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Soloha48 [4]
3 years ago
14

Calculate the volume of air in liters that you might inhale (and exhale) in 1.0 hour. Assume that each breath has a volume of 0.

31 liters, and that you are breathing 11 times a minute.
Chemistry
1 answer:
kvv77 [185]3 years ago
8 0

Answer: The volume of air in liters that you might inhale (and exhale) in 1.0 hour is 204.6 L

Explanation:

Number of breaths in 1 minute = 11

Give each breath has volume of = 0.31 L

Volume of air inhaled in 1 minute =11\times 0.31L=3.41L

As we know 1 hour is equal to 60 minutes

Thus Volume of air inhaled in 60 minutes= \frac{3.41L}{1}\times 60=204.6L

Thus the volume of air in liters that you might inhale (and exhale) in 1.0 hour is 204.6 L

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what is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of
Alex

Answer:

The empirical formula is V₂O

Empirical formula of a compound is the formula that shows the simplest whole number ratio of the atoms of elements in a given compound. Empirical formula is normally calculated when the mass of each element in a compound is known or the percentage composition by mass of each element in a compound is known.

Step by Step Explanation:

Step 1: Percentage composition of each element

Percentage composition=(mass of an element/ mass of the compound)100%

Mass of Vanadium = 20.38 g

Mass of the compound = 23.58 g

% composition of Vanadium = (20.38 g/23.58 g) 100%

                                                 = 86.43 %

Mass of Oxygen = 23.58 g -20.38 g

                           = 3.2 g

% composition of oxygen = (3.2/g/23.58 g) 100%

                                          =  13.57%

Step 2: Find the number of atoms of each element in the compound

Number of atoms  = percentage composition/ atomic mass

Atomic mass of Vanadium = 50.94 g/mol

Number of atoms of V = 86.43 /50.94

                                  = 1.6967

Atomic mass of oxygen = 16 g/mol

Number of atoms of O = 13.57/16

                                      = 0.8481

Step 3:  Find the simplest ratio of atoms

Vanadium : Oxygen

            1.6967 : 0.8481

= 1.6967/0.8481 : 0.8481/0.8481

= 2: 1

Whole number ratio = 2 : 1

Therefore; the empirical formula is V₂O

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3 years ago
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3 years ago
To three significant digit,what is the mass percentage of iron in the compound Fe2O3​
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69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

 Mass percentage  = \frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3}  }  x 100

Molar mass of Fe = 55.85g/mol

Molar mass of O = 16g/mol

Molar mass of Fe₂O₃ = 2(55.85) + 3(16) = 159.7‬g/mol

Mass percentage  = \frac{2(55.85)}{159.7}  x  100   = 69.94% = 69.9%

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Mass percentage brainly.com/question/8170905

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A 3.0 M HCl(aq) solution contains a total of
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Molarity = number of moles / volume in liters solution

Answer (3)

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3 years ago
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Soda pop is carbonated with CO2. Mark puts one bottle of soda pop in the refrigerator and leaves the other out in the hot sunlig
fomenos

Answer:

The one left in the hot sunlight.

Explanation:

The solubility of gases decreases when temperature increases. The gas in the soda pop (CO2) left in the sun will not stay dissolved as much as the on left in the refrigerator.

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