HELP ASAP! In what phase do molecules flow but still remain close together? A. Solid B. Liquid C. Gas D. None

Leaving a basketball out in the cold weather. When a basketball if left in a cold garage or outside during the cold months, it loses its air inside (or volume).

6 0

3 years ago

Which net ionic equation best represents the reaction that occurs when an aqueous solution of barium chloride is mixed with an a

vovangra [49]

Answer : The net ionic equation will be:

$Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)$

Explanation :

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

Net ionic equation : In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The balanced molecular equation will be,

$BaCl_2(aq)+Li_2SO_4(aq)\rightarrow 2LiCl(aq)+BaSO_4(s)$

The complete ionic equation in separated aqueous solution will be,

$Ba^{2+}(aq)+2Cl^-(aq)+2Li^+(aq)+SO_4^{2-}(aq)\rightarrow 2Li^+(aq)+2Cl^-(aq)+BaSO_4(s)$

In this equation the species, $Li^+\text{ and }Cl^{-}$ are the spectator ions.

By removing the spectator ions , we get the net ionic equation.

The net ionic equation will be:

$Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)$

6 0

3 years ago

How are the carbon, oxygen, and nitrogen cycles vital to sustaining life on Earth?. a.. Carbon, oxygen, and nitrogen are vital c

kumpel [21]

The correct answer is (D)

All the above are reasons the carbon , oxygen, and nitrogen cycles are vital to life on earth.

The explanation:

because :

1) Carbon, oxygen, and nitrogen are vital components of life on Earth.

2) The carbon, oxygen, and nitrogen cycles allow vital elements to return to usable form by organisms.

3)The carbon, oxygen, and nitrogen cycles are an important interface between biotic and abiotic factors

4) They are all biogeochemical cycles.

5) They all involve an interaction between living and nonliving elements.

6)They are all part of the Earth system.

5 0

3 years ago

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