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lbvjy [14]
2 years ago
11

Do electrons have psrticle nature or wave nature?​

Chemistry
1 answer:
densk [106]2 years ago
4 0

Explanation:

they have wave nature

its correct answer

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The unit used to measure barometric or air pressure
Bumek [7]

Answer:

A barometer is an instrument used to measure air pressure and track weather systems. The most common unit of measurement used in barometers is the millibar (mb).

Explanation:

7 0
3 years ago
What sample is a pure substance?A. a test tube of zinc oxide.
Mice21 [21]
The correct answer is A. A test tube of zinc oxide. Zinc oxide is a compound which is a pure substance composed of two or more elements. They can only be separated or broken down into its individual elements or smaller compounds by chemical means. Therefore, the answer is a test tube of zinc oxide.
7 0
3 years ago
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1) List and describe the four levels of organization from the simplest to the most complex and give an example of each.
Bingel [31]

Levels of organisation include,

1. Cells. Its function is in the living organisms and has unit structure which is the smallest. It has certain functions in the organisms. Example include, bone cells, nerve cells, and blood cells.

2. Organs. They are formed with certain tissues which works together and performs specific activity, Example include, skin, heart, and brain.

3. Organ systems. It has one or more organs and they work together in order to perform certain functions in the organisms. Example include, nervous system, skeletal system, and circulatory system.

4. Organisms. They can either take in materials and from food there is energy which is released, reproduced, grow to respond to environment and release waste.

Example include, animal, human, bacteria, amoeba, and mushroom.

8 0
3 years ago
What is the concentration of O2(g), in parts per million, in a solution that contains 0.008 gram of O2(g) dissolved in 1000. gra
romanna [79]

Answer : The concentration of O_2 (g) in parts per million is, 8 ppm

Explanation : Given,

Mass of oxygen gas (solute) = 0.008 g

Mass of water (solvent) = 1000 g

First we have to calculate the mass of solution.

Mass of solution = Mass of solute + Mass of solvent = 0.008 + 1000 = 1000.008 g

Now we have to calculate the concentration of  O_2 (g) in parts per million.

ppm : It is defined as the mass of solute present in one million (10^6) parts by mass of the solution.

ppm=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 10^6

Now put all the given values in this expression, we get

ppm=\frac{0.008g}{1000.008g}\times 10^6=7.99=8ppm

Therefore, the concentration of O_2 (g) in parts per million is, 8 ppm

8 0
2 years ago
Consider the following precipitation reaction:
lubasha [3.4K]
6.47 x 10-3 mol / V = 0.183 M = 0.183 ml
5 0
3 years ago
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