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Tema [17]
3 years ago
12

Which of the following elements has the smallest atomic radius?

Chemistry
2 answers:
Yuliya22 [10]3 years ago
8 0

Answer:

helium is the smallest element and francium is the largest

erastova [34]3 years ago
6 0

Answer:

K+ is the right answer

Explanation:

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Which of the following is true for the equilibrium constant of a reaction?
CaHeK987 [17]

Answer:

The correct answer is <em>It is a ratio of the concentrations in a reaction.</em>

Explanation:

⇒ It is a ratio of the concentrations in a reaction.

This sentence is true because the equilibrium constant is calculated from the product of the concentration of the reaction products divided into the product of the concentrations of the reactants, each concentration raised by the stoichiometric coefficient. For example, for the following reaction:

aA + bB → cC + dD

The equilibrium constant is expressed as:

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

⇒ It remains the same at different temperatures.

The sentence is false because the equilibrium constant changes with the temperature. In general, an endothermic reaction is favored by the increment of temperature (the equilibrium shifts to the right side) and disfavored with the decrease in temperature (shifts to the left).

⇒ It is represented by the symbol H.

This sentence is false because the equilibrium constant is represented with the letter K.

⇒ Its value is always close to 1.

It is not true because the equilibrium constant can be a number below or above 1.

K < 1 ⇒ there is more concentration of reactants at equilibrium

K > 1 ⇒ there is more concentration of products at equilibrium

4 0
2 years ago
A dependent variable is
Ivanshal [37]

Answer:

a variable (often denoted by y ) whose value depends on that of another.

Explanation:

a variable (often denoted by y ) whose value depends on that of another.

7 0
3 years ago
Is air an element, compound or mixture? explain your answer
emmainna [20.7K]

It is a mixture because the compounds that make up air e.g. oxygen (o2), Carbon dioxide (co2) and the most important Nitrogen which is an element and makes up 78.09% of air are not chemically bound in the way that compounds are because they can be separated easily and there has been no change in state to any of the compounds or elements in air!hope this helpful!

3 0
3 years ago
Read 2 more answers
What is symbol, molecule, electrovalent compound?​
jok3333 [9.3K]

Answer:

the abbreviation form of full name is called symbol.

the smallest unit of cimpound is called molecule.

8 0
3 years ago
Is Lilium lancifolium Heterotroph, Autotroph, or Both
Sphinxa [80]
Lilium lancifolium is an autotroph since it is a plant and makes its own food through photosynthesis.
4 0
2 years ago
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