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sergij07 [2.7K]
3 years ago
15

7. From the arteries, blood flows into tiny, narrow vessels called _________________________________________.

Chemistry
2 answers:
Liula [17]3 years ago
8 0
The heart and blood vessels constitute the cardiovascular (circulatory) system. The blood circulating in this system delivers oxygen and nutrients to the tissues of the body and removes waste products from the tissues.

The blood vessels consist of

Arteries
Arterioles
Capillaries
Venules
Veins
All blood is carried in these vessels.
lora16 [44]3 years ago
5 0

Answer:

Arterioles

Explanation:

Arterioles

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4 0
3 years ago
Narceine is a narcotic in opium that crystallizes from solution as a hydrate that contains 10.8 mass % water and has a molar mas
Leto [7]

Thewater of hydration x in narceine. xH₂O is 3

<h3>What is Water of Hydration?</h3>
  • In chemistry, water molecules found inside crystals are referred to as "water of crystallization" or "water of hydration." When crystals are formed from aqueous solutions, water is frequently included.
  • The entire mass of water in a substance at a specific temperature is sometimes referred to as water of hydration, and it is typically present in a stoichiometric ratio.
  • The term "water of crystallization" has historically been used to describe water that is not physically linked to the metal cation but is present in the crystalline structure of a metal complex or salt.
  • Many chemicals include water molecules in their crystalline structures when they crystallize from water or solvents that contain water. Heating a sample usually removes the water of crystallization, but the crystalline qualities are frequently lost.

Given that hydrate is 10.8% by mass

molar mass = 499.52 g/mol

calculating the amount of water

mass of water = \dfrac{10.8 \times 499.5}{100}

mass of water = 53.95 g

moles of water = \dfrac{mass}{molar mass}

moles of water = \dfrac{53.95}{18} = 3

then the water of hydration x in narceine. xH₂O is 3

To learn more about water of hydration with the given link brainly.com/question/4355575

#SPJ4

7 0
1 year ago
Why are liquids often dense?
Kisachek [45]

Answer: Because of how long they sit out or they get really cold

Explanation:

8 0
3 years ago
The atom below with the greatest number of valence electrons is _______. A. Cl: 1S2 2S2 2P6 3S2 3P5 B. Br: 1S2 2S2 2P6 3S2 3P6 4
allochka39001 [22]
Me. It has 6 valence electrons. Everything else has 5
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4 years ago
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