Which subatomic particles each have a negative electrical charge?A) protons
B) neutrons
C) electrons

Answers

Answer 1

Answer:

Answer: Option (C) is the correct answer.

Explanation:

Each element contains three sub-atomic particles which are protons, neutrons and electrons.

Inside the nucleus of an atom, there will be only protons and neutrons. Whereas electrons revolve around the nucleus of an atom.

Protons have a positive charge, neutrons have no charge and electrons have a negative charge.

Thus, we can conclude that electrons are the subatomic particles and each of them have a negative electrical charge.

Answer 2

Answer: C) electrons have a -ve charge.

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Bill stands near a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. which process causes this difference in temperature?

Answers

I believe the answer is evaporative cooling

Which substance is an electrolyte?

(1) O2
(2) Xe
(3) C3H8
(4) KNO3

Answers

(1) O2 Is a Nonelectrolyte: because it does not ionize when dissolved in a solution

(2) Xe Is a Nonelectrolyte: because it does not ionize when dissolved in a solution

(3) C3H8 Is a Nonelectrolyte: because it does not ionize when dissolved in a solution

(4) KNO3 Is an electrolyte: because it ionizes when dissolved in a solution

Electrolytes:

Electrolytes are the substance whose aqueous solution conducts electricity. These are mainly two types:

1. Strong electrolytes

2. Weak electrolytes:

Strong electrolytes:

Strong electrolytes have following properties:

1. They are ionic compounds.

2. They are completely separates into their ions when dissolved in water.

3. In solution form they conduct electricity due to present of ions but in solid form means neutral molecule does not conduct electricity.

Weak electrolytes:

Weak electrolytes are partially ionizes in water.

In general strong electrolytes are strong acid and strong base while weak electrolytes are weak acid and weak bases.

Nonelectrolyte:

The substance which does not ionize when dissolved in a solution is called non-electrolyte. It is a poor conductor of electricity.

KNO3 is an electrolyte. The reason being it has low vapor pressure than water(at same temperature). All strong acids, strong bases and salts which are highly soluble make strong electrolytes. Hope it helps.

A stream of negatively charged particles is called:

Answers

Cathode rays are a stream of negatively charged particles or electrons in vacuum tubes. They were first seen by Johann Hittorf in 1869. They are named since they are emitted by electrode or cathode. In order to release the electrons, the electrons should first be detached from the atoms of the cathode.

Which event would be impossible to explain by using John Dalton’s model of the atom?

Answers

Answer:

It’s A

Explanation:

The material you should use in the windshield washer container is? usually a special windshield washing solution

Answers

The material you should use in the windshield washer container is a special windshield washing solution.

Using the wrong material in the windshield washer container can cause damage to the windshield and the washer system itself. A special windshield washing solution is specifically designed to clean the windshield effectively and safely, without leaving streaks or residue.

There are several types of special windshield washing solutions available in the market, each with its own set of benefits and features. Some of the most common types include:

1. Deionized water: This type of solution is distilled and purified to remove impurities and minerals that can leave streaks on the windshield. Deionized water is gentle on the windshield and the washer system, and it is effective in removing dirt and grime.

2. Isopropyl alcohol: This type of solution is a mixture of isopropyl alcohol and water. It is effective in removing dirt and grime, and it also helps to dry the windshield quickly. However, it can be too harsh on some types of windshields, so it is important to use it with caution.

3. Glycerin-based solution: This type of solution is made with glycerin, which is a natural humectant that helps to prevent the windshield from drying out. It is also effective in removing dirt and grime, and it leaves the windshield streak-free.

When choosing a special windshield washing solution, it is important to consider the type of windshield you have, as well as the climate and weather conditions in your area. For example, if you live in an area with high humidity, a glycerin-based solution may be the best choice, as it helps to prevent the windshield from fogging up.

It is also important to note that some special windshield washing solutions may not be compatible with certain types of windshields, such as those made of polycarbonate or acrylic. It is always a good idea to consult the manufacturer's instructions before using any solution in your windshield washer container.

In summary, the material you should use in the windshield washer container is a special windshield washing solution that is specifically designed for the type of windshield you have and the climate and weather conditions in your area. It is important to choose a solution that is gentle on the windshield and the washer system, and that is effective in removing dirt and grime.

A brick has a volume of 475 cubic centimeters and a mass of 912 grams. Calculate itsdensity.
Write your answer to the hundredths place