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Fiesta28 [93]
3 years ago
10

Where are four places a body fossils naught be created.

Chemistry
1 answer:
Oliga [24]3 years ago
5 0
<span>Body fossils can mostly be found in things like rocks and minerals deep in the ground or in mountains and caves. They can also be found in quick drying substances such as for example tar pits or basically anywhere where there has been historically chance of encountering a fossil. You can also find them in peat, so that's 4 then.</span>
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Identify the type of reaction in the chemical reaction below:
Morgarella [4.7K]

Complete question is;

Identify the type of reaction in the chemical reaction below:

2P205 ➡️ 4P + 502

single replacement

synthesis

decomposition

combustion

double replacement

Answer:

Decomposition

Explanation:

We. An see in the question that the compound 2P205 is broken down into simpler substances which are phosphorus (P) and oxygen (O).

Now, this is a decomposition reaction because a decomposition reaction is one in which a compound is broken down into simpler substances

6 0
3 years ago
A precipitate will form when a freshly prepared aqueous carbonic acid solution is added to an aqueous solution of
galben [10]

Answer:

A precipitate will form when a freshly prepared aqueous carbonic acid solution is added to an aqueous solution of Calcium Hydroxide.

Explanation:

3 0
3 years ago
How can you distinguish between a physical change and a chemical change?
AleksAgata [21]

Answer:

Physical Change

  • When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
  • Physical change is a temporary change.
  • A Physical change affects only physical properties i.e. shape, size, etc.
  • A physical change involves very little to no absorption of energy.
  • Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. .
  • In a physical change, no new substance is formed.
  • Physical change is easily reversible i.e original substance can be recovered.

Chemical Change

  • When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.
  • .A chemical change is a permanent change.
  • Chemical change both physical and chemical properties of the substance including its composition
  • During a chemical reaction, absorption and evolution of energy take place.
  • A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
  • A chemical change is always accompanied by one or more new substance(s).
  • Chemical changes are irreversible i.e. original substance cannot be recovered.
8 0
3 years ago
What is the enthalpy of the reaction?
Bas_tet [7]
Enthalpy change = energy products -
energy reactants

Standard enthalpy change of a reaction is the energy change when the number of moles of reactant in a reaction react together to form products under standard condition.

Hope it helped!
8 0
4 years ago
Nearly every compound of silicon has the element in the ⁺4 oxidation state. In contrast, most compounds of lead have the element
baherus [9]

Boron shows analogous behaviour with silicon. Every compound of Boron have +3 oxidation state, while as we go down the the oxidation state become +1 and +3. For example, gallium, indium, etc.

Similarly, every compound of silicon has the element in the ⁺4 oxidation state. In contrast, most compounds of lead have the element in the ⁺2 state because of inert pair effect.

<h3>What is Inert pair effect? </h3>

The inert-pair effect is defined as the tendency of two electrons in the outermost atomic s-orbital almost remain unshared in the compounds of the post-transition metals.

<h3>How we calculate Oxidation state? </h3>
  • Each atom in an element either be in its uncombined or free state has oxidation number of zero. Such as each atom in H₂, Cl₂ , P4, ,O₂ , Na, Al, O3, S8, and Mg, all have an oxidation number zero.
  • The oxidation state of ions that comprise of only one atom is the actual charge on the ion.
  • The oxidation state of hydrogen is +1, excluding when it is bonded to metals having two elements. For example, CaH2, its oxidation state is –1.
  • Fluorine and other halogens have an oxidation state equal to –1 when they appear as a form of halide ions in their compounds.

Since the inert pair effect increases as we go down the group and become more predominant, therefore, the stability of +2 oxidation state goes on increasing down the group. Therefore, gallium, indium are mostly found in +1 oxidation state.

Thus, we concluded that Boron shows analogous behaviour with silicon. Every compound of Boron have +3 oxidation state, while as we go down the the oxidation state become +1 and +3. For example, gallium, indium, etc.

learn more about oxidation state:

brainly.com/question/25551544

#SPJ4

4 0
2 years ago
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