X equals <span>2.76923076923</span>
Answer:
CH₂
Explanation:
From the question given above, the following data were obtained:
Mass of Carbon (C) = 5.41 g
Mass of compound = 6.32 g
Empirical formula =?
Next, we shall determine the mass of Hydrogen (H) in the compound. This can be obtained as follow:
Mass of Carbon (C) = 5.41 g
Mass of compound = 6.32 g
Mass of Hydrogen (H) =?
Mass of H = mass of compound – mass of C
Mass of H = 6.32 – 5.41
Mass of H = 0.91 g
Finally, we shall determine the empirical formula of the compound. This can be obtained as follow:
Mass of C = 5.41 g
Mass of H = 0.91 g
Divide by their molar mass
C = 5.41 / 12 = 0.451
H = 0.91 / 1 = 0.91
Divide by the smallest
C = 0.451 / 0.451 = 1
H = 0.91 / 0.451 = 2
Thus, the empirical formula for the compound is CH₂
Number of particles in one mole of a pure substance
Explanation:
The avogadro's constant is the number of particles in one mole of a pure substance.
- A mole is a unit of quantity of particles.
- It can be likened to a quantity of things in everyday life like a dozen, a gross etc.
- A dozen is 12 units of substance.
- A mole contains 6.02 x 10²³particles.
- 6.02 x 10²³ is called the Avogadro's number or constant.
- This was proposed by Amedo Avogadro.
- A mole is the amount of a substance that contains the Avogadro's number of particles.
- The particles are atoms, molecules, formula units, ions, electrons, protons, neutrons e.t.c
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Avogadro's constant brainly.com/question/2746374
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Answer:
b and c
Explanation:
the problem was solved through the experiment and tested
At some convergent boundaries, an oceanic plate collides with a continental plate. Oceanic crust tends to be denser and thinner than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental crust. This forms what is called a subduction zone.