Chemistry High School

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Answers

Answer 1
The answers are;
2H2+O2===>2H2O
N2+3H2==>2NH3
C3H8+5O2==>4H20+3CO2
CH4+2O2===>CO2+2H2O
2HBr +Fe==>FeBr2 +H2
I hope it helped

Related Questions

5. CFA 1.1 Explain how a rock and motor oil compare in their ability to be compressed.​

Answers

Answer:h

Explanation:

G

CH4 + 2O2 → CO2 + 2H2O How many products are produced by this reaction?
A.4
B.2
C.3
D.1

Answers

Answer:

i think its 2 but I'm not sure

Calculate the Keq of the reaction CH4 + O2 ⇌ CO2 + 2H2O, given the following concentrations at equilibrium:
[CH4] = 0.37M [O2] = 0.25M [CO2] = 0.86M [H2O] = 0.44M

Answers

Answer is B but don’t take my word

Which of the following have London dispersion forces?
a. methane
b. carbon tetrachloride
c. bromine trifluoride
d. all of the above

Answers

It’s think it’s A I’m sorry if I’m wrong

Photo attached, can anyone help??? I need help with question 28

Answers

Answer:

so what it's saying is that chlorine has two atoms because diatomic means consisting of two atoms.

Explanation:

can I please have brainliest? :)

SCIENCE ASSAP
Genetic Diversity
• The variation in genes that exists within a species
• Organisms with a large gene pool have a greater
chance of surviving and flourishing than a
population with limited genetic variability.
• Ex: resistance to disease, tolerance to cold
• Darwin termed this process "natural selection."
To the left you can see the variety of genes that exist
in types of fruit. Can you think of another species
that has similar variations?
Kesler Science, LLC

Answers

Answer:

Oranges

Explanation:

     Oranges have a lot of genetic diversity within them, since oranges were already well versed in growing in winter months, oranges have gentically modified themselves through natural selection into be able to prouduce in warmer climates. Oranges also have changes in genetics which gives them a lot of gentic diversity that effects their, size, taste, texture, acidity and ability to reproduce.

how does a balanced chemical equation satisfy the law of conservation of mass

Answers

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. ... When an equal number of atoms of an element is present on both sides of a chemical equation, the equation is balanced.

How many molecules are in 502.1 g of NaF?

Answers

Answer:

11.958129200057586 molecules

Explanation:

Which component of the universe contains all of the other components listed below and would have the
greatest mass?

Answers

Answer:
The answer is galaxy

The galaxy is the component of the universe which  contains all of the other components and would have the greatest mass.

What is a galaxy?

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.

Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.

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Are viruses alive. What makes something alive?



Statement: No cell membrane or other organelles.

Statement: Most viruses do not have the fools to copy their own DNA

Statement: Outside of a host cell viruses do not use energy.

Statement: viruses don't appear to have active processes that respond to the environment

what​

Answers

The correct answer is the last question

The image shows the ________ formula of methyl formate
a- structural
b-skeletal
c- molecular
d- empirical

Answers

Answer:

Structural formula

Explanation:

This is because structural formula is use to show or indicate chemical bonds that are present between atoms of molecules. structural formula comprises of symbols that represent the atoms which are connected by short lines which indicate the presence chemical bonds which could be single line, double lines or even triple lines.

is Radon an elementary substance or a compound?

Answers

Answer:elementary substance

Explanation:

Help please!!!!!!!!!!!!!!!!!!!!!!!!

Answers

The answer is n2+3h2=2nh3

A solution's hydrogen ion concentration is 1 x 10-5M.
What is the pH?

Answers

Answer:

pH=5

Explanation:

-log(1 x 10-5)=5

What factors are different in diagrams A and B?​

Answers

Answer:

Acceleration Of B IS greater

Explanation:

F= mass x accelerarion

Acceleration of ( A) =20÷5 =4

Acceleration of (B) =5

PLZ HELP
will give brainliest to best answer if I can

You are testing a solution for pH and find it to be 8.31 on the pH scale. Is this solution acidic, basic or neutral. Explain.

Answers

it's neutral

Explanation:

on the ph scale 7-8 is in the middle and everything after 8 is acidic and everything under 7 is basic. (you can look up a picture of a ph scale you will see what I mean)

This solution is neutral .

One useful method for calculating how acidic something is on a quantitative level is to utilize the pH scale. A solution is considered acidic if its pH value is less than 7. The solution is neutral if the pH is 7, and basic if the pH is higher than 7.

What distinguishes neutral, acidic, and basic solutions?Neutral solutions are those with a pH of 7. The solution is acidic if the pH value is less than 7. The solution is basic when the pH value exceeds 7. These values increase on a negative logarithmic scale and represent the concentration of hydrogen ions in the solution.How does pH scale work?pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.

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If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket" being changed by human activities?

Answers

The gases we create are adding to that blanket making sun light harder to escape,so the world heats up due to this addition to the layer

Answer:

c on edg

Explanation:

i dont know for sure so sorry if i am wrong.

and have a good day <3

Which of the following elements would have the highest electronegativity
value? *
0
N
S
P

Answers

Answer:

Oxygen will have the highest electronegativity

3. Explain why ionic compounds are "fixed" in their chemical composition.

Answers

Answer: Ionic compounds are "fixed" in their chemical composition as forces present between atoms of these compound are strong electrostatic forces of attraction due to which these compounds have fixed chemical composition.

Explanation:

Compounds formed by transfer of electrons from one atom to another are called ionic compounds.

