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IRINA_888 [86]
3 years ago
13

Multiple Select Question

Chemistry
1 answer:
Serggg [28]3 years ago
7 0

The four (4) functions of water in the body are:

I. Site for many reactions.

II. Transport of nutrients and wastes.

III. Carries heat.

IV. Acts as solvent.

Water can be defined as a liquid molecule that comprises two (2) main chemical elements, which are hydrogen and oxygen in the ratio of two to one (2:1).

Generally, water is considered to be an important and essential chemical molecule that aids in the growth and development of the body of living organisms. The four (4) functions of water in the body of a living organism are:

  • It is typically a site for many reactions.
  • It helps in the transportation of nutrients and wastes around the body.
  • It carries heat from a hot region.
  • It acts as solvent to dissolve a solute to produce a solution.

Read more: brainly.com/question/19695951

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Which of the following statements about benzene is true? Multiple Choice
fenix001 [56]

Answer: option a and d

Explanation:

Option A- Benzene undergoes substitution reaction

Example : benzene reacts with chlorine to form chlorobenzene, in the presence of Iron

(iii) chloride as a catalyst

C6H6 + Cl2 ---> C6H5Cl + HCl

Option D- Benzene also undergoes addition reaction

Example: benzene reacts with hydrogen , in the presence of nickel as a catalyst to form

cyclohexane

C6H6 + 3H2 ---> C6H12

Reasons why Option B isn't the answer

Although benzeme has degree of unsaturation but it's not five degree of unsaturation.

Benzene has 6 carbon atoms and 4 degrees of unsaturation (1 ring and 3 double

bonds).

If you work backwards and double the degrees of unsaturation you have 8 degrees of

unsaturation instead of 5.

Option C - Benzene isn't a saturated hydrocarbon

6 0
3 years ago
A substance has a volume of 20mL and a density of 2.5 g/mL. what is it’s mass?
DochEvi [55]
2.5X20=50g
50g should be the right answer
Mass=volumeXdenisty.
4 0
3 years ago
The reaction described in Part A required 3.54 L of magnesium chloride. What is the concentration of this magnesium chloride sol
labwork [276]

we need the cholride solution Part B to answer your question

7 0
3 years ago
A scientist was asked to test the effect of a new vitamin for rats. His hypothesis was that young rats that had vitamins added t
Olin [163]

A: incorrect because there will be no effect on keeping the rats in separate cage in the same room at the time of the experiment.

C: incorrect because it's depend upon scientist whether he wants to record the observation on the graph or on the table. Thus, no affect will be caused on the observations.

D: incorrect because peer review is done only after the experiment is completed.

Thus, statement B is correct because the growth graph of male and female of any species is different. Male tend to grow more than their female counterparts. So, for the process of the study it is essential that all the rats included are either male or female.

Hence, option (B) is correct.

8 0
3 years ago
Read 2 more answers
A phospholipid has a glycerol attached to a phosphate group and two fatty acid chains. The head is hydrophilic, and the tail is
Rzqust [24]

Answer:

Because they are normally dissolved in water

Explanation:

The phospholipids can act as molecules that are carry inside or outside the cells, to transport it they are dissolved in another hydrophilic media, in this way the hydrophilic part can be in the outside part of the group of moleucles stick together like in cell membranes that are conformed by a double lipidic layer, in which the hydrophobic part it in the inside part. The cells normally are surrounded by different water solutions as the blood or another solutions.

7 0
3 years ago
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