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Alex17521 [72]
3 years ago
14

I have 7 more questions left :’)

Chemistry
2 answers:
dedylja [7]3 years ago
8 0
A, B for the first two
son4ous [18]3 years ago
4 0
The 3rd question ranks: XZYW
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Consider an amphoteric hydroxide, M ( OH ) 2 ( s ) , where M is a generic metal. M ( OH ) 2 ( s ) − ⇀ ↽ − M 2 + ( aq ) + 2 OH −
kvv77 [185]

Answer:

1(374€×737€÷63718477284™>)2638185837+2737=12837

8 0
3 years ago
Acetic acid (CH3COOH) is a weak acid that partially dissociates in water. Given the reaction CH3COOH(aq) ↔ CH3COO−(aq) + H+(aq)
likoan [24]

Answer:

The correct answer is: 1.035 x 10⁻³ M

Explanation:

The dissociation equilibrium for acetic acid (CH₃COOH) is the following:

CH₃COOH(aq) ↔ CH₃COO⁻(aq) + H⁺(aq)  Kc = 1.8 x 10⁻⁵

The expression for the equilibrium constant (Kc) is the ratio of concentrations of products over reactants. The products are acetate ion (CH₃COO⁻) and hydrogen ion (H⁺) while the reactant is acetic acid (CH₃COOH):

Kc=\frac{[CH_{3} COO^{-} ][H^{+} ]}{[CH_{3} COOH]}= 1.8 x 10^{-5}

Given: [CH₃COOH]= 0.016 M and [CH₃COO⁻]= 0.92 M, we replace the concentrations in the equilibrium expression and we calculate [H⁺]:

\frac{(0.016 M)[H^{+} ]}{(0.92M)}= 1.8 x 10^{-5}

⇒[H⁺]= (1.8 x 10⁻⁵)(0.92 M)/(0.016 M)= 1.035 x 10⁻³ M

8 0
3 years ago
Which geological feature is caused mainly by glacial erosion? O A. geyser O B. fault line O c. lava flow O D. U-shaped valley​
Kamila [148]

Answer:

i think it is C

Explanation: hope this helps :)

6 0
3 years ago
Read 2 more answers
The heat exchange in chemical reactions is due to a change in:
Paha777 [63]

Answer:

B

Explanation:

This would be due to enthalpy. This is because that this where heat exchange happens in chemical reactions.

So, a positive enthalpy means that the reaction is endothermic (heat entering) and if enthalpy is negative this will be a exothermic (heat released)

Another example would be the use of atoms. This example if temperature is the factor, this means that at low temp there is less kinetic energy so low temperature. However, an increase in energy means that there is more kinetic energy in the atoms which means that more collisions occurring.

Hope this helps !!!!

Have a nice day :)

5 0
3 years ago
Solid solutions where one metal is dissolved in another is known as a(n) _____________.
krok68 [10]

Answer:

ionic solution

Explanation:

when is dissleves its ionic

8 0
3 years ago
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