CHEMISTRY HIGH SCHOOL

What is the density of a substance with a mass of 1.8 kg and a volume of 0.2 L? Hurry Quick for 10 points
giveaway

Answers

Answer 1

Answer:

Answer:

The answer is 9.0 kg/L

Explanation:

The density of a substance can be found by using the formula

$density = (mass)/(volume) \n$

From the question

mass = 1.8 kg

volume = 0.2 L

We have

$density = (1.8)/(0.2) \n$

We have the final answer as

9.0 kg/L

Hope this helps you

Answer 2

Answer:

Answer:

knkjhhg

Explanation:

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Select all that apply. Marie and Pierre Curie's discoveries included: X-rays uranium radium pitchblende polonium

Answers

Marie and Pierre Curie's discoveries included: Polonium and Radium. Marie Curie's death involved her long-term exposure to radiation. I hope this answer helps you on your assignment.

Answer;

Radium
Polonium

Explanation;

Pierre and Marie are known for their work in the study of radioactivity that led to the discoveries of new radioactive elements radium and polonium.

Radium element was named after the Latin word ray and Polonium was named after Marie's home country, Poland.
Element radium was discovered in the form of radium chloride, that was extracted from uraninite.

2. If an eagle is flying at a constant speed, it is accelerating. True or
False

Answers

Answer:

False

Explanation:

Answer:

Explanation:

What are the three factors that speed up solvation also called mixing and dissolving?

Answers

1. Temperature
2. Agitation ( Stirring )
3. Increasing the Surface area

however, 1 and 2 act opposite in gases while 3 doesn't affect gases.

The only thing that affect gases is
4. pressure

Given the balanced equation:2KClO3==> 2KCl + 3O2
Which type of reaction is represented by this equation?
(1) synthesis
(2) decomposition
(3) single replacement
(4) double replacement

Answers

Answer: Option (2) is the correct answer.

Explanation:

An equation in which the the number of reactants equal the number of products is known as a balanced equation.

Whereas a reaction in which a compound dissociates into two or more compounds is known as a decomposition reaction.

Therefore, the given reaction $2KClO_3 \rightarrow 2KCl + 3O_2$ represents that $KClO_(3)$ decomposes into KCl and $O_(2)$ .

Hence, it is a decomposition reaction.

Decomposition reaction is the type of reaction that is represented by the given equation. Therefore, the correct option is option 2.

A chemical reaction called a decomposition reaction, often referred to as an analysis or dissociation, occurs when a compound disintegrates into more basic elements. A single compound is transformed into two or more products in this reaction, which may be elements or other compounds.

Decomposition reactions are typically induced by heat, light, electricity, or the presence of a catalyst. These reactions occur because the reactant compound is unstable under certain conditions, leading to its breakdown into more stable products. Therefore, $\rm 2KClO_3 \rightarrow 2KCl + 3O_2$ is a decomposition reaction.

Therefore, the correct option is option 2.

To know more about Decomposition reaction, here:

brainly.com/question/14024847

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need help in getting a element superhero and the element i choose is Helium can you give me some ideas of a superhero to make using helium as the element?

Answers

you could design the hero with the powers of helium which then u can describe why u made the character with thoose powers

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