Chemistry High School



A sample of oxygen gas has a volume of 130.0 ml when its pressure is 0.952 atm. What will the volume of the gas be
at a pressure of 0.974 atm if the temperature remains constant?

Answers

Answer 1

Answer:

the volume of the gas when pressure 0.974atm is equal to 127.06ml

A Sample Of Oxygen Gas Has A Volume Of 130.0 Ml When Its Pressure Is 0.952 Atm. What Will The Volume

Related Questions


What is the structure of epithelial cells?


Answers

Your answer is C for sure

Write a balanced symbol equation for the incomplete combustion of hexane (C6H14) to produce soot.

Answers

Answer:

I77

Explanation:

2
Is the molecule with the formula Br
an element mixture or compound?
How do you know this?

Answers

Answer:

i do not know

Explanation:

What part of the isotope notation help you determine the number of electrons within an isotope?

Answers

It’s b got it on test

IM IN A TEST NEED HELP ASAP
When 2.00 mol of the acid react with sodium carbonate, 1.00 mol of carbon dioxide is formed.Calculate the volume of carbon dioxide formed, in cm 3 , from 8.00 g of the acid at room temperature and pressure.

Answers

good luck on ur test i wish i could help u more but im only in 7th grade :/ and i dont know that yet, so sorry again! :(

Explanation:

At what temperature would 2.10 moles of Nitrogen gas have a pressure of 1.25 atm and in a 25.0 L tank? (Hint: R = 0.082 L atm K−1 mol−1)

Don't spam!!!​

Answers

Given :-

Moles = 2.10

Gas = Nitrogen

Pressure = 1.25 atm

Volume = 25L

To Find :-

Temperature

Solution :-

As we know that

PV = nRT

Here,

P = PressureV = Volumen = MolesT = Temperature

According to the question,

1.25 × 25 = 2.1 × 0.082 × T31.25 = 2.1 × 0.082 × T31.25 = 1.722T31.25/0.1722 = T181 ≈ T

Temperature is 181 K

[tex]\large\fbox{181 K}[/tex]

the metallic compound reduced to the metal by electrolysis is _____

please girls answer, because I think u r always right. ​

Answers

Answer:

Magnesium oxide

Explanation:

When magnesium reacts with oxygen, the magnesium atoms donate electrons to O2 molecules and thereby reduce the oxygen. Magnesium therefore acts as a reducing agent in this reaction. The O2 molecules, on the other hand, gain electrons from magnesium atoms and thereby oxidize the magnesium.

How do you determine the charges on the ions in an ionic compound?

Answers

Answer:

To find the ionic charge of an element you'll need to consult your Periodic Table. On the Periodic Table metals (found on the left of the table) will be positive. Non-metals (found on the right) will be negative.

Explanation:

Okay so don't take this the wrong way when I ask this cause its for science.
How many pill do you have to take too OD??

Answers

I think  depends.......

Answer:

It depends on what medication/drug it is. Pharmaceutical drugs would be a lot before you could "od", some such as "xanax" take a short amount of time.

hope this helps!

30. The more reactive halogen elements are able to replace the less reactive halogens from their com-
pounds. For example, if chlorine gas is bubbled
through a potassium iodide solution, elemental
iodine is produced.

Cl2(8) + Kl(aq) →12(s) + KCl(aq)

Calculate the mass of iodine produced when 2.55 g
of chlorine gas is bubbled through an excess amount
of potassium iodide solution.

31. Although we usually think of substances as “burn-
ing” only in oxygen gas, the process of rapid oxida-
tion to produce a flame may also take place in other
strongly oxidizing gases. For example, when iron is
heated and placed in pure chlorine gas, the iron
"burns” according to the following (unbalanced)
reaction:

Fe(s) + Cl2(8) ► FeCl3(s)

How many milligrams of iron(III) chloride result
when 15.5 mg of iron is reacted with an excess of
chlorine gas?

please help. this is due tonight. thanks!

