What is the total number of neutrons in an atom of O-18?
(1) 18 (3) 10
(2) 16 (4) 8

Answers

Answer 1

Answer: the oxygen has 8 protons and 8 neutrons in your nucleus

A = z + n

n = 18 - 8

n = 10 neutrons

Answer (3)

hope this helps!

Answer 2

Answer:

Final answer:

The total number of neutrons in an atom of O-18 is 10. This is determined by subtracting the atomic number (number of protons) from the atomic mass (number of protons + neutrons).

Explanation:

To find the number of neutrons in an atom, you subtract the atomic number (number of protons) from the atomic mass (number of protons + neutrons). In an atom of O-18 (Oxygen-18), the atomic number of oxygen is 8, which means there are 8 protons. The 18 in O-18 represents the atomic mass. Subtracting the atomic number (8) from the atomic mass (18) gives us the number of neutrons, which is 10.

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Which of the following is necessary for collisions to be successful?A. enough kinetic energy and favorable geometry
B. enough kinetic energy only
C. sufficient potential energy only
D. favorable geometry only

Answers

Answer: A. enough kinetic energy and favorable geometry

Explanation: According to collision theory, the rate of a reaction depends upon the number of effective collisions which means the collisions which result in the formation of product which in turn depend on following two factors:-

a) Energy factor: In order for a collision to be successful, the colliding molecules must cross a energy barrier which is called as threshold energy. Thus molecules with energy less than threshold energy are not able to result into products.

b) Orientation factor: the colliding molecules must have proper orientations at the time of collision otherwise they do not result in product formation.

It's A Enough kinetic energy and favorable geometry

Magma from Earth's interior oozes from the cracks at mid-ocean ridges.
a. True
b. False

Answers

The answer is A. True

Magma from Earth's interior oozes from the cracks at mid-ocean ridges.

true is the right one

WILL MARK BRAINIESTIf the molecules of two different substances have a similar size but the molecules of one substance are polar while the molecules of the other substance are nonpolar, what is most likely true about the substances?
A The polar substance has a lower boiling point than the nonpolar substance.
BThe nonpolar substance has a lower boiling point than the polar substance.
C Both substances have similar volatilities.
DBoth substances have similar solubilities.

Answers

Answer:

The correct option is B. The nonpolar substance has a lower boiling point than the polar substance.

Explanation:

Substances with hydrogen bonding, an intermolecular force, will have much higher boiling points than those that have ordinary dipole-dipole intramolecular forces. Non-polar molecules have lower boiling points, because they are held together by the weak van der Waals forces.

Note

However, if size of non polar increases, then its boiling point increases due to increases in van der walls forces with large size.

The correct answer is letter B: the non polar substance has a lower boiling point than the polar substance.

in a collosion 15 kg object moving with a velocity of 3 m.s transfers all of its momentum to a 5 kg object. what would be the velocity of the 5 kg object after the collosion

Answers

P=mv
1st object- 45kg*m/s
45=5v
V=9m/s
The velocity if the second object is 9 meters per second

Continued deforestation will most likely lead to _______.a.
a decrease in the number of endangered species
b.
an increase in the number of endangered species
c.
an increase in the number of oil and chemical spills
d.
a decrease in glacial melting

Answers

In the question "Continued deforestation will most likely lead to _______." the correct answer is "an increase in the number of endangered species" (option b).
Deforestation is the clearing of forest areas for use for non forest activities. Because there are a lot of animals that use forests as their home, clearing of the forest will make them homeless and will subject them to conditions that may lead to their death and possible extinction.

Answer:

Explanation:

If the nucleus was the size of a tennis ball the atom would be the size of....?

Answers

If the nucleus was the size of a tennis ball, the atom would be the size of a sphere about 1,450 feet in diameter.

The size of one atom would be comparable to one of the world's largest sports stadiums if the nucleus were the size of a tennis ball, or around 1,450 feet in circumference.

There are protons, neutrons, and electrons, three types of subatomic particles. Protons and electrons, two of the subatomic particles, each carry an electrical charge of one or the other.

Electrically charged protons and electrically neutral neutrons make up atomic nuclei. The strongest basic force known to science, often known as the strong force, holds these things together.

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If you could find anything just bigger than a tennis ball, you're all good, because the nucleus is almost half the size of the atom, I think! U should find this helpful, if you do, great, I'm glad that I ciyld help

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