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-BARSIC- [3]
3 years ago
8

What is the mass of an atom that has 9 protons, 11 neutrons, and 10 electrons

Chemistry
2 answers:
Anastaziya [24]3 years ago
6 0

Answer: By looking at the periodic table, you will see that Fluorine has 9 protons. Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine.

Explanation:

zloy xaker [14]3 years ago
6 0

Answer:

19 u

Explanation:

by looking at the periodic table you see fluorine has 9 protons and 9 electrons. mass is 19u

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Please help<br> Explain why a molecule that has polar bonds can be a polar molecule.
Zepler [3.9K]

Answer:

Explanation:

Well, obviously a molecule with polar bonds can be polar in itself. It's like saying I am an atheltic person who can just reach the basketball rim with my head and also I can dunk.

But if the question is how can a molecule that in non-polar have polar bonds, well, its because the polar bonds' dipole cancels each other out. It's like a tight rope. If a person pulls in one direction, it intuitively, the rope would go in that direction. However, if a person pulls in the other direction with the same amount of force, the rope stays still. This is the same case. Although molecules can have different electronegativities, the pull of electrons in one direction is cancelled out by a pull in the opposite direction, making the net dipole 0.

This is common for main VSERP shaped molecules like linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.

8 0
3 years ago
Can you tell me the answer​
Nesterboy [21]

Answer:

noo sorry

Explanation:

8 0
3 years ago
Read 2 more answers
N an experiment you are asked to react hydrochloric acid with sodium hydroxide. When measuring the volume of the reactants, whic
luda_lava [24]

Answer:The correct option is, 100 ml Graduated cylinder.

Explanation:Graduated cylinder : It is measuring cylinder that is used to measure the volume of a liquid. It has a narrow cylindrical shape. The marked line drawn on the graduated cylinder shows the amount of liquid that has been measured.

Erlenmeyer flask : It is also called as a conical flask or titration flask. It is a laboratory flask that has flat bottom, a conical body and a cylindrical neck. It is commonly used for the titration.

Beaker : It is a type of laboratory equipment that has cylindrical shape and it is used for the mixing, stirring, and heating of chemicals.

As per question, the graduated cylinders are more accurate and precise than Erlenmeyer flasks and beakers.

8 0
3 years ago
Read 2 more answers
a mixture of emanations from radioactive atoms is passed through electrically charged plates imagination number one is attracted
slava [35]
Hello there!

The nuclear emanations 1, 2 and 3 are called, respectively:

1) Alpha, beta and gamma

Alpha Radiation consists of two protons and two neutrons, as protons are positive particles, they will be attracted to the negatively charged plate.

Beta Radiation 
is composed of a high-energy electron. As electrons are negative particles, they will be attracted to the positively charged plate.  

Gamma Radiation is composed or photons. Photons don't have charge or mass, and they will not be attracted to the charged plates. This kind of radiation is more penetrating than the other two.

Have a nice day!
3 0
3 years ago
18. An electric motor turns a belt that powers a pump. If this system is compared to the chemical reactions of the cell, which p
pogonyaev

Answer:

A. the electric motor

Explanation:

A cell is a biological molecule which is the basic and functional unit of life. Cells undergo series of processes to function appropriately. ATP is an acronym for adenosine triphosphate, which is the source of energy for various cell processes.

In the given mechanical system, the electric motor provides the energy required energy to drive the system. Therefore, the electric motor has the same major function of providing energy for the system as the ATP in a cell.

8 0
4 years ago
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