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3 years ago

Two characteristics used to classify igneous rocks are texture and

Chemistry

2 answers:

kykrilka [37]3 years ago

8 0

Two characteristics used to classify igneous rocks are texture and Mineral Grains

igomit [66]3 years ago

7 0

Texture and minimal grains is the answer to this question

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Solid calcium hydroxide is dissolved in water until the pH of the solution is 10.44. Determine the concentration of the calcium

Orlov [11]

Answer:

1.38x10⁻⁴ M

Explanation:

First, we calculate the pOH of the solution, using the given pH:

pOH = 14 - pH

pOH = 14 - 10.44

pOH = 3.56

Now we calculate the concentration of OH⁻, using the pOH:

pOH = -log[OH⁻]

[OH⁻] = $10^{-pOH}$ = 2.75x10⁻⁴ M

Following the reaction Ca(OH)₂ → Ca⁺² + 2OH⁻, we divide [OH⁻] by 2 to calculate [Ca(OH)₂]:

[Ca(OH)₂] = 2.75x10⁻⁴ M / 2

[Ca(OH)₂] = 1.38x10⁻⁴ M

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2 years ago

Is helium a metal, non metal or metalloid?

ioda

Helium is a nonmetal. There are several reasons for this, it is unable to donate electrons and It has an extremely low melting point.

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3 years ago

Imagine a moving boat making waves in the middle of a pool of water. Also, imagine two observers, one behind the boat and one in

Simora [160]

The person who is behind the boat will see much powerful and bigger waves than the person who is in front of the boat. This phenomenon is caused by the Doppler effect which describes the changes in the observed frequency of a wave whenever there is relative motion between the wave source and the observer.

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3 years ago

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rodikova [14]

Answer:

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3 years ago

Pick a "for every" statement about copper and silver nitrate for this reaction.

maxonik [38]

From the equation of the reaction; for every 1 mole of copper, the reaction uses 2 moles of silver nitrate.

<h3>What is a reaction?</h3>

A chemical reaction involves the transformation of one chemical specie into another. The reaction is not shown here hence the question is incomplete.

However, the reaction should be of the sort; Cu + 2AgNO3 ---> Cu(NO3)2 + Cu. Thus, for every 1 mole of copper, the reaction uses 2 moles of silver nitrate.

Learn more about chemical reaction: brainly.com/question/6876669

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2 years ago