3 years ago

Which of the following parts of a forest ecosystem could not become a fossil?

Chemistry

2 answers:

Paladinen [302]3 years ago

3 0

C. a puddle it’s kinda just common sense

asambeis [7]3 years ago

3 0

Answer:

Explanation:

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1 calorie is equal to A. 4.184 J B. 1,000 J C. 6.02x10^23 J D. 8.314 J

FromTheMoon [43]

The answer to your question is A 4.184 J

5 0

3 years ago

The decomposition of dinitrogen pentoxide, N2O5, to NO2 and O2 is a first-order reaction. At 60°C, the rate constant is 2.8 × 10

Ugo [173]

Answer:

The correct option is a.

Explanation:

$2N_2O_5\rightarrow 4NO_2 + O_2$

125 kPa

125kpa - 2x 4x x

Total pressure after reaction = 176 kPa

125 kPa - 2x + 4x + x = 176 kPa

x = 17

125 kpa - 2x = 125 kPa - 2(17) = 91 kPa

Initial pressure of the dinitrogen pentoxide ,(at t=0) = $P_o= 125 kPa$

Final pressure of the dinitrogen pentoxide, (at t = t) = P = 91 kPa

The rate constant is = $k = 2.8\times 10^{-3} min^{-1}$

$t=\frac{2.303}{k}\log\frac{P_o}{P}$

$t=\frac{2.303}{2.8\times 10^{-3} min^{-1}}\log\frac{125 kPa}{91 kPa}$

$t=113.3969 minutes\approx 113 minutes$

It will take 113 minutes for the total pressure to reach 176 kPa.

8 0

3 years ago

Covalent solutes are considered non-electrolytes. What does this mean for the conductivity of the solution? A) Non-electrolytes

iogann1982 [59]

Electrolytes are those which dissociates in solution and produces ions.

Ions can carry current,so Electrolytes conduct electiricity.

And non electrolytes are those which do not dissociate in solution and doesnt produce ions.

Since non electrolytes do not produce ions they cannot conduct electricity.

Hence the right option is:

B) Non-electrolytes dissolve and do not dissociate in water providing no charged ions to conduct electricity.

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3 years ago

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if you obtain the powder of a mineral by rubbing a mineral on a porcelain plate, which property have u observed?

charle [14.2K]

you have observed streak :)

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3 years ago

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Choose all the materials that S-waves cannot travel through.

crimeas [40]

Answer:

water

Explanation:

liquid don't have any shear strength and so a shear wave cannot propagate through a liquid.

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3 years ago