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3 years ago

Fill in the blanks At rest the frog breathes through________

Chemistry

2 answers:

Mama L [17]3 years ago

5 0

Answer:

a process called predominate?

Nadya [2.5K]3 years ago

3 0

Answer:

the lining of the mouth

Explanation:

its in their predominate form

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Why does a tadpole reabsorb its tail into its body?

adelina 88 [10]

Answer:

The cells mutated.

Explanation:

Lysosomes is the cell that digest the unwanted materials in the cytoplasm.

3 0

3 years ago

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Which Of These Is An Indication That A Chemical Reaction Has Occurred?

nikdorinn [45]

Answer:

Correct option is D. Formation Of A Gas

Explanation

The main indication of chemical is that new substances are formed which have different composition than reactant.

Freezing of a substance: As in this case composition remained same, so we cant say, chemical reaction is take place, like when water freezes, it composition is same as water , so it is only its physical properties, not chemical.

Melting of a substance: As in this case composition remained same, so we cant say, chemical reaction is take place, like when ice melts, composition of water remained same , so it its physical properties, not chemical.

Boiling of a substance: As in this case composition remained same, so we cant say, chemical reaction is take place, like when water boils and become vapors, composition of water and vapors remained same , so it its physical properties, not chemical properties which show its chemical reaction.

Formation of gas:

In this case, chemical reaction take place. In chemical reactions, new substance are formed whose composition is different from reactants.

6 0

3 years ago

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When balancing a chemical equation can you adjust the number that is subscripted to a substance formula?

Ugo [173]

No, you can't do that

3 0

3 years ago

Identify which trends in the diagrams below describe atomic radius, ionization energy, electron affinity, and electronegativity.

mihalych1998 [28]

a) figure describe ionization energy , electron affinity & electron negativity

b) figure describe Atomic Radius

c) does represent anything

Electronegativity : An atom attracted the bond pair of electrons in a covalent bond is called electronegativity of an element. H-->Cl

Ionization energy : The amount of energy is required to remove of an electron from an isolated gas atom is called Ionization energy. M + IP-----> M+ + e-

Electron affinity: The amount of enery is released when an electron added to an isolated atom is called electron affinity.

X + e- ------> X- =- EA

Atomic radius ; The distance between the center of neuclies and outer most shell is called atomic radius.

8 0

3 years ago

at a particulat temperature, a smaple of pure water has a Kw of 7.7x10-14. what is the hydroxide concentration of this sample

ycow [4]

Answer: The hydroxide concentration of this sample is $3.85\times 10^{-7}$

Explanation:

When an expression is formed by taking the product of concentration of ions raised to the power of their stoichiometric coefficients in the solution of a salt is known as ionic product.

The ionic product for water is written as:

$K_w=[H^+]\times [OH^-]$