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Elena-2011 [213]
3 years ago
15

During a class demonstration the potassium exploded. Suggest what might have caused this to happen

Chemistry
1 answer:
tatiyna3 years ago
7 0
Could’ve reacted with water as alkali metals are very reactive to water.
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Sort these elements into pairs that would most likely exhibit similar chemical properties. It doesn't matter which pair goes in
denis-greek [22]

Explanation:

It is known that neutral elements with same number of valence electrons will have same chemical properties. Therefore, elements of same group show similar chemical properties.

Thus, we can see that P and As belongs to group 15. So, they will exhibit similar chemical properties.

Both Ca and Ba belongs to group 2, hence they will exhibit similar chemical properties.

Whereas both He and Ar belongs to group 18 and they will exhibit similar chemical properties.

4 0
3 years ago
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What does the term solar power mean?
Elenna [48]

Explanation:

Power obtained by harnessing the energy of the suns rays

5 0
3 years ago
Which of the following gas samples would contain the same amount of gas as 200 mL of helium, He(g), at 25° C and 1 atm?
monitta

Answer:

200\; \rm mL of neon \rm Ne\, (g) at 25^{\circ} \rm C and 1\; \rm atm (the second choice) would contain an equal number of gas particles as 200\; \rm mL\! of \rm He \, (g) at 25^{\circ} \rm C\! and 1\; \rm atm\! (assuming that all four gas samples behave like ideal gases.)

Explanation:

By Avogadro's Law, if the temperature and pressure of two ideal gases is the same, the number of gas particles in each gas would be proportional to the volume of that gas.

All four gas samples in this question share the same temperature and pressure. Hence, if all these gases are ideal gases, the number of gas particles in each sample would be proportional to the volume of that sample. Two of these samples would contain the same number of gas particles if and only if the volume of the two samples is equal to one another.

The second choice, 200\; \rm mL of neon \rm Ne\, (g) at 25^{\circ} \rm C and 1\; \rm atm, is the only choice where the volume of the sample is also 200\; \rm mL \!. Hence, that choice would be the only one with as many gas particles as 200\; \rm mL\! of \rm He \, (g) at 25^{\circ} \rm C\! and 1\; \rm atm\!.

7 0
3 years ago
The trend in electronegativity is F >Cl >Br; therefore, the most ionic compound (CH2F2) has the lowest boiling point, and
bulgar [2K]

Answer:

False

Explanation:

Increase in polarity of a molecule leads to higher boiling points. The more polar a molecule is, the higher the energy required to breaks intermolecular forces of attraction hence the higher the boiling point. This is the reason why ionic compounds and compounds having polar covalent bonds in them tend to have high boiling points.

5 0
4 years ago
Which label belongs in the area marked X? can reproduce by budding can reproduce by fragmentation with regeneration reproduce in
marusya05 [52]

Answer:

Nucleus.

Explanation:

The sponge is a multicellular organism that consists of pores that allows water to move through the body. Sponges belong to the kingdom Animalia and phylum Porifera. Sponges can reproduce by budding. Sponges are placed in kingdom Animalia because they are unable to make their own food, made of more than one cell, and absence of cell wall.

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3 years ago
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