.4K]3 years ago
6 0

Answer:

A I think

Explanation:

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The molar solubility of pbi2 is 1.5 103 m.
Vsevolod [243]

Answer: -

Concentration of PbI₂ = 1.5 x 10⁻³ M

PbI₂ dissociates in water as

PbI₂ ⇄ Pb²⁺ + 2 I⁻

So PbI₂ releases two times the amount of I⁻ as it's own concentration when saturated.

Thus the molar concentration of iodide ion in a saturated PbI₂ solution = [ I⁻] =

= 1.5 x 10⁻³ x 2 M

= 3 x 10⁻³ M

PbI₂ releases the same amount of Pb²⁺ as it's own concentration when saturated.

[Pb²⁺] = 1.5 x 10⁻³ M

So solubility product for PbI₂

Ksp = [Pb²⁺] x [ I⁻]²

=1.5 x 10⁻³ x (3 x 10⁻³)²

= 4.5 x 10⁻⁹

8 0
3 years ago
Most particles would travel____from their source to a screen that lit up<br> when struck.
quester [9]

Answer: in a straight path!

Explanation: hope this helps

5 0
2 years ago
Need help with Chemistry homework...
lesantik [10]

1. 3Fe + 202

2. 2Sr + 02

3. SN + 2NaOH

4. 2K + Br2

5. 2C8H18 + 25O2

6. 2Sb + 3I2

6 0
3 years ago
Which of the following are density labels?
shtirl [24]

Answer:

Kg/L , g/mL

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

7 0
3 years ago
Isotopes of the same element must have the same number of - a protons + neutrons. b neutrons. c electrons. d protons.
jenyasd209 [6]

Your answer is A....They have the same number of protons and neutrons, but a different number of electrons. They have the same number of protons and electrons, but a different number of neutrons. Different isotopes of an element have the same atomic number, but different mass numbers.....

4 0
3 years ago
Read 2 more answers
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