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3 years ago

Dryers work with forced_____.One word answer please

Chemistry

2 answers:

olga2289 [7]3 years ago

8 0

(static) electricity

Zina [86]3 years ago

7 0

Answer:

electricity

Explanation:

I'm not 100% sure though

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(2 pts) The solubility of InF3 is 4.0 x 10-2 g/100 mL. a) What is the Ksp? Include the chemical equation and Ksp expression. MW

Aleonysh [2.5K]

Answer:

a) Ksp = 7.9x10⁻¹⁰

b) Solubility is 6.31x10⁻⁶M

Explanation:

a) InF₃ in water produce:

InF₃ ⇄ In⁺³ + 3F⁻

And Ksp is defined as:

Ksp = [In⁺³] [F⁻]³

4.0x10⁻²g / 100mL of InF₃ are:

4.0x10⁻²g / 100mL ₓ (1mol / 172g) ₓ (100mL / 0.1L) = 2.3x10⁻³M InF₃. Thus:

[In⁺³] = 2.3x10⁻³M InF₃ × (1 mol In⁺³ / mol InF₃) = 2.3x10⁻³M In⁺³

[F⁻] = 2.3x10⁻³M InF₃ × (3 mol F⁻ / mol InF₃) = 7.0x10⁻³M F⁻

Replacing these values in Ksp formula:

Ksp = [2.3x10⁻³M In⁺³] × [7.0x10⁻³M F⁻]³ = 7.9x10⁻¹⁰

b) 0.05 moles of F⁻ produce solubility of InF₃ decrease to:

7.9x10⁻¹⁰ = [x] [0.05 + 3x]³

Where x are moles of In⁺³ produced from solid InF₃ and 3x are moles of F⁻ produced from the same source. That means x is solubility in mol / L

Solving from x:

x = -0.018 → False solution, there is no negative concentrations.

x = 6.31x10⁻⁶M → Right answer.

Thus, solubility is 6.31x10⁻⁶M

3 0

3 years ago

Which of the following statements about Bohr's model of the atom is true? Bohr's model explains the chemical behavior of all ato

dsp73

I believe the answer is "Bohr's model explains the chemical behavior of all atoms."

3 0

3 years ago

Read 2 more answers

What systems might not work right when you have a cold

Vsevolod [243]

Answer:

hello :3

A cold is a contagious upper respiratory infection that affects your nose, throat, sinuses and trachea (windpipe).

Explanation:

have a nice day :3

5 0

2 years ago

How would you prepare a 1 L solution of 3 M MgO?

oksano4ka [1.4K]

Answer: 175.35g

Explanation: A 3 M solution has 3 moles of solute per litre.

The mass of one mole of NaCl equals the MW of NaCl MW = 35.45 + 23 =58.45 g/mol

The mass of 3 moles is 58.45 g/mol ×3 mol=175.35 g NaCl or 200 g rounded to one sigfig.

8 0

3 years ago

Match the following associations. 1. + ΔHexothermic endothermic 2. E2 < E¹exothermic endothermic 3. energy is absorbed exothe

Alisiya [41]

Explanation:

When heat is absorbed by reactants in a chemical reaction then the reaction is known as endothermic reaction.

Whereas when heat is released by reactants in a chemical reaction then the reaction is known as exothermic reaction.

1. When $\Delta H$ is positive then it means heat is absorbed by reactants and reaction is endothermic.

2. When $E_{2} < E_{1}$ , this means energy of products is less than the energy of reactants. Therefore, it is exothermic in nature.

3. When energy is absorbed then reaction is endothermic.

4. When $E_{2} > E_{1}$ , this means energy of products is greater than the energy of reactants. Therefore, it is endothermic in nature.

5. When [tex]\Delta H is negative then it means heat is released by reactants and reaction is exothermic.

4 0

3 years ago

Dryers work with forced_____.One word answer please ​

Dryers work with forced_____.One word answer please