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Bess [88]
4 years ago
7

9

Chemistry
1 answer:
ioda4 years ago
6 0
Your answer is B. Acid rain might destroy ecosystems and farmland
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Besides Mars, what other bodies in our solar system are considered the most likely places for the discovery of some form of life
Alisiya [41]

Answer:

Europa

Explanation:

it is though that to have a subsurface liquid of water

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What type of mutation causes sickle cell anemia?
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It is a mutation of the gene that makes hemoglobin, hemoglobin is a protein that carries oxygen in red blood cells.
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Two or more substances in variable proportions, where the composition is variable throughout are a a homogeneous mixture. b a so
REY [17]

<u>Answer:</u> In heterogeneous mixture, the composition remains variable throughout.

<u>Explanation:</u>

For the given options:

Homogeneous mixtures are defined as the mixtures that appears uniformly throughout the solution and the particle size or shapes are not different. The composition remains constant throughout.

A solution is defined as the solution in which the components gets completely dissolved in it. Particles are evenly spread in these solutions. These solution does not scatter light falling on it. The composition remains constant throughout.

An amorphous solid is defined as the solid in which the constituent particles of the matter are arranged in the random manner. The composition remains constant throughout.

A heterogeneous mixture is defined as the mixture in which component are unevenly spread throughout the solution. The size and shape of the particles differ in these mixtures. These mixture scatter the light falling on it.  The composition do not remains constant throughout.

Compound is defined as the chemical specie which is formed by the combination of two or more different type of atoms. <u>For Example:</u> H_2O,O_2 etc...The composition remains constant throughout.

Hence, in heterogeneous mixture, the composition remains variable throughout.

4 0
4 years ago
PLZ HELP
riadik2000 [5.3K]
Too many to know in the world.
8 0
4 years ago
A solution contains 0.021 M Cl? and 0.017 M I?. A solution containing copper (I) ions is added to selectively precipitate one of
slavikrds [6]

Answer:

A precipitate will begin to form at [Cu+] = 3.0 *10^-10 M

The precipitate formed is CuI

Explanation:

Step 1: Data given

The solution contains 0.021 M Cl- and 0.017 M I-.

Ksp(CuCl) = 1.0 × 10-6

Ksp(CuI) = 5.1 × 10-12.

Step 2:  Calculate [Cu+]

Ksp(CuCl) = [Cu+] [Cl-]  

1.0 * 10^-6  = [Cu+] [Cl-]  

1.0 * 10^-6  = [Cu+] [0.021]  

[Cu+] = 1.0 * 10^-6 / 0.021

[Cu+] = 4.76 *10^-5 M

Ksp(CuI) = [Cu] [I]  

5.1 * 10^-12  = [Cu+] [I-]  

5.1 * 10^-12 =[Cu+] [0.017]  

[Cu+] = 5.1 * 10^-12 / 0.017

[Cu+] = 3.0 *10^-10 M

[Cu+]from CuI hast the lowest concentration

A precipitate will begin to form at [Cu+] = 3.0 *10^-10 M

The precipitate formed is CuI

5 0
3 years ago
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