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2 years ago

Write a net ionic equation for the reaction of Iron(III) Chloride and Potassium Thiocyanate.

Chemistry

1 answer:

zysi [14]2 years ago

3 0

FeCl3 + 6KSCN -------> K3[Fe(SCN)6] + 3KCl

Fe³⁺ + 3Cl⁻ +6K⁺ +6SCN⁻ -----> 3K⁺ + [Fe(SCN)6]³⁻ + 3K⁺ +3Cl⁻

A net ionic equation:

Fe³⁺ + 6SCN⁻ --------> [Fe(SCN)6]³⁻

You probably need this equation in the different form

FeCl3(aq) + 3KSCN(aq) -------> Fe(SCN)3(s) + 3KCl(aq)

Then net equation:

Fe³⁺(aq) + 3SCN⁻(aq) -----> Fe(SCN)3(s)

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How many moles of water are produced from 40.0 g of C2H6?

inn [45]

Answer:

4 moles of water

Explanation:

this is a combustion reaction, so the balanced equation is: 2C2H6 + 7O2 → 4CO2 + 6H2O.

the molar mass of C2H6 is 30.07g, so 40.0 g of C2H6 is 1.33 moles of C2H6.

mole ratio of H2O to C2H6 is 6/2, or 3.

1.33 moles C2H6 * 3 moles H2O/1 mole C2H6 = 4 moles H2O

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2 years ago

Which statement best describes one way that plate tectonics causes change

Romashka-Z-Leto [24]

Answer: Plate tectonics was Wegener's theory that Earth's continents rest on sections of Earth's crust that drift together and apart over time; continental drift is a hypothesis describing how plate tectonics might happen.

Explanation: Tectonic plate movement is a long-term environmental change.

7 0

1 year ago

A mixture of oxygen hydrogen and nitrogen gas is exerts a total pressure of 282K PA if the partial pressures of oxygen and hydro

sergiy2304 [10]

Glgggggggggggggggggggggggg

7 0

3 years ago

Read 2 more answers

What is the name for Cl₇Br₄ *

Margarita [4]

Answer: no se wey jaja que le pusiste tu ?

Explanation:

4 0

2 years ago

If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?

krok68 [10]

Answer:

$\large\boxed{\large\boxed{0.64M}}$

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

$Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}$

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

$\text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}$

Substitute and solve for the molarity of the diluted solution:

$250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M$

8 0

2 years ago