CHEMISTRY MIDDLE SCHOOL

an, 13 Students set up two environments see which one best supports growth of hibiscus flowers. One environment is created as a desert, using The plant is exposed to high temperatures. The a tropical other environment is create exposing the forest, using soil and the plant to high temperatures. What is variable used in the investigation? 5.2(A) CA The temperature The environmen The type of flower The amount of sunlight in D
an, 13 Students set up two environments see which one - 1

Answers

Answer 1
Answer: B. The Enviroment. The Soil and Humidity are differant. They both have high tematures, they use the same flowers in both, Hibiscus. The tropical environent should help the Hiviscus grow better.

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What is likely the homeostatic reason for developing a fever

Answers

Answer: Fever ( also termed as pyrexia) is a state of body in which internal body temperature rises substantially beyond the normal range of body temperature. It is commonly caused by the infection of pathogenic agents ( such as virus and bacteria) in the body.

It is a common way to fight against and eliminate the infection as it enhances the amount of anticancer and antiviral interferon in the blood, which do not allow the infectious agents to replicate. Apart from this, they are also temperature sensitive and therefore replication becomes difficult.

Thus, presence of a fever usually corresponds to stimulation of immune response of body to fight against the infectious agents.
Your immune system discovers a foreign object and starts to fight back.  

Is the following chemical equation balanced? 2Na + 2H2O 2NaOH + H2 yes or no

Answers

yes the given chemical equation is balanced chemical equation

Answer:

yes

Explanation:

hope this helps

What would be an example of a chemical change that took a long time to occur?

Answers

The rusting of iron is an instance of a chemical change that takes a long time to occur.

What is rusting?

Rust is an iron oxide, which is a typically reddish-brown oxide formed by the catalytic reaction of iron and oxygen in the presence of water or air moisture.

Rust is made up of hydrous iron(III) oxides and iron(III) oxide-hydroxide and is commonly associated with refined ironcorrosion.

Rusting is defined as the chemical process by which a red or orange coat forms on the surface of metals. Corrosion includes rusting.

When iron or its alloys are exposed to moist air, rust forms. The hydrated oxide is formed when oxygen and water in the air react with the metal.

(Fe2O3) is the well-known red form of rust, but iron has other oxidation states and can form other colors of rust.

Thus, this is the example of a chemical change that took a long time to occur.

For more details regarding rusting, visit:

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rusting takes a long time, and rusting is a chemical change.

A substance X contains 10 gram of calcium carbonate calculate the number of oxide of calcium carbonate present in x​

Answers

Answer:

x contain 9 percent ofcalcium carbonaye
The answer could be x = 10 of calcium

What causes a top to stop spinning?

Answers

Tops stops spinning because it doesn't have energy or ran out of force for example when you spin a top you give force to it then after 30 sec it going to stop going slower and slower that Is losing energy that's how tops stops spinning

In Hooke’s law, what does k represent? A. the distance the spring stretches

B. the elastic constant, a number that tells the relative strength of the spring

C. the constant of gravity

D. the amount of force acting on the spring

Answers

Answer: The correct answer based on the test is

B- the elastic constant, a number that tells the relative strength of the spring

D. the amount of force acting on the spring
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