Models of four atoms are shown as figures A, B, C, and D. Which two atoms represent isotopes of the same element?
Models of four atoms are shown as figures A, B, - 1

Answers

Answer 1
Answer:
The identity of the element is determined by the number of protons
in the nucleus of each atom. 

If two atoms have the same number of protons in their nucleii
(nucleuses) but different numbers of neutrons, then they're both
atoms of the same element, but their atomic masses are different,
and they're called isotopes of the element.

In the picture, atoms 'A' and 'B' each have 3 protons in the nucleus,
so they're both atoms of Lithium.  But the number of neutrons is
different, so 'A' and 'B' are different isotopes of Lithium.

Also in the picture, atoms 'C' and 'D' each have 4 protons in the
nucleus, so they're both atoms of Beryllium.  But the number of
neutrons is different, so 'C' and 'D' are different isotopes of Beryllium.   

Answer 2
Answer:

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Related Questions

If an oxygen has 8 protons in its nucleus what is its atomic number A.6 B.8 C.4 D.12
__________ means to move from one region to another. When animals regularly move as a group from one region to another and back, it's a ______________.
What are some similarities between heat and temperature?
suface winds on earth are primarily caused by differences in...?
A student that jumps a vertical height of 50 cm during the hang time activity.a. What is the hang time of the student?b. What speed must the student leave the ground with to reach that height?

What is the difference between distance and displacement? Give an example of a situation where distance and displacement both have the same magnitude. Give another example, where distance and displacement have different values. Make sure to address the terms "vector" and "scalar" in your response.

Answers

Explanation :

Distance is total path travelled by an object during its entire journey. It is a scalar quantity i.e only magnitude.

Displacement is the shortest distance covered by an object. It is basically the change in position of object. It is a vector quantity i.e direction as well as magnitude.

When an object is travelling in a straight line and stops at the end point, then both distance and displacement are same.

When an object is travelling in a straight line and then changes its direction or we can say come backwards then the magnitude of distance and displacement are different.

A weatherman reports, "The storm waves are about 2 meters high and about 35 meters apart." What properties of waves is the reporter describing?

Answers

Answer:

Amplitud = 2 m

wavelength = 35 m

Explanation:

The waves are described by an equation of the form

       Y = A sin (kx -wt)

With k = 2 π/λ

With A is the amplitude of the wave, λ the wavelength and w the velocity

If we analyze the reporter's data, the maximum height of the value from zero to the highest, which corresponds to the amplitude of the wave

The other value 35 m between each wave corresponds to the distance between the ridges that is equivalent to the wavelength

2 meters high = Amplitude (height at the maximum)
35 meters apart makes gives frequency (how many per meter,  or how many per 100 meters etc...)

Balance KOH+AlCl3 --> Al(OH)3 +KCL

Answers

3KOH+AlCl3--> Al(OH)3+3KCl

Help?? When vibrational motion in an object increases, which is a true statement? A.
Kinetic energy and temperature decrease; thermal energy increases.

B.
Kinetic energy, temperature, and thermal energy decrease.

C.
Kinetic energy and temperature increase; thermal energy decreases.

D.
Kinetic energy, temperature, and thermal energy increase.

i think its D, but im not sure.

Answers

The answer should be "D", Because the vibration would heat up the object causeing the temperature and thermal energy to increase. Since the object is moving (Vibration), then it is using kinetic energy, so that also increases.

You are in a desert on a hot day and see water in the distance. It is not really there, you see it because light bends due to a difference in the temperature of air. Which behavior of light best explains this? Select one: a. reflection b. translocation c. diffraction d. refraction

Answers

Answer:

d) refraction

Explanation:

in physics, refraction is the change of direction of a wave passing from one medium to another. refraction of light is the most commonly observed phenomenon but other waves such as sound waves and water waves also experience refraction

Answer:

B. Translocation

Explanation:

It means a change in location. It often refers to genetics, when part of a chromosome is transferred to another chromosome, you want a change in location because you are so thirsty in the desert and need water

The amount of work done on an object is found by multiplying what and what

Answers


           (the distance the object moves)
times
           (the force in the direction of motion that made it move) .