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dusya [7]
3 years ago
6

Polonium crystallizes in a simple cubic unit cell with an edge length of 3.36 Å.

Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
8 0

a. The unit cell is the smallest group of atom which have overall symmetry of a crystal, and from which is the entire letters can be buled built up by repetition in 3 dimensions.

b. The volume(v) of the unit cell is equal to the cell edge length (a)cubed.

c. density of polonium is 9.32g/cm3.

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Answer:

Yes

Explanation:

They continue to split and grow and split again until the organism that is carrying them dies.

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A science student observes that a dissolvable antacid tablet acts faster in relieving stomach pain when taken with warm water th
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When placed in a freezer, liquid water turns into solid ice. What best describes this change?
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Answer:

The water molecules slow down, stronger attractions form between them, and the molecules are pulled closer together.

Explanation:

In solids the packing of the particles is closer and tighter thus increasing the intermolecular attraction. This makes solids rigid with a definite shape, size and volume. On the other hand in liquids the packing of the particles is loose thus decreasing the intermolecular attraction. This makes liquids able to flow, and takes the shape and volume of the container in which they are placed.

3 0
3 years ago
A sample of water at 100°C is converted to steam after absorbing 820 kJ of heat. How grams of H2O are contained in the sample? A
Varvara68 [4.7K]
Since water is already at 100<span>°C all the energy is used to evaporate it. 
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m=20*20.16=403.2g




7 0
3 years ago
Provided is a list of five different substances. How many of these substances are elements?.
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118

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