CHEMISTRY HIGH SCHOOL

A chemical reaction between iron atoms and oxygen molecules can only occur if(1) the particles are heated
(2) the atmospheric pressure decreases
(3) there is a catalyst present
(4) there are effective collisions between the particles

Answers

Answer 1
Answer: Answer: option (4) there are effective collisions between the particles


Justification:


The collision theory explains the chemical reactions in terms of collisions. A chemical reaction takes place if two molecules collide effectively.


So, the first conditon is that the collision occur.


The second condition, that the collision be effective requires two conditions:


1) that the collision occurs with the proper orientation of the molecules, and


2) that the energy of collision be high enough to start the break of the original bonds ant the creation of the new bonds in the activated complex.

The energy required to form this activated complex is the activation energy.


So, an effective collision requires the proper orientation of the molecules when they collide and that the energy be equal or greater than the activation energy.


Temperature and catalyst are factors that affect the occurrence of those collisions, so they affect the rate of the reaction, by modifiying the number of collisions.
Answer 2
Answer: the answer is D because in order for a reaction to take place there must be collisions between the iron and oxygen atoms

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What is the mole ratio of NaOH To Al(OH)3

Answers

The Molar ratio identify how many moles of product and reactant. are formed during a reaction.
Here, we have 1 NaOH and 3  Al(OH), which mean that the molar ratio of NaOH to Al(OH)3 is 1:3 (or 1/3)

Therefore, 1.2 moles of NaOH will produce (1/3) * (1.2) = 0.4 Moles of Al(OH)3

Hope this Helps :D

What is equal to the number of particles in 24 grams of carbon-12? 2 moles 2:1 mole ratio 2:1 molar mass 1:2 molar volume

Answers

Answer:

The answer to your question is 2 moles of Carbon

Explanation:

Carbon-12 means it has a molecular mass of 12g / mol. Mol is defined as the number of grams of an atom in one mol.

To solve this problem, we use proportions

                                    12 g of Carbon ---------------- 1 mol of Carbon

                                     24 g of Carbon --------------   x

                                     

                                      x = ( 24 g x 1 mol ) / 12 g

                                      x = 24 / 12

                                     x = 2 mol of Carbon

Answer:

2 moles

Explanation:

just took the test :D

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Hypervitaminosis is a serious health threat associated with excessive amounts of ingested fat-soluble vitamins. why do water-soluble vitamins not commonly pose the same threat?

Answers

Answer:

Hypervitaminosis is a serious health issue which is associated with the accumulation of the vitamins in the body. This problem is mainly associated with the fat soluble vitamins.

This is because the fat soluble vitamins gets accumulated in the fatty cells of the body. Whereas, in case of water soluble vitamins it gets dissolved in water and gets eliminated from the body.

So, there is very rare chance that the water soluble vitamin not cause hypervitaminosis.

Final answer:

Hypervitaminosis does not typically occur with water-soluble vitamins because excess amounts are excreted in urine rather than stored in the body, preventing a harmful build-up that could lead to toxicity.

Explanation:

Hypervitaminosis is indeed a health threat associated with excessive intake of fat-soluble vitamins, but water-soluble vitamins do not typically pose this risk because of how our bodies process them. Fat-soluble vitamins, which include vitamins A, D, E, and K, can be stored in our bodies, specifically in our liver and fat tissues. Therefore, consuming them in excessive amounts can lead to accumulation, resulting in toxic effects known as hypervitaminosis.

On the other hand, water-soluble vitamins, which include vitamins B and C, cannot be stored in the body for a long duration. Any excess intake of these vitamins is typically excreted in urine, preventing a harmful build-up in the body, thus reducing the risk of hypervitaminosis.

Learn more about Vitamin intake here:

brainly.com/question/32816159

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What mass of iron (II) sulfate is found in 75 mL of a 5% w/v solution?

Answers