What is the molariity of a 50.0 mL aqueous solution containing 10.0 grams of hydrogen peroxide, H2O2?

Answers

Answer 1

Answer:

6 mol/L

Explanation:

You should know or have the equation to solve for Molarity which is;

M = n/v          (M: Molarity) (n: moles of solute) (v: Liters of solute)

You can start off differently but I would start by converting the mL to L. This is your "v" value.

50.0 mL/ 1000 mL = 0.05 L

Now, you have to convert grams to moles in order to solve for molarity (M).

1.) On the periodic table find the molecular weights of H and O.

H= 1.01 g/mol         O= 16.00 g/mol

2.) Multiply them and then add them together to have their combined molecular weights. (You have to multiply by 2 because of their equation; H2O2).

2(1.01) + 2(16.00)= 34.02 g/mol

3.) Now, you're going to use the "picket fence method" or whichever your teacher taught you to convert from grams to moles. This will be your "n" value. (I cannot show it on here without it looking weird, so my sincere apologies.)

10.0 g/ 34.02 g = 0.2939 mol

4.)You are now going to plug in your answers into the equation for Molarity.

M= 0.2939 mol / 0.05 L = 5.878 mol/L

5.) I am sure your professor might be a stickler so for sig figs sake when you multiply or divide use the smallest amount of sig figs you see which is 1. Round 5.878 to 6 mol/L

Sorry this explanation is very long let me know if you need a better more written out explanation.


Related Questions

A gas has a volume of 3.00 L at 65.0 C. The same gas has a volume of 11.4 L at 105 C and 1725 mmHg. What was the original pressure of the gas?

Answers

Mm yes diirjrjejekeiejebenwkowe

Why do we use nuclear energy from power plants?

Answers

Answer:

Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity. Because nuclear power plants do not burn fuel, they do not produce greenhouse gas emissions.

Explanation:

Enjoy!

What type of bond is formed during dehydration synthesis?
O A
carbon bonds between amino acids
B.
carbon bonds between carbohydrates
C. hydrogen bonds between lipids
O D. peptide bonds between amino acids

Answers

The answer is A hope this helps

A carbon bond between the amino acids is formed in a dehydration reaction. So the correct option is A.

What is a dehydration reaction?

A reaction where two smaller molecules are combined in a chemical manner by the removal of an element from each of these molecules is called a dehydration reaction. Organic compounds are classified on the basis of structure. They are classified as aliphatic and aromatic compounds. Different kinds of chemical reactions are involved in the formation of new compounds when there is a change in bonding between the atoms.

There are some chemical reactions that form a molecule and some only show a displacement or substitution of atoms. There are synthesis or combination reactions that involve a combination of two substances to form one molecule.

On the other hand, there are decomposition reactions in which one substance decomposes to form more than one substance. There are displacement reactions which can be single or double displacement. They involve the displacement of one or more components of compounds among each other. Addition, substitution, rearrangement, elimination, and oxidation-reduction reactions are some of the common organic reactions.

Therefore, the correct option is A.

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Explain the different principles that allow roller coasters to rip and roar around the tracks. In your response, include how energy is transferred back and forth between kinetic and potential.

Answers

Answer:

In the roller coasters the potential energy that is given is the gravitational potential energy, which this energy increases its value as the object moves away from the earth, that is to say, the more height the roller coaster acquires the more gravitational potential energy it will have, and Said train where people usually get on the roller coaster will descend or descend with greater acceleration.

This gravitational potential energy once the mountain begins to descend or descend is converted into kinetic energy

Explanation:

This that we wrote above is considering that the roller coaster does not have curved routes but rectilinear, in the case that it had curved routes, a force would be added in addition to those written that is the centripetal force, it is the same force that appears in the centrifuges or dryers of clothes or the same washing machine. This force, the centripetal force is the force that draws a moving object, in a curvilinear path, towards the center of the curvature.

CAN SOMEONE HELP ME?!?! IM CONFUSED

Answers

Answer: Solar winds have an influence all the way to about 160 AU from the Sun. About how many kilometers is that?

24,000,000,000 km

48,000,000,000 km

240,000,000,000 km

480,000,000,000 km

Explanation:

Which of the following is a chemical reaction?
1- Dropping a sliced orange into a vat of Sodium Dydroxide
2-Cutting a piece of paper into two pieces
3-Filling a balloon with air
4-Freezing liquid Mercury

Answers

Answer:

1- Dropping a sliced orange into a vat of Sodium Dydroxide

Explanation:

The other answers (2-4) are only physical changes that don't change any chemical compositions.

Dropping a sliced orange into a vat of sodium dydroxide

A(n)
image cannot be projected and forms where light rays appear to originate.

