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iris [78.8K]
3 years ago
11

How does the average velocity of molecules in a high-temperature gas compare to the average velocity of molecules of the same ga

s with a lower temperature?
Chemistry
1 answer:
IrinaK [193]3 years ago
8 0

Answer:lower temp molecules act slower so they come closer together and heated molecules are more spaced out that is why when you put an ice cube in a hot pan the ice melts and turns into a liquid due to heat the molecules space out

Explanation:

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The Earth and the spaceship both have mass. The astronaut is attracted to Earth by gravity, but he is not attracted to the space
Shkiper50 [21]
The spaceship does not have any gravitational pull. A spaceship can not produce its own gravity like Earth does.
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3 years ago
How do metalloids affect modern technology?
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7 0
3 years ago
Is Fe2O3+H2--2Fe+3H2O balanced or unbalanced?
NISA [10]

hydrogen is not balanced

the right balanced equation is

Fe2O3 + 3 H2 -> 2Fe + 3H2O

3 0
3 years ago
HEY CAN ANYONE PLS ANSWER DIS IN UR OWN WORDS!!!!!
alexandr1967 [171]

Answer:

1. They debated about many things.

2. Greek philosophers debated about things. They did not have a scientific/experiment based approach to studying nature. They did not have tools.

3. Democritus

4. Democritus had the basic idea of atoms, even though he had no experimental evidence to support his thinking.

5. taught that there were substances called atoms and that these atoms made up all material things. The atoms were unchangeable, indestructible, and always existed.

Explanation:

hope this helps

8 0
2 years ago
Click on the box to choose which compound has a greater difference in electronegativities of its members. Use the
4vir4ik [10]

Answer:

See the example below.

Explanation:

Let us make an example with a group of compounds to apply the general <em>trends of electronegativities</em> within families to find which compound has a greater difference in electronegativities.

Use this group.

  • a. HBr
  • b. HI
  • c. HF
  • d. HCl
  • e. H₂

Br, I, F, and Cl belong to the halogen family (group or column 17 of the periodic table).

Electronegativity is a relative measure of how strong an atom atracts the bonding electrons in a compound.

Since the strength of attracion of the valence electrons by the nucleus of an atom decreases as the size of the atom incease, in a family of elements (same group) the electronegativity decreases as you go down in the group.

The order of the halogens from top to bottom in the column in the periodic table is F, Cl, Br, and I.

Thus, the order of their electronegativiies is: F > Cl > Br > I. F is the most electronegative atom, and all those elements have higher electronegativy than H. (The electronegativiy of I is 2.66 and the electronegativity of H is 2.2). Thus, including H, the rank of the electronegativities is F > Cl > Br > I > H.

Thus, the greater difference in electronegativities is for HF (option a.).

Note, that the difference in electronegativites of the atoms of the molecule H₂ is zero, since both atoms have the same electronegativity.

3 0
3 years ago
Read 2 more answers
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