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gulaghasi [49]
3 years ago
5

When a pot of water has been boiling vigorously for several minutes, the bubbles that emerge from the liquid water are composed

of
1. air
2. water vapor
3. H2 gas and O2 gas in a 1:1 ratio
4. H2 gas and O2 gas in a 2:1 ratio
Chemistry
1 answer:
kumpel [21]3 years ago
7 0
Well, water is composed H2 gas and O2 gas in a 2:1 ratio, and the bubbles that form at the bottom of the pan is just the water changing from a liquid to a gas, and im pretty sure its water vapor that comes out of the pan. I hope that helped??? :)
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a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc
ladessa [460]

Answer:

The molarity of the solution is 1.1 \frac{moles}{liter}

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

molarity=\frac{number of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}

In this case

  • number of moles of solute= 0.564 moles
  • volume= 0.510 L

Replacing:

molarity=\frac{0.564 moles}{0.510 L}

Solving:

molarity= 1.1 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.1 </em></u>\frac{moles}{liter}<u><em></em></u>

4 0
3 years ago
alculate the molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution.
valentina_108 [34]

The molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution is 2.3 M.

<h3>What is Molarity? </h3>

Molarity is defined as the ratio of number of moles of solute to the volume of the solution.

Molarity = number of moles of solute/ Volume of solution

Given,

given mass of sodium hydroxide= 20 g

Volume of the solution = 200 mL.

Firstly, we will calculate the moles of sodium hydroxide.

<h3>What is Mole? </h3>

Mole is defined as the ratio of given mass of substance to the molar mass of substance.

Mole = given mass/ molar mass

Molar mass of sodium hydroxide = 40 g

Mole = 20/40

= 0.5 mol

Molarity = (0.5/ 200) × 1000 = 2.5M

Thus, we calculated that the molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution is 2.3 M.

learn more about Molarity:

brainly.com/question/19517011

#SPJ4

5 0
2 years ago
Most minerals are _______ at room temperature.<br><br> solid<br> gas<br> liquid
Tomtit [17]

Answer:

solid

Explanation:

4 0
3 years ago
Read 2 more answers
Write the concentration equilibrium constant expression for this reaction. cu 2 (aq) 2ag (s) → cu (s) 2ag (aq)
Llana [10]
The redox reaction given is,

                 Cu₍s₎ + 2Ag⁺₍aq₎ ---------> Cu²⁺₍aq₎ + 2Ag₍s₎

The equilibrium constant for this reaction is as follow,

                           Kc = [Cu²⁺][Ag]² / [Cu][Ag⁺]² 
 
                           Kc = [Cu²⁺] / [Ag⁺]²              ∴ {[Cu₍s₎] = 1 & [Ag₍s₎] = 1

So, Above bolded is <span>the concentration equilibrium constant expression for the given reaction.</span>
4 0
4 years ago
Read 2 more answers
Hello!
blondinia [14]

Answer:

[CO]=[Cl_2]=0.01436M

[COCl_2]=0.00064M

Explanation:

Hello there!

In this case, according to the given chemical reaction at equilibrium, we can set up the equilibrium expression as follows:

K=\frac{[CO][Cl_2]}{[COCl_2]}

Which can be written in terms of x, according to the ICE table:

0.32=\frac{x^2}{0.015M-x}

Thus, we solve for x to obtain that it has a value of 0.01436 M and therefore, the concentrations at equilibrium turn out to be:

[CO]=[Cl_2]=0.01436M

[COCl_2]=0.015M-0.01436M=0.00064M

Regards!

5 0
3 years ago
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