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Gnesinka [82]
3 years ago
7

6. Phylogenetic trees are used for?

Biology
1 answer:
ivolga24 [154]3 years ago
3 0

Phylogenetic trees show the evolutionary pathways and connections among organisms. A phylogenetic tree is a diagram used to reflect evolutionary relationships among organisms or groups of organisms.

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Na + Cl2 --> NaCl if you were given 15 grams of sodium (with excess chlorine) and asked to determine the amount of NaCl that
Elena-2011 [213]

Answer:

The correct answer is - 38.15 gm of NaCl.

Explanation:

Write the balanced equation for this reaction of sodium (Na) and chlorine (Cl₂) to produce sodium chloride (NaCl):

2Na + Cl₂ —> 2NaCl

the mass of Na and the mass of NaCl :

Molar mass of Na = 23 g/mol

In the balanced equation = 2 × 23 = 46 g

Molar mass of NaCl = 23 + 35.5

= 58.5 g/mol

similarly in balanced equation = 2 × 58.5 = 117 g

From the balanced equation above,

46 g of Na reacted to produce 117 g of NaCl.

By converting it to 15 grams of Na.

Therefore,15 g of Na will react to produce = (15 × 117)/46 = 38.15 g of NaCl.

Thus, 38.15 g of Na

4 0
3 years ago
Which one of the following physical quantities is formed after dividing mass of volume?
Mkey [24]

Answer:

Density

Explanation:

Density is refer to how much space an object in Mass take in volume.

It is mass if an object divided by volume.

It usually in g/cm3

8 0
2 years ago
Several infections of the cardiovascular system can be identified by inspecting a stained blood smear in the microscope. For the
blsea [12.9K]

Answer:

The correct answer is option C. Epstein-Barr virus: virus visible inside red blood cells.

Explanation:

The Epstein-Barr virus is a virus or virions that cause several serious diseases such as Guillain-Barre syndrome and kind of cancers. These viruses can be detected by the making smear of blood in the electron microscope.

The electron microscope shows round capsids that have protein encased genetically material that is loosely enclosed in a membrane. These are transmitted through saliva generally.

Thus, the correct answer is C.

8 0
3 years ago
30 POINTS
Anika [276]
The answer is 9 because to find the amount of neutrons you have to take away the atomic number from the mass
7 0
3 years ago
The Cambrian Explosion resulted in the evolution of the first
Stels [109]
The answer to your question would be B
5 0
3 years ago
Read 2 more answers
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