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Anika [276]
3 years ago
14

Why is air called a homogeneous mixture?

Chemistry
1 answer:
Goryan [66]3 years ago
8 0

Answer:

Air is called a homogeneous mixture because all of the elements that make up air (oxygen, nitrogen, argon, carbon dioxide etc.) are not able to be distinguished between when you look at air.

Explanation:

A heterogeneous mixture would be something like trail mix. You can look at the bowl of trail mix and pick out the raisins from the nuts from the chocolate. A homogeneous mixture is something where the individual elements can't be picked out by the plain eye. When you look at air you can't say oh that part is oxygen and that is argon when you are going on a walk. Air is a solution and thus you can't pick out each part.

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What is the ionic form of this unbalanced equation? mno2 + hno2 → mn(no3)2 + h2o?
KATRIN_1 [288]
The  ionic  form  of  the unbalanced  equation

MnO2  +HNO2 =  Mn(NO3)2  +H2O  is  as   below

MnO2(s)   +  H^+(aq)  + NO2^-(aq) = Mn^2+(aq)  + No3^-(aq)  +  H20(l)

MnO2   does  not  dissociate  since it is  in solid state. In   addition H2O   is in liquid  state  thus  does  not  dissociate in to  ions
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What is the universal gas law?
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4 years ago
Which of the solutions have greatest osmotic pressure 30% sucrose 60% sucrose or 30% magnesium sulfate?
timofeeve [1]

Answer:Osmotic pressure is the minimum amount of pressure a solution must exert in order to prevent from crossing a barrier by osmosis. Solute molecules have difficulty crossing semipermeable membranes, so the more solutes that are in a solution, the higher the osmotic pressure will be. Between 30% sucrose and 60% sucrose, 60% sucrose will have a greater osmotic pressure than 30% because it has a higher percentage of solutes. However, since sucrose has a higher potential to cross semipermeable membranes and is more absorbable than magnesium sulfate, magnesium sulfate would have a higher osmotic pressure than 60% sucrose even though 60% sucrose has higher molecules.

Explanation:

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3 years ago
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Answer:

So they have the right answers

Explanation:

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Write the net cell equation for this electrochemical cell. Phases are optional. Do not include the concentrations. Co ( s ) ∣ ∣
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Answer: The overall equation will be Co(s)+2Ag^+(aq)\rightarrow Co^{2+}(aq)+Ag(s)

Explanation:

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Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

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The number of electrons lost must be equal to the number of electrons gained , thus overall equation will be :

Co(s)+2Ag^+(aq)\rightarrow Co^{2+}(aq)+Ag(s)

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