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3 years ago

What is the final step in the scientific method

2 answers:

8 0

The final step in the scientific method is the conclusion. The conclusion will either clearly support the hypothesis or it will not. If the results support the hypothesis a conclusion can be written

ehidna [41]3 years ago

5 0

It’s the conclusion which is the result

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Select all of the answers that apply. Which of the following are ways the atmosphere supports life? contains trace gases blocks

zysi [14]

Blocks harmful UV Rays, Transports and distrubites heat, and Cycles essential elements: C, O , and N

3 0

4 years ago

Read 2 more answers

Which statement explains how this type of fossil differs from a trace fossil?

KatRina [158]

The answer is:

This fossil was an organism that has been turned into rock.

glad to help!

7 0

4 years ago

Read 2 more answers

Consider the reaction of NO and CO to form N2 and CO2, according to the balanced equation: 2 NO (g) + 2 CO (g) → N2 (g) + 2 CO2

Gekata [30.6K]

The image is not given in the question, it is attached below:

Answer: The excess reactant is NO, the limiting reactant is CO and the products are shown in the image attached below.

Explanation:

In the given image:

Red spheres represent oxygen atoms, blue spheres represent nitrogen atoms and black spheres represent carbon atoms

The combination of 1 black and 2 red spheres will represent carbon dioxide $(CO_2)$ compound

The combination of 2 blue spheres will represent nitrogen molecule $(N_2)$

The combination of 1 blue and 1 red sphere will represent nitrogen monoxide $(NO)$ compound

The combination of 1 black and 1 red sphere will represent nitrogen monoxide $(NO)$ compound

Limiting reagent is defined as the reagent which is completely consumed in the reaction and limits the formation of the product.

Excess reagent is defined as the reagent which is left behind after the completion of the reaction.

We are given:

Given moles of NO = 6 moles

Given moles of CO = 4 moles

For the given chemical equation:

$2NO(g)+2CO(g)\rightarrow N_2(g)+2CO_2(g)$

By stoichiometry of the reaction:

If 2 moles of CO reacts with 2 moles of NO

So, 4 moles of CO will react with = $\frac{2}{2}\times 4=4mol$ of NO

As the given amount of NO is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.

Thus, CO is considered a limiting reagent because it limits the formation of the product.

Hence, the excess reactant is NO, the limiting reactant is CO and the products are shown in the image attached below.

3 0

3 years ago

Explain The Law of Conservation of Mass

gayaneshka [121]

Answer:

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.

Hope it's helpful to you

7 0

3 years ago

Compare the physical properties of two forms of carbon: diamond and graphite

Mariana [72]

Diamond and graphite are allotropes of carbon and have various differences in their physical properties.

Explanation:

Diamond:

It is crystalline in nature
Each Each C is $sp^{3}$ hybridized and forms 4 covalent binds with neighboring C atoms
The geometry is tetrahedral
C-C bond length is 154 pm
It has rigid covalent boning which is difficult to break.
It acts as an electric insulator

Graphite:

It has layered structure
Each C atom is sp2 hybridized and forms 3 sigma bonds with 3 other C atoms. Fourth electron forms pi bond.
The geometry is planar
C-C bond length is 141.5 pm
It is soft. Its layers can be separated easily
It is good conductor of electricity.

This is the comparison of the physical properties of two forms of carbon: diamond and graphite

5 0

3 years ago