In speciation, two species interbreed to form one new species.<br><br><br> True<br><br> False

NeX [460]

<h2>Hello!</h2>

The answer is:

The balanced equation is:

$4Fe+3O_2=2Fe_{2}O_{3}$

Finding a balanced equation of a reaction means making equal the number of atoms for both reactants and products sides, according to the conservation mass law, the mass is always conserved, so, we need to make both quantities of atoms/molecules match.

So, we are given the following reaction:

$Fe+O_2=Fe_{2}O_{3}$

For the reactants, we have 1 molecule of Fe and 2 of O

For the products, we have 2 molecules of Fe and 3 of O

So, balancing the Oxygen, we have:

$Fe+3*O_2=Fe_{2}O_{3}$

$Fe+3O_2=Fe_{2}O_{3}$

Now, there are 6 atoms of oxygen in the reactant, let's multiply the product by 2 in order to make both sides match, so:

$Fe+3O_2=2*(Fe_{2}O_{3})$

$Fe+3O_2=2(Fe_{2}O_{3})$

Now, we can see that there are 6 atoms of Oxygen in both sides, but there are 4 atoms of Fe in the products and just 1 atom in the reactants, so, we need to multiply the Fe by 4.

So, balancing the Iron (Fe) we have:

$4*Fe+3O_2=2(Fe_{2}O_{3})$

$4Fe+3O_2=2Fe_{2}O_{3}$

Hence, we can see that we now have the same number of atoms on both sides, we have:

$Fe_{reactants}=4\\O_{reactants}=6\\Fe_{products}=4\\O_{products}=6$

Therefore, the equation is balanced.

$4Fe+3O_2=2Fe_{2}O_{3}$

Have a nice day!

5 0

3 years ago

When performing a biceps curl, tension in the biceps brachii muscle increases. Which of the following structures detects and res

mars1129 [50]

Answer:

A) Golgi tendon organ.

Explanation:

A tendon organ or neurotendinous organ or Golgi tendon organ is a mechanoreceptor located at the insertion point of the skeletal muscle to the tendon that is at the myotendinous junction.

The Golgi tendon organ is composed of the collagenous muscle fibres which contain the receptors which sense the contraction of active stretch of the muscles and sends it to the brain. The brain sends the response and the muscle act by the inverse myotatic reflex.

Thus, Option-A is the correct answer.

7 0

4 years ago

Read 2 more answers

Is peter receiving enough dietary iron? assume that he eats the entire portions?

Ratling [72]

A balanced diet should cover the needs. Iron is mainly present in meat.

Iron needs vary according to sex, age, and physiological status. The recommended dietary intakes are 9 mg per day for men and women breastfeeding and menopausal, 16 mg for women and 25 mg for pregnant women.

Peter had 10.8mg of iron, so yes it is enough for his needs.

6 0

3 years ago

5. Gastrointestinal motility includes -------------------- which causes ------------------ and ------------, which causes ------

Paha777 [63]

Answer: The correct option is A (Segmentation waves; food to move backward and forward; peristalsis; food to move along the tract distally).

Explanation:

Gastrointestinal motility is defined as the different activities carried out by the smooth muscles of the tract which Involves it's contraction and relaxation to bring about the movement of ingested food through the gut for absorbing nutrients, water,electrolytes and eliminating waste products. These movements can be divided into two namely:

--> Mixing Contractions: These contractions are also called the SEGMENTATION WAVES. When a portion of the small intestine becomes distended with chyme, stretching of the intestinal wall elicits localised concentric contraction spaced at interval along the intestine causing segmentation of the small intestine. These contraction causes the movement of chyme BACKWARD and FORWARD which allows greater mixing with the secretions of the intestines.

--> Propulsive Contractions: These contractions are also called peristaltic waves. Bands of muscles in the walls of the gastrointestinal tract contract and relax alternately to push each bolus of food downwards slowly. This process is known as PERISTALSIS. This occurs in all regions of the tract causing the movement of food towards the anus (distal direction).

Therefore, gastrointestinal motility includes Segmentation waves which causes food to move backward and forward, and peristalsis; which causes food to move along the tract distally.

8 0

3 years ago

Name two types of evidence some scientists used to support

Fudgin [204]

If you are talking about evolution, the two types of evidence is
1. fossil evidence
2. molecular evidence

6 0

3 years ago

Read 2 more answers

In speciation, two species interbreed to form one new species. True False