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2 years ago

AYUDA XFAVOR, NO LE ENTIENDO MUY BIEN:(

Chemistry

1 answer:

tatiyna2 years ago

6 0

Answer:

A. total aumenta

Explanation:

8g + 4.04g = 12.04g

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The table above shows data collected on five apples while doing field research outside the laboratory. What type of lab equipmen

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D a gram scale would measure grams

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3 years ago

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Acetic acid, CH3CO2H, reacts with ethanol, C2H5OH, to form water and ethyl acetate, CH3CO2C2H5. The equilibrium constant for thi

Irina-Kira [14]

Explanation:

The initial concentrations for a mixture :

Acetic acid at equilibrium = 0.15 M

Ethanol at equilibrium = 0.15 M

Ethyl acetate at equilibrium = 0.40 M

Water at equilibrium = 0.40 M

$CH3COOH + C_2H_5OH\rightleftharpoons CH_3CO_2C_2H_5+H_2O$

Initially:

0.15 M 0.15 M 0.40 M 0.40 M

At equilibrium

(0.15-x)M (0.15-x) M (0.40+x) M (0.40+x) M

The equilibrium constant is given by expression

$K_c=\frac{[CH_3CO_2C_2H_5][H_2O]}{[CH_3COOH][C_2H_5OH]}$

$4.0=\frac{(0.40-x)\times (0.40-x)}{(0.15+x)\times (0.15+x)}$

Solving for x:

x = 0.0333

The equilibrium concentrations for a mixture :

Acetic acid at equilibrium = (0.15-x)M = (0.15-0.033) M = 0.117 M

Ethanol at equilibrium = (0.15-x)M = (0.15-0.033) M = 0.117 M

Ethyl acetate at equilibrium = (0.40+x)M = (0.40+0.033) M = 0.433 M

Water at equilibrium = (0.40+x)M = (0.40+0.033) M = 0.433 M

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3 years ago

Bodies at _____ tend to remain at rest.

Klio2033 [76]

Answer:

Explanation:

Newton's 3rd law of motion: Inertia. It states that bodies at rest tend to stay at rest.

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3 years ago

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Marat540 [252]

Answer:

The correct option is <em>A) The light moths will be captured by predators more easily than the dark moths, and the population of dark moths will rise.</em>

Explanation:

As we can see, the colour of the trees do not match with the light moths. Instead, the colour of the trees resembles the dark moths. This adaptation will work best for the dark moths to protect it from its predators. The light moths lack this adaptation and can easily be attacked by the predators. Hence, the population of the dark moth will increase as they are better adapted to live in such an environment.

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3 years ago

Question # 10

satela [25.4K]

The answer should be D, cells can only create an identical copy of the original cell.

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3 years ago