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3 years ago

The environment with the greatest biodiversity is the one with the greatest variety of

Chemistry

1 answer:

ValentinkaMS [17]3 years ago

5 0

Answer: species

Explanation:

The biodiversity can be defined as variety of life form in a area concerned or in all the parts of the world. The environment with the greatest biodiversity will have the greatest variety of species. Each species will boost the productivity of the ecosystem as each species has a roe to be played in an ecosystem. For example, a larger number of plant species will result in greater variety of crops. The higher species diversity will ensure the sustainability of all life forms in an ecosystem.

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Order the atoms from largest to smallest: Cs , Si , Sn .

dimaraw [331]

Answer:

Si, Sn, Cs

Explanation:

Atomic no. Atomic radius

Silicon Si_______14___________0.117
Tin Sn______50___________0.140
cesium Cs______55___________0.262

Silicon is the smallest among these

4 0

2 years ago

The equilibrium constant for the reaction

FinnZ [79.3K]

Answer: The concentrations of $Cl_2$ at equilibrium is 0.023 M

Explanation:

Moles of $Cl_2$ = $\frac{\text {given mass}}{\text {Molar mass}}=\frac{10g}{71g/mol}=0.14mol$

Volume of solution = 1 L

Initial concentration of $Cl_2$ = $\frac{0.14mol}{1L}=0.14M$

The given balanced equilibrium reaction is,

$COCl_2(g)\rightleftharpoons CO(g)+Cl_2(g)$

Initial conc. 0.14 M 0 M 0M

At eqm. conc. (0.14-x) M (x) M (x) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[CO]\times [Cl_2]}{[COCl_2]}$

Now put all the given values in this expression, we get :

$4.63\times 10^{-3}=\frac{x)^2}{(0.14-x)}$

By solving the term 'x', we get :

x = 0.023 M

Thus, the concentrations of $Cl_2$ at equilibrium is 0.023 M

7 0

3 years ago

An undergraduate weighed out 20grams of sodium hydroxide pellets. If Na =23, O = 16 andH = 1, What is the mole of this sodium hy

tatuchka [14]

The answer would be .5 mols because you take the total amount of grams, which is 20, and you had up the molar mass of sodium hydroxide, which would be 40. After you have this you would set this up as a stochiometry equation. With 1 mol on top you dived 20/40 to cancel out your grams. This leaves you with .5 mols

3 0

3 years ago

The octet rule states that, in chemical compounds, atoms tend to have _____.

olga nikolaevna [1]

The correct answer is C

4 0

3 years ago

How does a liquid substance change into gas?

Afina-wow [57]

Answer: heat

Explanation:

Is that heat boils the liquid and the liquid eventually evaporated into gas

3 0

3 years ago