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ololo11 [35]
3 years ago
14

Can light move through space even though there are no molecules?

Chemistry
1 answer:
amid [387]3 years ago
7 0

Answer:

This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...

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The president of the United States when the Soviet Union dissolved was Bill Clinton.
ddd [48]
False, it is not the former President Bill Clinton. The United States of America President of the time when the Soviet Union was dissolved is no other than former President Geroge H. W. Bush. The Soviet Union started to dissolved way back in year 1980s but it was not yet former Presiden George H. W. Bush is the president that time, it was former President Ronald Reagan. On the year 1991, the Soviet Union finally dissolved and Bush was the president that time.
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T/F___ At the eutectic composition, an alloy can solidify at a constant temperature.___ For effective dispersion strengthening,
azamat

Answer:

  • TRUE
  • FALSE
  • TRUE
  • FALSE
  • FALSE
  • TRUE

Explanation:

  • At the eutectic composition, an alloy can solidify at a constant temperature : TRUE . this is because at eutectic composition the type of reaction that takes place there is invariant reaction in its thermal equilibrium
  • For effective dispersion strengthening, the dispersed phase should be needle-like, as opposed to round : FALSE. because the rounded shape will not cause a crack.
  • Intermetallic compounds are usually hard and brittle : TRUE. because Intermetallic compounds prevents dislocation movements and this makes them brittle and hard
  • For the effective dispersion and strengthening, the dispersed phase should be continuous : FALSE. this is because the dispersed precipitate must be small and not continuous
  • Stoichiometric intermetallic compounds exist over a range of compositions : FALSE
  • Faster solidification results in smaller interlamellar spacing : TRUE
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3 years ago
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?
MakcuM [25]

Answer:

The motion of the gas particles is random and in a straight-line. A sample of gas is contained in a closed rigid cylinder.

I hope this helps you if not soo advance sorry :)

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