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olya-2409 [2.1K]
3 years ago
14

Describe general characteristics of potassium

Chemistry
1 answer:
Virty [35]3 years ago
6 0
Leg crams are symptoms of lack of potassium
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A reaction in which a substance reacts with oxygen, emitting heat and forming oxygen-containing compounds is an example of a(n):
yaroslaw [1]

Answer: B) combustion reaction.

Explanation:

A) acid-base reaction: When an acid reacts with a base, to form metal salt and water, this type of reaction is Acid Base reaction.

Example: HCl+NaOH\rightarrow NaCl+H_2O

B) combustion reaction: When a hydrocarbon reacts with oxygen to produce carbon dioxide and water, this type of reaction is combustion reaction.

CH_4+2O_2\rightarrow CO_2+2H_2O

C) precipitation reaction: a reaction in which aqueous solution of two compounds on mixing react to form an insoluble compound which separate out as a solid are called precipitation reactions.

Na_2SO_4(aq)+BaCl_2(aq)\rightarrow BaSO_4(s)+NaCl(aq)

D) gas evolution reaction: a reaction in which one of the product is formed as a gas.

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

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3 years ago
When Luis burns wood in a campfire, the particles in the wood break down and energy is released. What type of energy does the wo
matrenka [14]

Answer:

chemical energy is stored in the wood before combustion.

8 0
3 years ago
Which describes Lithium chloride
Rasek [7]

Answer:

Lithium chloride is a white solid hygroscopic soluble in water.

8 0
2 years ago
A solution is prepared by dissolving 0.23 mol of benzoic acid and 0.27 mol of sodium benzoate in water sufficient to yield 1.00
Monica [59]

Answer:

The pH does not decrease drastically because the NaOH reacts with the <u>D) Benzoic acid</u> present in the buffer solution.

Explanation:

The hydroxide ions will react with acidic part of the solutions, it means the benzoic acid, so it will form the conjugate base, the benzoate ion.

7 0
3 years ago
Which of the following describes the correct order for relative solubility of minerals in sedimentary rocks?
NARA [144]

Answer:

Evaporate minerals are more soluble than calcite and quartz.

Explanation:

Evaporate minerals are the water soluble minerals which at higher concentration precipitate out and crystallized forming rocks.

example of chemicals present are:

chlorides and sulphates.

Quartz is silica (very less soluble, or insoluble)

Calcite is calcium carbonate, again an insoluble salt.

Thus

Evaporate minerals are more soluble than calcite and quartz.

8 0
2 years ago
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