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3 years ago

The mineral copper (Cu) is composed entirely of copper atoms. To which mineral group does copper belong?

Chemistry

2 answers:

ASHA 777 [7]3 years ago

6 0

Answer:

The correct answer is native elements.

Explanation:

Rather than the free gases found in the atmosphere of the Earth, some twenty elements are found in nature in a pure or almost in a pure form, which is known as the native elements.

The native elements are differentiated into three families, that is, semi-metals, metals, and non-metals. The most usual native metals that are featured by basic crystal compositions form the three groups, known as the gold group, comprising silver, gold, lead, and copper.

DIA [1.3K]3 years ago

4 0

Answer:

Native Elements; Metallic Elements

Explanation:

You might be interested in

How many grams of kclo3 are needed to make 30.0 grams of kcl

lubasha [3.4K]

The mass of potassium chlorate, KClO₃ needed to produce 30 grams of potassium chloride, KCl is 49.33 grams

<h3>Balanced equation </h3>

2KClO₃ —> 2KCl + 3O₂

Molar mass of KClO₃ = 39 + 35.5 + (16×3) = 122.5 g/mol

Mass of KClO₃ from the balanced equation = 2 × 122.5 = 245 g

Molar mass of Kcl= 39 + 35.5 = 74.5 g/mol

Mass of KCl from the balanced equation = 2 × 74.5 = 149 g

SUMMARY

From the balanced equation above,

149 g of KCl were obtained from 245 g of KClO₃

<h3>How to determine the mass of KClO₃ needed </h3>

From the balanced equation above,

149 g of KCl were obtained from 245 g of KClO₃

Therefore,

30 g of KCl will be obtained from = (30 × 245) / 149 = 49.33 g of KClO₃

Thus, 49.33 g of KClO₃ are needed for the reaction

Learn more about stoichiometry:

brainly.com/question/14735801

7 0

2 years ago

A 5.5 g sample of a substance contains only carbon and oxygen. Carbon makes up 35% of the mass of the substance. The rest is mad

bogdanovich [222]

5.5g times ( 1-.35 )

8 0

4 years ago

Why sulphur has two melting point values

Fofino [41]

I don't know how well known/accepted this is (it's in my textbook so I'm guessing it's right), but Sulphur has two forms - the alpha and beta forms ,apparently gamma sulphur exists as well.

The alpha form is rhombic, yellow in color and has a MP of 385.8 K. The beta form is colorless and has a MP of 393 K and is formed by melting rhombic sulphur and cooling it till a crust forms on top. Poke a hole and pour out the liquid inside and you get beta sulphur. The transition point is 369K - below it, alpha sulphur is stable and above it, beta sulphur is stable. Both have helped. I had to pull out an old textbook and that's something that I don't usually do.

8 0

3 years ago

Identify the titration curve for a monoprotic weak acid titrated with a strong base.

ahrayia [7]

Answer:

Titration is a technique to determine the concentration of an unknown solution. As illustrated in the titration setup above, a solution of known concentration (titrant) is used to determine the concentration of an unknown solution (titrand or analyte).

Typically, the titrant (the solution of known concentration) is added through a burette to a known volume of the analyte (the solution of unknown concentration) until the reaction is complete. Knowing the volume of titrant added allows us to determine the concentration of the unknown analyte. Often, an indicator is used to signal the end of the reaction, the endpoint. Titrant and analyte is a pair of acid and base. Acid-base titrations are monitored by the change of pH as titration progresses.

Let us be clear about some terminologies before we get into the discussion of titration curves.

7 0

3 years ago

CH4+ 2O2>CO2 + 2H2O

Karolina [17]

Answer:

The given reaction is combustion reaction heat is also produced.

Explanation:

Chemical equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

The given reaction is combustion of methane. When methane burn it produced water and carbon dioxide. Heat is also produced.

The given reaction followed the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

CH₄ + 2O₂ → CO₂ + 2H₂O

There are equal number of carbon hydrogen and oxygen atoms present on both side of equation. So it follow the law of conservation of mass.

4 0

4 years ago

The mineral copper (Cu) is composed entirely of copper atoms. To which mineral group does copper belong? ​

The mineral copper (Cu) is composed entirely of copper atoms. To which mineral group does copper belong?