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Tpy6a [65]
3 years ago
15

Which sentence about particles in matter is true?

Chemistry
2 answers:
MAVERICK [17]3 years ago
7 0
B, because its a simple matter (puns lol) of the fact that all matter is moving, just some moves slower than others.
Marianna [84]3 years ago
3 0
<h3><u>Answer;</u></h3>

B. The particles of matter are in constant motion

<h3><u>Explanation;</u></h3>
  • Matter is anything that has weight and occupies space. It occurs in three states namely, gases, liquids and solids.
  • <em><u>All matter is made up of tiny particles that are in constant motion.</u></em>
  • <em><u>According to kinetic theory of matter, matter is made of many particles, that is atoms or molecules, that are in constant motion. </u></em>
  • In gases, the motion of particles are in constant random motion, they move freely. In liquids, the motion is constrained by the liquid's volume, while in solids the motion of particles is greatly constrained to a small space.
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A sample of sodium reacts completely with 0.284 kg of chlorine, forming 468 g of sodium chloride. What mass of sodium reacted?
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Answer:

mass of sodium reacted is 184.1 g

Explanation:

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mass Na = X = ?

∴ mass NaCl = 468 g

∴ mass Cl = 0.248 g

∴ molar mass NaCl = 58.44 g/mol

∴ atomic mass Cl = 35.453 a.m.u

∴ atomic mass Na = 22.989 a.m.u

⇒ moles Na = (X gNa)*(mol Na/22.989 g) = X/22.989 mol Na

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clearing "X":

⇒ ((58.44)(X))/(22.989) = 468 g

⇒ X = 184.1 g = mass Na reacted

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2 years ago
What is the frequency of an x-Ray with a wavelength of 1.15 times 10^-10
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