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Dafna1 [17]
2 years ago
14

Assignment

Chemistry
1 answer:
Jobisdone [24]2 years ago
6 0

Answer:

\boxed {\boxed {\sf Ionic \ bond}}

Explanation:

First, let's look at the Periodic Table.

We see that aluminum is a metal, while oxygen is a non-metal.

Now, let's recall three types of bonds

  • Ionic: typically forms between a metal and a non-metal
  • Covalent: usually forms between non-metals
  • Metallic: tends to form with metals

Since we have a metal (Al) and a non-metal (O), aluminum oxide must have an <u>ionic bond.</u>

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1 mole of no2(g) has a greater entropy than 1 mole of n2o4(g). true or false
bija089 [108]
In order to answer this, you need to find the empirical data for the standard entropies. Please refer to this link: http://www.mrbigler.com/misc/energy-of-formation.PDF

For NO₂ gas, the entropy is 240 J/mol-K. For N₂O₄ gas, the entropy is 304.2 J/mol-K. Therefore, <em>the statement is false.</em>
7 0
2 years ago
Explain why atoms move at different speeds depending on whether they are in liquids or solids.
Ad libitum [116K]
<span>Atoms move at different speeds depending on whether they are in liquids or solids </span><span>because the atoms or particles in solids are closely bonded while they are loosely bonded in liquids.
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</span><span>The attractive forces between the particles are so high that they remain in fixed positions. The particles, then, cannot slip over the neighbors particles. They can only vibrate. That is why solids have definite form and volume.</span><span />

<span>That the particles in liquids are loosely bonded means that the attractive forces are less compared with solids. Then the partilces can move and pass each other. They are not in fixed arrangements any more. Yet the particles are attracted to each other, so they have definite volume, although they take the form of the vessel, and they can flow.
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4 0
3 years ago
A compound has an empirical formula of CH2 and a molar mass of 56 g. What is its molecular formula?
kipiarov [429]

Answer:

C4H8

Explanation:

First find the molar mass of CH2;

2(1.01) + 1(12.01) = 14.03g

Now divide the molar mass of the compound by the molar mass of CH2;

56g/14.03g = 3.9914 Round to nearest whole number = 4

Multiply CH2 by 4 to get the molecular formula;

CH2* 4 = C4H8

4 0
3 years ago
Ice, liquid, and water vapor are the three states of water
UNO [17]
This is true. Solid, Liquid, and Gas.


Hope that helps!!
7 0
2 years ago
Which object is a good conductor of heat and electricity?
Alex

Answer:

C

Explanation:

Metals are good conductors of heat

8 0
2 years ago
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