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lutik1710 [3]
3 years ago
11

When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this

oxygen to the muscles?
Chemistry
1 answer:
Juliette [100K]3 years ago
5 0
The circulatory system is responsible for bringing food and oxygen to every cell in your body. The respiratory system is responsible for carrying oxygen and carbon dioxide in and out of your body.

Hope this helps :)
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In the chemical reaction, mg + 2hcl mgcl2 + h2 how many moles of hcl are needed to completely react with 3.5 moles of mg?
Luba_88 [7]
The balanced equation for the above reaction is as follows;
Mg + 2HCl ---> MgCl₂ + H₂
stoichiometry of Mg to HCl is 1:2
number of Mg moles reacted - 3.5 mol
1 mol of Mg reacts with 2 mol of HCl 
therefore 3.5 mol of Mg requires - 2 x 3.5 = 7.0 mol of HCl 
number of HCl moles required to completely react with 3.5 mol of Mg is 7.0 mol of HCl
6 0
3 years ago
How many atoms does C₆H₄Cl₂ have?
Charra [1.4K]

Answer:

There are 12 atoms in the compound

6 0
3 years ago
What are three anticipated uses of nitrogen when it is compressed to 2.4 million atmospheres? ​
Katen [24]

Answer:

Explosive, Propellant and Semiconductor

Explanation:

8 0
3 years ago
How many molecules of manganese (IV) sulfate are there if you are given 542.32g?
MAVERICK [17]

Answer:

3.47 mol MnSO4

Explanation:

54.94 + 32.07 + (16 × 4) = 151.01g/mol MnSO4

542.32g / 151.01g/mol = 3.47 mol MnSO4

5 0
3 years ago
How many water molecules are produced when 5.2g O2 are reacted
gtnhenbr [62]

Answer:

Total number of water molecules produced after the reaction is 1.956×10^22 molecules of water.

Explanation:

By the reaction

H2+ 1/2 O2 → H2O

Moles of O2 = 5.2\32

⇒1 mole of O2 produce 1  mole of H2O

  1 mole O2 will produce 2 mole  of H2O

Therefore, 5.2\32 mole will produce {2}\times{\frac{5.2}\times{32}}

⇒ Molecules of H2O  will be

         {2}\times{\frac{5.2}{32}} = \frac{x}{{6.02}\times{10^23}}

= 1.956×10^22 moleculesof H2O.

5 0
3 years ago
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