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3 years ago

Reasons why cells are important to human life?

Chemistry

1 answer:

guajiro [1.7K]3 years ago

4 0

Answer:

<h2>Cells are important for living organisms because cells are the basic building blocks from which all organisms are created.</h2>

Explanation:

While some organisms are comprised of a single cell, others are multicellular entities with different cell types. Humans, for example, have many different types of cells, including nerve cells, skin cells and fat cells.

I hope this helps

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How is the Sun related to day and night and the change of seasons?

atroni [7]

Explanation:

As the Earth moves around the sun during a year, the northern half of the Earth is tilted towards the sun in the summer, making daytime longer than night. In winter, this reverses; the earth tilts away from the sun and nighttime becomes longer

4 0

3 years ago

Read 2 more answers

Write the equilibrium constant expression for the following reaction in terms of concentrations of the components. (Concentratio

timofeeve [1]

<u>Answer:</u> The expression for equilibrium constant in terms of concentration is $K_c=[CO_2]$

<u>Explanation:</u>

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric coefficients. It is represented by $K_{c}$

For a general chemical reaction:

$aA+bB\rightarrow cC+dD$

The $K_{c}$ is written as:

$K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

The concentration of pure solids and pure liquids are taken as 1.

For the given chemical reaction:

$MgCO_3(s)\rightarrow MgO(s)+CO_2(g)$

The expression for $K_{c}$ is:

$K_{c}=\frac{[MgO][CO_2]}{[MgCO_3]}$

In the above expression, magnesium oxide and magnesium carbonate will not appear because they are present in solid state.

So, the expression for $K_c$ becomes:

$K_{c}=[CO_2]$

Hence, the equilibrium constant for the reaction is given above.

4 0

3 years ago

Which environmental concern does not apply to wind power?

wolverine [178]

<h2>Answer:</h2>

The correct answer is option C which is chemical waste.

<h3>Explanation:</h3>

Wind is the renewable source of the energy. The air has energy in it which is used to run the generator to produce electrical energy from the mechanical energy of wind.
Wind energy is perfect in sense of pollution. It does not create any chemical waste because there is no conversion or production of chemical energy involve in this energy production.
While bats and birds death is caused by the fans used to run generators and a huge noise is also created by the wind energy production.

3 0

4 years ago

????????????????????????<br>thanks

sashaice [31]

D. I, II, and IV. Basically everything but the temperature.

6 0

4 years ago

An Amount of carbon – 12 Atoms equal to Avogadro‘s number would have a mass of exactly

mamaluj [8]

Explanation:

the answer is C12 grams

5 0

3 years ago