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3 years ago

Why does a neutral atom have no net charge?

Chemistry

2 answers:

alexira [117]3 years ago

6 0

Answer: It has equal number of protons and electrons.

Explanation: An atom is electrically neutral or has no charge because it has equal number of positive particle known as Proton and equal number of negative particle called Electron. This charges cancels each other out, making the charge on the atom to be neutral.

Bezzdna [24]3 years ago

5 0

Answer
Same amount of protons and neutrons
Explanation
Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion.

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A bus travels 20km in 30 min what is the average speed of the bus

STatiana [176]

Answer:

40km/h

Explanation:

v=20km/0.5h=40km/h.

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3 years ago

Read 2 more answers

Name the two criteria that is used to determine if a substance is pure or not

meriva

Answer:

Melting and Boiling Point Determination

The physical properties of a substance can be used to establish its purity. These properties include the melting point and boiling point. Different substances tend to have different melting and boiling points, and any pure substance will have a specific melting and boiling point.

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3 years ago

The ratio between the force of sliding friction and the normal force of an object is called _____.

Kitty [74]

Answer: The correct answer is C.

Explanation: Frictional force is the contact force which resists the motion of one surface on another.

Mathematically,

$f=\mu N$

where,

f = frictional force

$\mu$ = Coefficient of friction

N = normal force acting on a body

We need to find the ratio of force of sliding friction ( which is a type of frictional force) and the normal force acting on an object. This will be equal to coefficient of friction.

$\mu=\frac{f}{N}$

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3 years ago

The density of mercury is 13.6 g/mL What is the mass in kilograms of 5L of mercury?

Oliga [24]

Answer:

68kg

Explanation:

density= mass÷volume

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4 years ago

When did the level of oxygen in Earth's atmosphere become high enough to sustain aerobic respiration? When did the level of oxyg

Alexeev081 [22]

Answer:

2.4 billion years ago

Explanation:

The formation of the tertiary atmosphere, with the re-arrangements of the plates, took that influenced the long term evolution of the planet that transferred the carbon dioxide to the large continental stores and the surplus oxygen came into formation about 2.4 billion years ago during the massive oxygenation event that leads to the appearance at the end of the banded iron formations.

The process of photosynthesis also added and reduced the material that reduces the oxidation of the atmosphere and kept ion place till 15% of the Precambrian period had ended.

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3 years ago