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3 years ago

Periodicity is best defined as:

Chemistry

2 answers:

Elis [28]3 years ago

7 0

The repeating nature of physical and chemical properties with increasing atomic number.

qwelly [4]3 years ago

6 0

Answer:the quality or character of being periodic; the tendency to recur at intervals.

"the periodicity of the sunspot cycle"

Explanation:

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Which is true of a solute dissolved in a solvent?

Elza [17]

The solute increased to the boiling point of the solvent. In shorter terms it's raising to the boiling point.

6 0

3 years ago

Read 2 more answers

The elementary reaction 2H2O(g)↽−−⇀2H2(g)+O2(g) 2H2O(g)↽−−⇀2H2(g)+O2(g) proceeds at a certain temperature until the partial pres

Dima020 [189]

Answer:

$6.25\times 10^{-6}$ is the value of the equilibrium constant at this temperature.

Explanation:

Equilibrium constant in terms of partial pressure is defined as the ratio of partial pressures of products to the partial pressures of reactants each raised to the power equal to their stoichiometric ratios. It is expressed as $K_{p}$

$2H_2O(g)\rightleftharpoons 2H_2(g)+O_2(g)$

Partial pressures at equilibrium:

$p^o_{H_2O}=0.070 atm$

$p^o_{H_2}=0.0035 atm$

$p^o_{O_2}=0.0025 atm$

The equilibrium constant in terms of pressures is given as:

$K_p=\frac{(p^o_{H_2})^2\times (p^o_{O_2})}{(p^o_{H_2O})62}$

$K_p=\frac{(0.0035 atm)^2\times 0.0025 atm}{(0.070 atm)^2}=6.25\times 10^{-6}$

$6.25\times 10^{-6}$ is the value of the equilibrium constant at this temperature.

5 0

3 years ago

What is the relationship between the reactant and yield

solong [7]

Yield is the measured amount of a product obtained from a reaction.

Hope that's helpful

7 0

3 years ago

Ions are formed when atoms a) gain or lose protonsb) gain or lose electronsc) gain or lose neutrons d) each of these results in

lesya692 [45]

Answer:

b) Gain or lose electrons

Explanation:

An ion is an electrically charged particle. For an atom to be charged, it must have gained or lost electron in the process and therefore, it becomes an ion.

The loss or gain of electrons is what makes an atom charged and eventually becomes an ion.

A positively charged ion is one that has lost an electron and it is called a cation. In such an ion, the number of electrons are lesser than those of protons. This is why they are cations

A negatively charged ion is one that has gained electrons. They are called anions. In such an ion, the number of electrons are greater than that of protons.

5 0

3 years ago

Define the following terms. a. Capillary action b. Chromatogram

jonny [76]

Answer:

1.Capillary action is important for moving water (and all of the things that are dissolved in it) around. 

2.the pattern formed on an adsorbent medium by the layers of components separated by chromatography. 

Explanation:

hope this help you

6 0

2 years ago