Answers

Answer:

Eu não sei o que você está dizendo, mas boa sorte

Answer: Virtual

Explanation:  A virtual image is an image that can not be formed on a screen. This type of an image is formed when the rays of light appear to meet at a point after reflection or refraction. Virtual images are always erect or upright.

Frosted glass and wax paper are ____.
A) transparent
B) translucent
C) clear
D) opaque

Answers

Answer:

B) translucent

Explanation:

Light only partially passes through them.

In which two ways can the timber industry help prevent loss of forest cover and animal habitats?

Answers

Answer:

Cut trees at a sustainable rate

and

Plant one tree for every tree that is cut.

hope i helped, if i could get brainliest that would be great

The volume of an air bubble at the bottom of a lake is 1.35 mL. If the pressure at the bottom of the lake is 125 kPa and the air pressure at the top of the lake is 105 kPa, what will the volume of the bubble be when it rises to the surface?

Answers

Answer:

1.61 mL

Explanation:

Step 1:

Data obtained from the question. This includes the following:

Initial volume (V1) = 1.35 mL

Initial pressure (P1) = 125 kPa

Final pressure (P2) = 105 kPa

Final volume (V2) =..?

Step 2:

Determination of the volume of the air bubble at the surface of the lake.

This can be obtained by use the Boyle's law equation as follow:

P1V1 = P2V2

125 x 1.35 = 105 x V2

Divide both side by 105

V2 = (125 x 1.35)/105

V2 = 1.61 mL

Therefore, the volume of the air bubble at the surface of the lake is 1.61 mL

Inside the retina of our eyes are receptors called rods and cones. Rods measure the brightness we see and cones determine _____.
A) the color we see
B) the white we see
C) the dimness we see
D) the loudness we hear

Answers

I believe the answer is C. 20 characters

Can somebody please help me with these ? how many moles of AI are needed to react with 6 moles of O2?

Answers

Answer:

idkidkdkdkkdkdkdkddk

beudud

Explanation:

lolwoeo3i3iieieiekeididdo

As the kinetic energy of particles of matter increase, the distance between the particles?

Answers

The distance between the particles move farther apart. When the kinetic energy of the particles increases it causes the particles to move further apart.

what two factors does elastic potential energy depend upon

Answers

Answer: Spring constant k as well as the distance stretched

Explanation:

Elastic potential energy is Potential energy stored as a result of deformation of an elastic object, such as the stretching of a spring. It is equal to the work done to stretch the spring, which depends upon the spring constant k as well as the distance stretched.

can somebody help me name these organic compound plz​

Answers

Answer:

A. 3–Ethyl–2–methylpentane.

B. 3–Ethyl–1,5,5–trimethylcyclohexene.

Explanation:

To name the compound, we must observe the following:

1. Locate the longest continuous carbon chain. This gives the parent name.

2. Identify the substituent groups attached.

3. Locate the position of the substituent groups by giving them the lowest possible low count alphabetically.

4. Combine the above to name the compound.

Now let us name the above compounds

For compound (A)

1.The longest chain is carbon 5 i.e pentane.

2. The substitute attached are:

Ethyl => CH2CH3

Methyl => CH3

3. Ethyl comes before methyl alphabetically. But considering the structure of the compound, ethyl assume same position from either side of the compound. Therefore, we'll consider the lowest possible count for methyl. Therefore, their position is given below:

Ethyl => CH2CH3 => carbon 3.

Methyl => CH3 => carbon 2.

4. The name of the compound is:

3–Ethyl–2–methylpentane.

Compound B.

This is a cyclic structure.

1. The parent name is cyclohexene.

2. The substitute groups attached are:

Ethyl => CH2CH3

Methyl => CH3

3. Since the compound is unsaturated, the functional group is the double bond. Hence, we shall start our counting from the double bond and also considering alphabetical order of the substituent.

Please note methyl (CH3) appears three times.

Ethyl => CH2CH3 => carbon 3

Methyl => CH3 => carbon 1, 5 and 5.

4. The name of the compound is:

3–Ethyl–1,5,5–trimethylcyclohexene

Static electricity is
a closed conducting path
when electrons move easily through objects
build up of electrical charges by friction

Answers

Hey there !

The answer is C. build up of electrical charges by friction


Static electricity is a stationary electric charge, typically produced by friction, which causes sparks or crackling or the attraction of dust or hair.

Hope this helps !

Where does your body get the energy needed to transform into kinetic energy to move around all day

Answers

Answer:

food, mostly consists of what you eat.

Explanation:

The body get the energy needed to transform into kinetic energy from food.

Food:

Every body part (muscles, brain, heart, and liver) need energy to work. This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach.

The main sources of energy are: carbohydrates, lipids, and proteins.

