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vagabundo [1.1K]

3 years ago

15

What role does the mantle play in the rock cycle?

2 answers:

solniwko [45]3 years ago

7 0

Glaciers are an important part of the rock life cycle. The part they play is to break huge rock faces into smaller pieces, as well as to move rocks from one place to another, while grinding them into pebbles and sand.

UkoKoshka [18]3 years ago

3 0

Weathering and Erosion. They are part of the process.
@Google.

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What is the potential energy of a 2-kg book sitting on a shelf 2 meters above<br> the ground?

lys-0071 [83]

Answer:

Explanation:

<u><em>What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?</em></u>

<em></em>

PE = MGH, that is, potential energy = mass x gravity x height.

2*2*9.8=

39.2 joules

8 0

2 years ago

28 Which compound yields H + ions as the only positive ions in an aqueous solution?

MrMuchimi

Answer: (4) $CH_3COOH$

Explanation:-

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydronium ions $(H_3O^+)$ in water.

1. $KOH$ is a strong electrolyte and thus dissociate in water. $KOH\rightarrow K^++OH^-$

2. $CH_3OH$ is a non electrolyte and thus do no dissociate in water.

$CH_3COOH\rightarrow no reaction$

3. $NaOH$ is a strong electrolyte and thus dissociate in water.

$NaOH\rightarrow Na^++OH^-$

4. $CH_3COOH$ is a weak electrolyte and thus partially dissociate in water.

$CH_3COOH\rightleftharpoons CH_3COO^-+H^+$

4 0

3 years ago

Using the phase diagram for CO2, what phase is carbon dioxide in at -20°C

djyliett [7]

Answer:

A. It is in the gas phase.

Explanation:

it was correct on ap3x :)

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3 years ago

(BRAINLIEST ANSWER GUARANTEED) Write the chemical formula for the following compound

Minchanka [31]

Answer:

HNO3

Explanation:

Try looking up on the internet-

"Science compound creator" and plug in the compounds it gives, and it will give you a formula.

3 0

3 years ago

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What is the volume of 1.9 moles of chlorine gas (Cl2) at 298 K and 1.3 atm?

kap26 [50]

Considering ideal gas behavior, the volume of 1 mol of gas at STP is 22.4 L; then the volume occupied by 1.9 moles is 1.9mol*22.4L/mol

The answer is 43 L if I am correct.

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3 years ago

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