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stiks02 [169]
3 years ago
7

Does the biosphere have clear boundaries

Chemistry
1 answer:
Ne4ueva [31]3 years ago
7 0

No, the biosphere does not exhibit a clear boundary as life always comes to an end.  

The biosphere comprises all the living things of the world, like all the plants and animals. It is considered as the global ecosystem, that is, the gathering of all the planet's ecosystems. It comprises the land and the atmosphere. It is usually considered as the zone of life, where all the species of the planet thrives.  


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When it is operating properly a chemical plant?
Alexxandr [17]
The operating properly of a chemical plant would have to the same property of any chemicals but its in a plant form instead of test tubes it would have a stem and leaves and you could squeaz the plant and get it out of the plant
4 0
3 years ago
Which part of potato plant stores food?<br>​
lukranit [14]

Answer:

Explanation:

The answer is rooot ok

3 0
3 years ago
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What is the molar volume of a gas at standard temperature and pressure?
Andrej [43]

Answer: The molar volume of any gas at standard pressure and standard temperature is 22.4 liters per mole.

Explanation:The ideal gas law is PV=nRT

P is pressure and if we consider standard pressure, then we have 1.00 atm.

V is volume and that is what we are trying to solve.

n is the number of moles, which is 1.00 moles since we are trying to determine the volume of a gas in one mole.

R is the ideal gas constant which equals

0.0821 (Liters x atmospheres)/(mole x kelvin)

T is the standard temperature which is 273 kelvin.

Rearrange the equation to solve for volume.

V = nRT/P

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4 0
3 years ago
A certain first-order reaction is 27.5 percent complete in 8.90 min at 25°C. What is its rate constant?
jeyben [28]

Answer:

k= 0.145min^{-1}

Explanation:

Hello there!

In this case, according to the given information, it turns out necessary for us remember that the first-order kinetics is given by:

ln(A/A_0)=-kt

Whereas the 27.5% complete means A/Ao=0.275, and thus, we solve for the rate constant as follows:

k=\frac{ln(A/A_0)}{-t}

Then, we plug in the variables to obtain:

k=\frac{ln(0.275)}{-8.90min}\\\\k= 0.145min^{-1}

Regards!

4 0
3 years ago
An artifact originally had 16 grams of​ carbon-14 present. the decay model upper a equals 16 e superscript negative 0.000121 ta=
xeze [42]

<u>Given:</u>

Initial amount of carbon, A₀ = 16 g

Decay model = 16exp(-0.000121t)

t = 90769076 years

<u>To determine:</u>

the amount of C-14 after 90769076 years

<u>Explanation:</u>

The radioactive decay model can be expressed as:

A = A₀exp(-kt)

where A = concentration of the radioactive species after time t

A₀ = initial concentration

k = decay constant

Based on the given data :

A = 16 * exp(-0.000121*90769076) = 16(0) = 0

Ans: Based on the decay model there will be no C-14 left after 90769076 years

3 0
4 years ago
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