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3 years ago

Help ASSSAPPPP I WILL MARK BRAINLIEST. What is the outer electron configuration for tin?

Chemistry

2 answers:

Sunny_sXe [5.5K]3 years ago

7 0

Tin atoms have 50 electrons and the shell structure is 2.8. 18.18. 4.

I hope this helps!

VikaD [51]3 years ago

4 0

Answer:

hope this helps!

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True or false, The universal gas constant, R, is . 0821 when we use mm Hg as our unit for pressure

ludmilkaskok [199]

Answer:

This is true.

Explanation:

R should be 0.0821

Good luck!

5 0

3 years ago

In pure water at 25 °C, the concentration of a saturated solution of CuF2 is 7.4 × 10−3 M. If measured at the same temperature,

Romashka-Z-Leto [24]

Answer:

The concentration of a saturated solution of CuF₂ in aqueous 0.20 M NaF is 4.0×10⁻⁵ M.

Explanation:

Consider the ICE take for the solubility of the solid, CuF₂ as:

CuF₂ ⇄ Cu²⁺ + 2F⁻

At t=0 x - -

At t =equilibrium (x-s) s 2s

The expression for Solubility product for CuF₂ is:

$K_{sp}=\left [ Cu^{2+} \right ]\left [ F^- \right ]^2$

$K_{sp}=s\times {2s}^2$

$K_{sp}=4s^3$

Given s = 7.4×10⁻³ M

So, Ksp is:

$K_{sp}=4\times (7.4\times 10^{-3})^3$

Ksp = 1.6209×10⁻⁶

Now, we have to calculate the solubility of CuF₂ in NaF.

Thus, NaF already contain 0.20 M F⁻ ions

Consider the ICE take for the solubility of the solid, CuF₂ in NaFas:

CuF₂ ⇄ Cu²⁺ + 2F⁻

At t=0 x - 0.20

At t =equilibrium (x-s') s' 0.20+2s'

The expression for Solubility product for CuF₂ is:

$K_{sp}=\left [ Cu^{2+} \right ]\left [ F^- \right ]^2$

$1.6209\times 10^{-6}={s}'\times ({0.20+2{s}'})^2$

Solving for s', we get

s' = 4.0×10⁻⁵ M

The concentration of a saturated solution of CuF₂ in aqueous 0.20 M NaF is 4.0×10⁻⁵ M.

3 0

4 years ago

What is an advantage of series circuits?

Zanzabum

The answer you are looking for is A: Adding more batteries will increase the current

Since you have a circuit in series, that means that all of the bulbs would be connected to one wire. If you were add more batteries to that one wire, you would end up with a greater flow of energy throughout the bulbs/wire

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4 years ago

Read 2 more answers

Write a hypothesis: What is the mole ratio of the cation and the anion in a precipitate?

tankabanditka [31]

Answer:

The mole ratio of the cation and the anion in a precipitate is a simple fraction. ( im sorry if this dosent help a lot.)

Explanation:

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3 years ago

What is the value of 100 ºC on the Kelvin scale

KIM [24]

Boiling point- 100 ℃, or 373.15K

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3 years ago