Answers

Answer:

n=m/mr

n of cl2=0.0713mole

Form equation

cl2+k------- I2 s+kcl

1mole of cl=I moleof I2

0.0713mole of =x of I2

X mole of I2=0.0713

n=m/mr

0.0173=m/253.9

mass of I2=18.09g

How many grams of lithium sulfide (Li2S) are in 275 g of a 16 % aqueous solution of Li2S?

Answers

Answer:

600 mAh·g−1

Explanation:

i hope this is good let me know if its wrong

What's the equation used to calculate how far a wave has traveled?

Answers

For calculating the distance that sounds travels, distance = velocity x time. Therefore, the distance between the sensor and the object is one half the distance traveled by the sound wave.

Can some right a paragraph about photosynthesis pls =))))))))))))))))))))))

Answers

Answer:

Photosynthesis is the process in which plants harness energy from the sun to make their own nutrition. The process converts light energy into chemical energy through cellular respiration.

Explanation:

Just to start you off. I hope it helps! (❛ ᴗ ❛)

Answer:

Photosynthesis is the process which a plant makes it's own food. The plant get energy from the sun and water from the soil. The plant lets the suns energy flow though so it touches all the parts that need it. When it get the water from the soil it goes into the stem and to the leaves. Photosynthesis is important because it benefits the air and us too. We can also help by put carbon dioxide. Photosynthesis is part the life cycle of a plant.

Explanation:

Boreal forests are characterized by _______ trees. A. Creosote b. Eucalyptus c. Coniferous d. Deciduous Please select the best answer from the choices provided A B C

Answers

Answer:

c

Explanation:

coniferous trees, Tianga also called Boreal forest biome (major life zone).

hope it's perfect.

Answer: C is correct.

The Theory of _________ states that new ocean crust is formed at ocean ridges where plates are diverging.

Answers

Answer- Seafloor spreading
i don’t know lol but i have to answer something

The term used to describe the Moon phases as the light spreads across the surface of the moon or grows.

Answers

Answer:

Explanation:

New moon

Waxing crescent moon

First quarter moon

Waxing gibbous moon

Full moon

Waning gibbous moon

Last quarter moon

Waning crescent moon

Answer: Waxing

Explanation: Waxing means is getting lighter.

Waning means its getting darker.

NEED HELP! thank you!
The same element is present before and after a
O chemical change
O physical change
O chemical reaction
O none of these

Answers

Answer:

This is a physical change.

Explanation:

As long as the identity of the substance has not changed, and the element is present before and after, it is a physical change! (Ex: ice melting)

HELP PLEASE | 15 POINTS Determine the number of valence electrons in each diagram shown below.

Answers

answer:

Cl = 7 valence electrons

Mg = 2 valence electrons

explanation:

in order to determine the valence electrons, just look at the outermost shell or the last shell. whatever number of electrons it has will be the number of valence electron

A sample of CO2 has a volume of 6.08 cm3 at 2.0 atm. At what pressure would this sample of gas have a volume of 42.0 cm?
А
28.9 atm
00
2.89 atm
С
0.289 atm
D
289 atm

Answers

C 0.289 why but because of decimals i’m gonna go with that one

please help me with this

Answers

Ok buddy- so if you grab your periodic table there should be numbers on the side... (REFER TOO IMAGE ONE) So then we find them on the periodic table... (REFER TO IMAGE TWO) and if we look at the number the higher it gets the more radioactive it gets, and thats why it stops because the atomic gets so high that the level can't even be able to be mad because it will just explode and when it does that its dangerous because of how radioactive it is... so if we look the more "gas" concentrated elements are seen at the top (i.e. the helium) So the order would be He, C, O, Ne, Ca, I

Then just do that for the rest of them and the numbers on the side are the positive (+) or negative (-) amount of atoms that the atom is missing or ha to be stabilized or over stabilized, but you will learn that later on when you go into periodic equations.

Hopefully this helped, have a wonderful day! :)

Why do we perform an experiment?

Answers

Answer:

Experiment plays many roles in science. One of its important roles is to test theories and to provide the basis for scientific knowledge. It can also call for a new theory, either by showing that an accepted theory is incorrect, or by exhibiting a new phenomenon that is in need of explanation.

