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Kamila [148]
3 years ago
6

Oxygen and hydrogen are kept under the same temperature and pressure. Oxygen molecule is 16 times more massive than hydrogen one

. We can predict that kinetic energy of oxygen molecule is (20.1)
Chemistry
1 answer:
lozanna [386]3 years ago
3 0

Explanation:

When we increase the temperature of a substance then there will occur an increase in the kinetic energy of its molecules.

Also,      K.E = \frac{3}{2}kT

So, kinetic energy is directly proportional to the temperature.

Hence, when temperature and pressure are kept the same for both oxygen and hydrogen gas then values of their kinetic energy will be the same irrespective of their masses.

Thus, we can conclude that kinetic energy of oxygen molecule is the same as compared to hydrogen molecule.

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6 What is the main difference between a homogeneous mixture and a heterogeneous mixture?
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6 0
3 years ago
Give the percent yield when 28.16 g of CO2 are formed from the reaction of 4.000 moles of C8H18 with 4.000 moles of O2.
ludmilkaskok [199]

Answer:

Percentage yield =  25%

Explanation:

Given data:

Moles of C₈H₁₈ = 4 mol

Moles of O₂ = 4 mol

Actual yield of CO₂ = 28.16 g

Percentage yield = ?

Solution:

Chemical equation:

2C₈H₁₈ + 25 O₂ → 16CO₂ + 18H₂O

Now we will compare the moles of CO₂ with O₂ and C₈H₁₈.

                 C₈H₁₈     :      CO₂

                     2        :       16

                     4        :       16/2×4=32 mol

                  O₂         :      CO₂

                    25        :      16

                     4         :       16/25×4=2.56 mol

Mass of CO₂:

Mass = number of moles× molar mass

Mass = 2.56 mol ×44 g/mol

Mass = 112.64 g

Percentage yield:

Percentage yield = Actual yield /theoretical yield × 100

Percentage yield = 28.16 g / 112.64 g× 100

Percentage yield = 0.25× 100

Percentage yield =  25%

5 0
3 years ago
How many significant figures are in 28.6 g
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There are no zeros, so all three digits<span> are significant.</span>
<span>b. 3440.</span>
8 0
3 years ago
Read 2 more answers
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