For example, sodium atom on losing its one valence electron forms [tex]Na^{+}[/tex] ion and when a chlorine atom gains this electrons then it forms [tex]Cl^{-}[/tex] ion. These ions when come closer then an electrostatic force of attraction will pull them together forming NaCl compound.

Therefore, one atom of sodium is chemically combining to one atom of chlorine to form NaCl.

As the forces present between atoms of an ionic compound are strong electrostatic forces of attraction due to which these compounds have fixed chemical composition.

Thus, we can conclude that ionic compounds are "fixed" in their chemical composition as forces present between atoms of these compound are strong electrostatic forces of attraction due to which these compounds have fixed chemical composition.

Ionic compounds are formed when there is a donation of an electron from one element to another that receives the electron. This causes the donating atom to attain a positive charge and the receiving atom to attain a negative charge. The ions thus formed are held by strong electrostatic forces that hold them together.

Ionic bonds are formed through the transfer of electrons from one element to another which receives the electron.

Positive and negative ionic charges are thus acquired by the respective elements. Strong electrostatic forces that act in all directions hold the ions together.

This also gives them the fixed state that makes it more difficult to break them up when compared to the covalent bonds.

So, the strong electrostatic forces cause the fixed state of ionic compounds.

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When an object is acted on by unbalanced forces, the object will -

Answers

Answer:

hope it helps and thank you for the points

How many moles are 7.6 x 1024 atoms of Helium?

Answers

Answer:

3.88

Explanation:

If the He H e injected into the abdomen produces a pressure of 22 mmHg m m H g and a volume of 2.7 L L at 31 ∘C ∘ C , how many grams of He H e were used?

Answers

Answer:

1280.27 g

Explanation:

Pressure = 22 mmHg / 760 = 0.0289 atm (Converting to atm by dividing by 760)

Volume = 2.7 L

Temperature = 31 ∘C + 273 = 304 K

Mass = ?

Using the ideal gas equation;

PV = nRT

n = RT / PV = 0.0821 * 304 / ( 0.0289 * 2.7)

n = 319.86 mol

Mass = Number of moles * Molar mass

Mass = 319.86  * 4.002602

Mass = 1280.27 g

Question 1
10 pts
In the reaction C3Hg + 502 — 3CO2 + 4H20, what is the ratio of moles of oxygen used to moles of H2O
produced?
O 5:3
04:5
0 3:5
O 5:4

Answers

Answer:

5:4

Explanation:

The equation given is balanced. There are 5 O2's on the left (reactant side) and then 4 H2O's on the right (product side). Thus, it's a 5:4 ratio.

how many periods are there in the modern periodic table of elements?​

Answers

Answer:

There are seven periods in the modern periodic table.

Answer:

Seven periods

Explanation:

There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.

The wave pictured represents a sound wave. Which label along the wave represents a sound with the LOWEST energy?
A)
A
B)
B
o
C
D)
D

Answers

Answer:

21

Explanation:

sffbhvvfcycuxcydghcdeGf you've ydhgc yfyff ygg TX church Uruguay t vitrified

The wave which is having higher frequency is associated with higher energy. In the given wave, the part B is labelling the lowest energy sound.

What are sound waves ?

Sound waves are longitudinal mechanical waves passing through a medium. In a longitudinal wave the oscillation of particles is in a direction along the wave propagation.

A sound wave is composed of rarefactions and compressions. The area where, the particles have some separation with lower  pressure is called rarefactions.

The area of high pressure where, the oscillating particles are closely packed is called compression of the wave. As the frequency of the wave increases, its energy increases, Therefore, the less frequency part B represent lowest energy sound.

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What causes a substance to be hydrophobic?

Answers

The hydrophobic effect is caused by nonpolar molecules clumping together. Large macromolecules can have hydrophobic sections, which will fold the molecule so they can be close to each other, away from water. Many amino acids in proteins are hydrophobic, helping the proteins obtain their complicated shapes. The hydrophobic effect extends to organisms, as many hydrophobic molecules on the surface of an organisms help them regulate the amount of water and nutrients in their systems.

What percentage of the world's species of plants and animals can be found in the rainforest?

Answers

Answer:

50

Explanation:

Because tropical rain forests are some of the oldest ecosystems on earth, they are home to a diverse population of plants and animals. In fact, around 50% of the world's plants and animals can be found here—with new species still being discovered.

List two of the kingdoms found in the Eukarya domain

Answers

Animalia and Plantae

Hope that helps

A gas mixture contains oxygen, nitrogen, and carbon dioxide. It has a pressure of 250 mmHg. If the pressure of oxygen is 50 mmHg and the pressure of nitrogen is 175 mmHg then what is the pressure for carbon dioxide?

Answers

Answer:

[tex]P_{CO_2}=25mmHg[/tex]

Explanation:

Hello there!

In this case, according to the Dalton's law, which explains that the total pressure of a gaseous system equals the sum of the partial pressures of the gases composing, for the gaseous mixture composed by oxygen, nitrogen and carbon dioxide it would be possible to write:

[tex]P_{tot}=P_{N_2}+P_{O_2}+P_{CO_2}[/tex]

Now, given the pressure of the system and those of oxygen and nitrogen, we calculate that of carbon dioxide as shown below:

[tex]P_{CO_2}=P_{tot}-P_{N_2}-P_{O_2}\\\\P_{CO_2}=250mmHg-50mmHg-175mmHg\\\\P_{CO_2}=25mmHg[/tex]

Best regards!

The ______ of the particles themselves is much less than the space in between those particles

Answers

plz write question properly. Its not understandable.

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