CHEMISTRY MIDDLE SCHOOL

If an element has more than one ionic charge, how is that piece of information represented in a chemical name?

Answers

Answer 1
Answer: usually with roman numerals, like iron (II) chromate
iron has a charge of 2
or manganese (IV) oxide, manganese has a charge of 4
(these are ionic compounds just to let you know)

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The accepted value for the percent by mass of water in a hydrate is 36.0%. In a laboratory activity, a student determined the percent by mass of water in the hydrate to be 37.8%. What is the percent error for the student's measured value?(1) 5.0% (3) 1.8% (2) 4.8% (4) 0.05%
which type of relationship exists when a certain type of trees roots need a fungus present in order to grow normally
Owners of cattle herds who only choose to breed cows that produce the most milk are engaging in_________ selection

Jermey has two plants. he waters both equally. he puts one plant outside. he puts another plant in a closet which one is true about the plants?
A. the plant in closet will die.
B. plants only need soil to grow.
c. plants only need water to grow.
d.it does not matter where he puts the plant.

Answers

The plant in the closet will die without the proper nutrients granted through sunlight

What are some examples of upthrust force?

Answers

Like you could say above a boat on a sea could be an upthrust force.
 a examples of upthurst force is a boat on water

Moving water can be used to produce electricity becausea. most forms of energy can be converted into other forms
b. energy cannot be converted into other forms of energy
c. potential energy can be converted into kinetic energy, but not vice virsa
d. kinetic energy can be converted into potential energy, but not vise virsa

Answers

Moving water can be used to produce electricity because most forms of energy can be converted into other forms.  The kinetic energy of water is used to generate electrical energy.

What is energy transformation ?

According to the law of conservation of energy, energy can neither be created nor be destroyed. However, one form of energy can  be transformed to the other form.

The generation of electrical energy is a good example of energy transformation. Electrical energy is generated from the thermal energy, hydroelectric energy or nuclear energy.

Moving water have enough kinetic energy to provide mechanical energy for a generator that convert this energy into electrical energy. Therefore, option a correctly describe the possibility of energy transformation.

Find more on energy transformation :

brainly.com/question/29102331

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A) is the correct answer.

Which statement accurately describes non renewable energy sources ?A group of resources made of inorganic matter?

A type of resource located only on the United States

A resource that cannot be replenished in a short period of time

A group of resources found both above and below the earths surface

PLEASE ANSWER !!!

Answers

Answer:The correct answer is option:

'A resource that cannot be replenished in a short period of time'.

Explanation:

Renewable resources: Resources which are capable of restoring themselves overtime through natural process.They never get exhausted completely.For example: bio mass energy, solar energy etc.

Non-Renewable resources: Resources that cannot be replenished overtime through natural process.These are the resources which are used in wise manner so that to prevent their exhaustion. For example: coal, petroleum etc.

Hence, from the given the options the correct answer is :

'A resource that cannot be replenished in a short period of time'.

a resource that cannot be replenished in a short period of time

Describe a test to determine whether an object is charged or uncharged.

Answers

What do you mean ???????

There are many sources of air pollution in the united states and around the world. Some are natural sources, and other come from human activities. Which of these examples is a natural source of air pollution?A.) car exhaust fumes
B.) methane gas from cow manure
C.) dust from fertilizers used on crops
D.) smoke from the burning of fossil fuels

Answers

B should be your best guess
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