Explanation:

Answer:

Explanation:

One of its important roles is to test theories and to provide the basis for scientific knowledge that we need to know. How are we supposed to know the answer to our question if we don't perform the experiment to test our question.


6. How many molecules are in 2.7 moles of carbon dioxide

Answers

Answer:

2.7×6.022×10^23

=16.594×10^23 moleclules

Explanation:

number of mol= 2.7

1 mol of any element=6.022×10^23

therefote 2.7 mol =2.7×6.022×10^23

=16.594×10^23

A mole is -6.022 • 10 to the 23 power of something.

So, saying you have a mole of iron atoms is like saying you have 6.022 • 10 to the 23 power iron atoms

There for you have 1.63 • 10 to the 24 power

To balance a chemical reaction you can list all the atoms on the right and left, then count, and add coefficients until the reaction is balanced. Look at the reaction below. Choose the picture that shows a balanced chemical reaction for the reaction below.

Answers

Answer:

I think option 3 is correct

Plz help meeeeeeee !!!!!

Answers

Answer:

Na2S

Explanation:

last answer with Na2S

Which of the following is an adaptation that helps protect the animal?
А
Cows have incisors.
B
Cactuses have thick stems.
с
A porcupine has sharp quills.
D
Hummingbirds have long, skinny beaks.

Answers

C ( Porcupines use there’s sharp quills to defend themselves from larger predators!)

In an ecosystem, a porcupine having sharp gills is  an adaptation that helps protect the animal.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

#SPJ6

8. Why would it be a bad idea to make coins made of sodium metal?

Answers

Answer:

Sodium reacts with the oxygen in air. It reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

It would be a bad idea to make coins made of sodium metal, beacause of their reactive nature.

What is reactive species?

Those species which are not stable in nature and always ready to show reaction with another species, is known as reactive species.

Sodium metal is highly reactive in nature, means it easly reacts with the atmospheric oxygen and shows oxidation or with the moisture content of atmosphere as a result of which vigorously catches fire. That's why we don't use sodium to make coin.

Hence, beacause of reactive nature sodium is not used.

To know more about sodium metals, visit the below link:

https://brainly.com/question/25597694

What is the electric configuration for phosphorus?

Answers

1s^2 2s^2 2p^6 3s^2 3p^3
That’s the electron configuration for phosphorus

Lokesh is sawing boards to make a deck. What is the area of the deck?
12 ft
9 ftil
6 ft
8 ft
OA. 198 square feet
O B. 234 square feet
O C. 207 square feet
O D. 171 square feet

Answers

Answer:

Explanation:

171

What is the quantity of atoms in KMnO4 ?

Answers

Answer:

Potassium permanganate has a molar mass of 158.04 g/mol. This figure is obtained by adding the individual molar masses of four oxygen atoms, one manganese atom and one potassium atom

Explanation:

Potassium permanganate has a molar mass of 158.04 g/mol.

PLS HELP

Geothermal power plants drill deep wells underneath
Earth's surface to pump water that is heated by magma. The steam from this hot water spins a turbine
that is hooked up to a generator that produces electricity. The cold water is then pumped back into
Earth to be reheated.

Do you think geothermal energy is a renewable resource? Why or why not? What are the benefits of
using this energy to power homes and businesses? Can you think of any consequences to communities
or the surrounding environment?
I

Answers

Answer:

Geothermal provides a reliable source of energy as compared to other renewable resources such as wind and solar power. This is because the resource is always available to be tapped into, unlike with wind or solar energy.

Explanation:

Because its source is the almost unlimited amount of heat generated by the Earth's core. Even in geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected, making it a sustainable energy source.

Answer:

A geothermal power plant gets energy from the heat deep below the surface of the earth. Shafts are drilled down, often as deep as several kilometres, one to pump water down to the hot rocks, and another nearby which will allow the heated water (or steam) to rise up. This steam is then used to spin electricity turbines to generate electricity.

Explanation:

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