Answer:
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Answer:
When the molecules are too large.
Explanation:
Facilitated diffusion refers to the passive transport of substances down the concentration gradient via specific transport proteins present in the membrane. The large, polar, charged substances and ions cannot pass through the small spaces present between hydrophobic tails of membrane phospholipids. The transport proteins transport these substances in energy independent manner.
<u>Answer:</u>
<em>Paul Ehrlich brought to focus the problem of environmental Pollution and the Climate change, the argument that is responsible for the world’s environmental problems.</em>
<u>Explanation:</u>
<em>Paul Ehrlich</em> stated that we are unprepared to face the effects of the environmental problems. The environmental problem has arisen due to the over consumption of the<em> resources according to Ehrlich. </em>
According to him we have already released enough <em>amount of poisonous substances</em> in the environment which affects our human tissue in a bad way. Ehrlich states that fate of humanity is going to collapse if the activities of <em>exploitation of environment</em> is left unchecked.
I need a pic of the question plz
Answer:
Explanation:
When the sample of hot metal is placed inside the water, the metal gives off heat to the water: the temperature of the metal decreases while the temperature of the water increases, until the two reach an equilibrium temperature.
The heat given off by the metal is equal (in magnitude) to the heat absorbed by the water, so we can write:
where:
is the mass of the metal
is the specific heat of the metal
is the initial temperature of the metal
is the equilibrium temperature
is the mass of the water
is the specific heat of water
is the initial temperature of the water
And solving for , we find the specific heat of the metal:
