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tankabanditka [31]
3 years ago
10

C3H8 + 5 O2 → 3 CO2 + 4 H2O

Chemistry
1 answer:
Reika [66]3 years ago
7 0

Answer:

Mass = 112 g

Explanation:

Given data:

Mass of CO₂ produced = 90.6 g

Mass of oxygen needed = ?

Solution:

Chemical equation:

C₃H₈ + 5O₂       →      3CO₂+ 4H₂O

Number of moles of CO₂:

Number of moles = 90.6 g/ 44 g/mol

Number of moles = 2.1 mol

Now we will compare the moles of  CO₂ and oxygen:

                 CO₂           :           O₂

                    3             :            5

                    2.1           :        5/3×2.1 = 3.5

Mass of oxygen needed:

Mass = number of moles × molar mass

Mass = 3.5 mol × 32 g/mol

Mass = 112 g

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Nuclear DNA strands in plants are of higher complexity than those of protist

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3 years ago
Calculate the mass of aluminum in 500 g of Al(C2H3O2)3
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Explanation:

1) The ratio of Al in the molecule is  1 mol to 1 mol .

2) The mass of 1 mol of molecules of Al (CH2H3O2)3 is the molar mass of the compound.

3) You calculate the molar mass of the compound using the atomic masses of each atom, in this way:

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Molar mass = 27 g/mol + 72 g/mol + 9 g/mol + 96 g/mol = 204 g/mol

4) Set a proportion:

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5) Solve for x:

x = 500 g * 27 g/mol / 204 g/mol = 66.2 g
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A Type of Drink

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A controlled variable remains constant throughout the experiment.

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