Aaron is visiting a national park in Pennsylvania. The ranger tells Aaron that he is unlikely to see any groundhogs because it is winter.Which of the following is the most likely reason Aaron would NOT see any groundhogs?

The groundhogs are hibernating.

The groundhogs migrated.

The groundhogs have died out.

The groundhogs are gathering food.

Answer:

0.01M

Explanation:

Given paramters:

Volume of FeCl₂ = ?

Concentration = 0.945M

Number of molecules of O₂ = 4.32 x 10²¹molecules

Solution:

The balanced reaction equation is given below:

           4FeCl₂ + 3O₂ → 2Fe₂O₃ + 4Cl₂

Now, to solve the problem we use mole relationship between the compounds.

We work from the known to the unknown compounds. Here, the known is the oxygen gas because from the given parameters we can estimate the number of moles of the reacting gas.

  number of moles of O₂ =

number of moles of O₂ =  

number of moles of O₂ = 0.007mole

now, from the reaction equation we find the number of moles of the FeCl₂:

   3 mole of O₂ reacted with 4 moles of FeCl₂

0.007mole of O₂ reacted with = 0.0096mole O₂

Now to find the volume of FeCl₂ we use the expression below;

       volume of FeCl₂ =

                                   =  

                                    = 0.01L

Final answer:

10.1 milliliters of 0.945 M solution of FeCl2 are required to react completely with 4.32 x10^21 molecules of O2.

Explanation:

Given the balanced chemical equation: 4FeCl2(aq) + 3O2(g) → 2Fe2O3(s) + 4Cl2(g) we know that 4 moles of FeCl2 react with 3 moles of O2. Avogadro's number (6.02 x 10^23) can be used to convert the given molecules of O2 into moles: 4.32 x 10^21 molecules of O2 is equal to 0.00718 Moles of O2.

Using stoichiometry and the molar ratio from the balanced equation, this amount of O2 would react completely with 0.00958 Moles of FeCl2. Given that the solution is 0.945 M (moles/liter), we can calculate the necessary volume of FeCl2 solution:

Volume = Moles / Molarity, therefore, Volume = 0.00958 Moles / 0.945 M = 0.0101 liters or 10.1 milliliters of 0.945 M solution of FeCl2 are required to react completely with 4.32 x10^21 molecules of O2.

Learn more about Chemistry stoichiometry here:

brainly.com/question/32493265

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Final answer:

Endothermic reactions absorb energy from the environment and make it cooler, such as photosynthesis in plants, while exothermic reactions release energy into the environment and make it hotter, like burning wood in a fireplace.

Explanation:

Endothermic and exothermic reactions are different in terms of energy absorption and release. In an endothermic reaction, energy in the form of heat is absorbed from the surroundings into the system (reaction). This causes the environment to become cooler. An example would be the process of photosynthesis in plants.

In contrast, an exothermic reaction releases energy into the surroundings. As a result, the environment around an exothermic reaction heats up. An example of an exothermic reaction is combustion, such as the burning of wood in a fireplace.

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gold is more dense than wood? hope its right!

Answer:gold is more dense than wood wood has like air bubbles in it which makes it float and gold is solid with no bubbles

Explanation: