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Sveta_85 [38]
3 years ago
13

In the future, clean energy sources, such as solar power, may be used to create hydrogen fuel

Chemistry
1 answer:
saw5 [17]3 years ago
3 0

Answer: true

Explanation:

we will need to start using clean resources for our environment will collapse

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What is the ph of a 0.45 m solution of aniline (c6h5nh2)? (pkb  9.40)?
mote1985 [20]

Answer is: pH of aniline is 9.13.<span>
Chemical reaction: C</span>₆H₅NH₂(aq)+ H₂O(l) ⇌ C₆H₅NH₃⁺(aq) + OH⁻(aq).

pKb(C₆H₅NH₂) = 9.40.

Kb(C₆H₅NH₂) = 10∧(-9.4) = 4·10⁻¹⁰.

c₀(C₆H₅NH₂) = 0.45 M.

c(C₆H₅NH₃⁺) = c(OH⁻) = x.

c(C₆H₅NH₂) = 0.45 M - x.

Kb = c(C₆H₅NH₃⁺) · c(OH⁻) / c(C₆H₅NH₂).

4·10⁻¹⁰ = x² /  (0.45 M - x). 

Solve quadratic equation: x = c(OH⁻) = 0.0000134 M.

pOH = -log(0.0000134 M.) = 4.87.

pH = 14 - 4.87 = 9.13.

7 0
3 years ago
What is the mass (in g) of 0. 935 mol of acetone CH3COCH3 the molar mass of acetone is 58. 08 g∙mol^–1.
Ray Of Light [21]

Answer:

54.30 grams acetone

Explanation:

(0. 935 mol)*(58.08 g/mole) = 54.30 grams acetone

4 0
1 year ago
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Which two subatomic particles are located in the nucleus of an atom?
natta225 [31]

Two subatomic particles that are located in the nucleus of an atom are Protons and Neutrons.

4 0
3 years ago
Explain the role of each factor in chemical weathering (water, acid, and air).
Mama L [17]

Answer: hydrolysis oxidation acidification

Explanation:

they break down, dissolve, or create new elements

7 0
2 years ago
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velikii [3]
I can’t see what image you have to refer too but India is now part of the rest of Asia due to continental plates running into eachother.
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3 years ago
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