Each atom of an element has the following electron configuration.

ValentinkaMS [17]

Answer:

B or C

Explanation:

Alchemy rely a lot on the spiritual connections to the four elements and they are fire, water, earth and air while chemistry is a lot more logical, factual and scientific based. Also, chemistry is considered as science, while alchemy is not.

Alchemy was based more on experimentation and had little basis in science. Chemistry utilizes both experimentation and scientific practices. Modern chemistry basically relies on scientific theories and experimental results, but the alchemy was a blend of myths, religion, magic, astrology, philosophy, and spirituality.

4 0

3 years ago

Read 2 more answers

What is the percent by mass of the solution formed when 5.0 g of solute is dissolved in 40. g of water

d1i1m1o1n [39]

Answer:

2

Explanation:

so let say 5.0/100×40

that is 2

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7 0

3 years ago

NH3 + HCI —> NH4CI synthesis O decomposition O single replacement O double replacement

wlad13 [49]

Answer:

synthesis

Explanation:

The reaction given is a synthesis reaction or combination reaction.

Given equation:

NH₃ + HCl → NH₄Cl

In a synthesis reaction, a single product is formed from two or more reactants

A + B → C

The formation of compounds from the union of constituent elements also falls into this category.

So the given reaction is a synthesis reaction.

In a decomposition reaction two or more products are formed from a single reactant

In a single replacement reaction, one substance replaces another.

In double replacement reactions partners in a chemical specie are exchanged.

Therefore the given reaction is a synthesis reaction

8 0

3 years ago

CuSO^4 is an example of a(n)_____.

GarryVolchara [31]

Answer:

Compound.

Explanation:

That would be compound as it consists of a number of elements bonded together. It is inorganic not organic.

3 0

4 years ago

Identitfy the types of reaction:

Vera_Pavlovna [14]

Answer:

C2H5OH + Na = C2H5ONa + H2 - Single replacement reaction

AgCl + HNO3 = AgNO3 + HC - Double replacement reaction

N2 + H2 = NH3 - Combination reaction

MgCO3 = MgO + CO2 - Decomposition reaction

Explanation:

Single replacement reaction - The type of reaction in which one strong ion replaces the weak ion from the solution.

For example: C2H5OH + Na = C2H5ONa + H2

Double replacement reaction - The reaction in which two compounds in a solution reacts by interchanging their ions and forms a new product.

For example: AgCl + HNO3 = AgNO3 + HCl

Combination reaction - The type of reaction in which two or more compounds combine together to form a single compound.

For example: N2 + H2 = NH3

Decomposition reaction - The type of reaction in which only one compounds break down into two or more new compounds.

For example: MgCO3 = MgO + CO2

Hence, the correct answer is:

C2H5OH + Na = C2H5ONa + H2 - Single replacement reaction

AgCl + HNO3 = AgNO3 + HC - Double replacement reaction

N2 + H2 = NH3 - Combination reaction

MgCO3 = MgO + CO2 - Decomposition reaction

7 0

4 years ago