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3 years ago

Why do we perform an experiment?

Chemistry

2 answers:

Nesterboy [21]3 years ago

7 0

Answer:

Explanation:

One of its important roles is to test theories and to provide the basis for scientific knowledge that we need to know. How are we supposed to know the answer to our question if we don't perform the experiment to test our question.

7nadin3 [17]3 years ago

6 0

Answer:

Experiment plays many roles in science. One of its important roles is to test theories and to provide the basis for scientific knowledge. It can also call for a new theory, either by showing that an accepted theory is incorrect, or by exhibiting a new phenomenon that is in need of explanation.

Explanation:

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Propane gas (C3H8) burns completely in the presence of oxygen gas (O2) to yield carbon dioxide gas (CO2) and water vapor (H2O).

Sindrei [870]

Oxen beacon is great for your self halllway

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3 years ago

Nguyên tố A có cấu hình electron phân lớp cuối cùng là 4p3. A phải

Studentka2010 [4]

Answer: ?

Explanation: I translated this and It makes no sense.

Tôi đã dịch điều này và nó không có ý nghĩa.

4 0

2 years ago

Two or more substances in variable proportions, where the composition is variable throughout are a a homogeneous mixture. b a so

REY [17]

Answer: In heterogeneous mixture, the composition remains variable throughout.

Explanation:

For the given options:

Homogeneous mixtures are defined as the mixtures that appears uniformly throughout the solution and the particle size or shapes are not different. The composition remains constant throughout.

A solution is defined as the solution in which the components gets completely dissolved in it. Particles are evenly spread in these solutions. These solution does not scatter light falling on it. The composition remains constant throughout.

An amorphous solid is defined as the solid in which the constituent particles of the matter are arranged in the random manner. The composition remains constant throughout.

A heterogeneous mixture is defined as the mixture in which component are unevenly spread throughout the solution. The size and shape of the particles differ in these mixtures. These mixture scatter the light falling on it. The composition do not remains constant throughout.

Compound is defined as the chemical specie which is formed by the combination of two or more different type of atoms. For Example: $H_2O,O_2$ etc...The composition remains constant throughout.

Hence, in heterogeneous mixture, the composition remains variable throughout.

4 0

4 years ago

Identify the decay mode of hydrogen -3.

Phantasy [73]

Answer:

The radioactive decay mode that does not result in a different nuclide is gamma decay. In gamma decay, the only product is a gamma ray photon.

Explanation:

5 0

2 years ago

B Lau C) Why is sulphuric acid kept in the glass bottle? in fire extinguisher

ruslelena [56]

Answer:

A glass bottle kept inside the container has sulphuric acid in it. When the knob of the extinguisher is pressed, the bottle breaks. The acid comes in contact with sodium carbonate and carbon dioxide is produced. The carbon dioxide comes out through the nozzle which is directed towards the fire.

6 0

3 years ago