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Kitty [74]
3 years ago
15

Tell Whether or not each equation is balanced

Chemistry
1 answer:
rodikova [14]3 years ago
8 0

2Fe(OH)3 → Fe2O3 + 3H2O

There are 2 iron atoms on the left, and 2 iron atoms on the right. There are 6 oxygen atoms on the left, and 6 oxygen atoms on the right. There are 6 hydrogen atoms on the left and 6 hydrogen atoms on the right.

This equation is balanced.


2Al(OH)3→ Al2O3+ 3H2O

There are 2 aluminum atoms on the left, and 2 aluminum atoms on the right. There are 6 oxygen atoms on the left, and 6 oxygen atoms on the right. There are 6 hydrogen atoms on the left and 6 hydrogen atoms on the right.

<span>This equation is balanced.</span>

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In a closed container, the vapor pressure of 10 mL of ethanol at 20 degrees C is 5.85 kPa. What is the vapor pressure of 20 mL o
natulia [17]

Answer:

{P_2}=2.925\ kPa

Explanation:

At same temperature and same number of moles, Using Boyle's law  

{P_1}\times {V_1}={P_2}\times {V_2}

Given ,  

V₁ = 10 mL

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P₁ = 5.85 kPa

P₂ = ?

Using above equation as:

{P_1}\times {V_1}={P_2}\times {V_2}

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{P_2}=\frac{{5.85}\times {10}}{20}\ kPa

{P_2}=2.925\ kPa

6 0
3 years ago
What occurs during electrolysis? Low-energy reactants become high-energy products. High-energy reactants become low-energy produ
Nonamiya [84]

Answer:

Low-energy reactants become high-energy products.  

Explanation:

In electrolysis, you are forcing a reaction to occur that otherwise wouldn't happen.

You are pumping energy into the system and converting low-energy reactants into high-energy products.

B is wrong. Nature tends  to run downhill energetically, so high-energy reactants tend to form low-energy products spontaneously.

C and D are wrong. If an element is unreactive, it stays unreactive, and vice versa. You can't change the nature of an element.

4 0
4 years ago
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