Chemistry Middle School

this is the last one thank you to anyone who helps ​

This Is The Last One Thank You To Anyone Who Helps

Answers

Answer 1

Chromium-58   Carbon-16    Nitrogen-15    Sulfer-25  Sodium-20 Selenium-80

protons:24               6                      7                16               11                  34

neutrons:34             10                     8                 7               1                    46

electrons:24             6                      7                 16             11                   34

Explanation:

Answer 2
I do not get what this is

Related Questions

I need this ASAP! Thank you!

Answers

Answer:

35

Explanation:

You look at it straight and at the lowest point the liquid fills to.

35 would be your answer each line is one and it starts at 30 and only goes up 5 so it would be 30

Which describes an atom that has fewer neutrons than protons and more electrons than protons?


1. Negative Compound

2. Positive Compound

3. Positive Ion

4. Negative Ion


Help!

Answers

Answer:

3. Negative Ion

a negative Ion has more electrons then protons and there are more electrons

hope this helped ^^

Negative ion

I did that question

Are the forces on an object in motion balanced? Why or why not?

Answers

Answer:

An object's motion can be changed by unbalanced forces. Balanced forces do not change the motion of an object. The motion of an object will not change if the forces pushing or pulling the object are balanced. An object that is sitting still will stay still if the forces acting on it are balanced.

There is no unbalanced force acting upon the book and thus the book maintains its state of motion. When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate. ... Since these two forces are of equal magnitude and in opposite directions, they balance each other.

Nick wanted to see how high an ice cube would float in different temperatures of water. Identify the dependent variable.
A. amount of water
B. height of ice cube
C. size of ice cube
D. temperature of water
E. temperature the ice cube was at its' highest height

Answers

Answer:

B. height of ice cube

Explanation:

The height of the ice cube depends on the  fifferent emperatures tof the water. You just need to remember that the dependent variable is dependent on the independent variable.

MATCH THEM TOGETHER 4. diffraction 5. interference 6. constructive interference 7. destructive interference 8. standing wave 9. resonance a. interaction of two waves that results in a wave with a larger amplitude b. a wave that appears to stay in one place c. increase in amplitude that occurs when external vibrations match an object’s own natural frequency d. interaction of two waves that results in a wave with a smaller amplitude e. the bending and spreading out of waves around the edge of a barrier f. interaction between two waves that meet

Answers

Answer:

Explanation:

a. is constructive interference

b. is standing wave

c. is resonance

d. is destructive interference

e. is diffraction

f. is interference

Hope this helped :)

1. What happens to the amount of energy as you move up the energy pyramid.

2. Describe how the other organisms would be affected if the secondary consumer in a food chain were removed.

5. Label the following as asexual or sexual reproduction
__________ Identical to parent __________ Most animals produce this way

Answers

Answer:

Look it up

Explanation:

If you don't know then look it up

1: energy is reduced by %10

i need help on this question ASAP

Answers

Answer: well because

they have a different mass but the triangles have all the same acceleration the house is going to have more force added to it.

Explanation:

Different mass, same acceleration

Explanation:

This atom is an __________ of the other atom.

Answers

Answer: carbon

Explanation:

because i took notes on atoms last week

Carbon just took the test

Identify two characteristics shared among transverse waves, longitudinal waves, and surface waves.

Answers

Answer: For transverse waves, the waves move in perpendicular direction to the source of vibration.

For longitudinal waves, the waves move in parallel direction to the source of vibration .

They are similar within the sense that energy is transferred within the kind of waves.

Explanation:

The shared characteristics between traverse, longitudinal and surface waves include :

Traverse, longitudinal and surface waves are all mechanical waves

They only transport energy without transporting matter.

Mechanical waves are simply waves which requires a material medium to propagate. They include longitudinal, surface and traverse waves.

Also, all three waves transfer energy through a medium without the transfer of materials or matter in the medium.

Therefore, all three waves are mechanical waves and do not transfer matter.

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2. Calculate the following net forces.
a. Two people push a couch across a room. One pushes with 30 N. The other pushes with 50 N.
b. An uncle plays tug-of-war with his niece and nephew. The uncle pulls one side of the rope with a force of 95 N. The niece and nephew pull the other side of the rope with a force of 40 N and 45 N.
c. Two friends push their friend on a swing with a combined force of 15 N and 20 N.
Text to speech

Answers

Answer:

A. The net force is 80 N.

B. The net force is 10 N going more towards the Uncle than the children.

C. The net force is 35 N.

Explanation:

Net force is the sum of the amount of force on either one side (addition) or two sides (subtraction).

Force is an external agent which is responsible for changing a body's state of rest or motion. It is the push or pull on an object. The net forces acting on the body are 80 N, 10 N and 35 N.

What is a net force?

The sum of all the forces acting on an object is defined as the net force. The net force is able to accelerate a mass. The net force is known as a term which is used in a system when there is a significant number of forces.

When we apply a force on a body, apart from the applied force, there are many other forces acting like gravitational force, frictional force and the normal force.

The net force acting on a body is given as:

Fnet = F₁ + F₂ + F₃ + .....Fₙ

a. Fnet = 50 + 30 = 80 N

b. Fnet = 95 - (40 + 45) = 10 N

c.  Fnet = 20 + 15 = 35 N

To know more about net force, visit;

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what is nitrogen metal nonmetal metalloid PLEASE HELP ME!!!!!!!!!!

Answers

Answer:

nonmetal

Explanation:

Nitrogen is considered a non metal in the periodic table

a horizontal row on the periodic table is called a______________________? Please help !!!!!!!!

Answers

Answer:

Period

Explanation:

horizontal is a period and verticle is a group

Answer: There called periods.

Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he is going to create an experiment to find out if there is something better. What is his dependent variable?
A. amount of tissue
B. Kleenex
C. mass of the snots the tissue can hold
D. type of tissue
E. Justin

Answers

Answer: c

Explanation:

Dependent Variable is what you measure, he's measuring the amount of snot that can be held

C. mass of the snot the tissue can hold

What is the mass number of an atom?

Answers

The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.

Answer:

it’s total number of protons and neutrons

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