Find more information about Food here:

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1-Which reaction shown below is carried out by nitrifying bacteria? I will mark you as brainlist
Choose:

A.{ammonium} to {nitrate}

B.{nitrate} to {nitrogen gas}

C.{nitrogen gas} to{ammonium}

Answers

Answer:

ammonium to nitrate.

Explanation:

they tie em together

how many atoms are in 50 grams of calcium

Answers

Just need the points


Calcium and vitamin D are essential to building strong, dense bones when you’re young and to keeping them strong and healthy as you age. The information included here will help you learn all about calcium and vitamin D – the two most important nutrients for bone health.

What is Calcium and What Does it Do?

Cheese, milk, fish, almonds, and other bone-healthy foods
A calcium-rich diet (including dairy, nuts, leafy greens and fish) helps to build and protect your bones.
Calcium is a mineral that is necessary for life. In addition to building bones and keeping them healthy, calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth.

Every day, we lose calcium through our skin, nails, hair, sweat, urine and feces. Our bodies cannot produce its own calcium. That’s why it’s important to get enough calcium from the food we eat. When we don’t get the calcium our body needs, it is taken from our bones. This is fine once in a while, but if it happens too often, bones get weak and easier to break.

Too many Americans fall short of getting the amount of calcium they need every day and that can lead to bone loss, low bone density and even broken bones.

How Much Calcium Do You Need?

The number of atoms in an elemental atom can be estimated by Avogadro's number or the number of equivalents. In 50 grams of calcium, there are 7.53 × 10²³ atoms.

What is Avogadro's number?

Avogadro's numbers are used to estimate the number of smaller entities like the number of atoms and molecules in a compound for a substance. It determines the atom in a given mass of the atom. Avogadro's number (Nₐ) is equal to 6.022 × 10²³.

Given,

Mass of calcium = 50 gm

The molar mass of calcium = 40 gm/mol

The moles are calculated from mass and molar mass as:

Moles = mass ÷ molar mass

n = 50 ÷ 40

= 1.25 mol

It is known that a mole of a substance contains Nₐ atoms.

1 mol =  6.022 × 10²³ atoms

Then, 1.25 mol = 1.25 × 6.022 × 10²³

= 7.53 × 10²³

Therefore, there are 7.53 × 10²³ atoms in 50 grams of calcium.

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A plant was placed in the corner of a room away from a window. What might you observe about the plant after five days?
Select one:
The plant is leaning toward the window.
The plant is not affected by the light in the window.
The plant is standing straight up from the pot.
The plant is leaning away from the window.A plant was placed in the corner of a room away from a window. What might you observe about the plant after five days? Select one: The plant is leaning toward the window. The plant is not affected by the light in the window. The plant is standing straight up from the pot. The plant is leaning away from the window.

Answers

Answer:

1. A. The plant leans toward window.

Explanation:

Plants need light to perform photosynthesis and live. Therefore, this means the plant will always lean toward light in order to survive.

- Hope that helps! Please let me know if you need further explanation.

Answer

Last one I think

Explanation:

Which of the following is a chemical property of liquid water?
Its density is 1.00 g/cm3.
It reacts with sodium metal to form sodium hydroxide and hydrogen gas
It flows.
It freezes to form ice.
It boils at 100°C.

Answers

Answer:

B) it reacts with sodium metal to form sodium hydroxide and hydrogen gas

Explanation:

B is the only option that show a chemical property, density, freezing, and boiling points are physical properties.

According to plate tectonics, the continents.
do not move at all
are drifting on a sea of magma
will one day be joined together
"float' on top of the crust

Answers

Hey there!

The answer would be B. are drifting on a sea of magma.


The crust is broken up into giant tectonic plates that ride atop the magma, hot melted-rock material that makes up much of the interior of the Earth. Convection in the molten rock of Earth's mantle drives the movement of the plates. Hotter material rises to the surface, while cooler material sinks toward the core.

Hope this helps !

Answer:

are drifting on a sea of magma.

Explanation: Please mark brainliest.

A fox spots a rabbit in a field. The fox begins to chase the rabbit, and the rabbit runs away. Which statement best describes the rabbit's behavior in response to the stimulus of being chased?
Select one:
The rabbit's behavior is a response caused by an internal stimulus.
The rabbit's behavior is a tropism.
The rabbit's behavior is a fight-or-flight response.
The rabbit's behavior is a response caused by hunger.

Answers

Answer:

C. The rabbit's behavior is a fight-or-flight response

Explanation:

The rabbit has a fight or flight response which means that when there is danger, the rabbit will either fight it or run away. In this case it ran away

The response of the rabbit in response to the fox chasing has been the fight and flight response. Thus, option C is correct.

What is a stimulus?

A stimulus can be given as the physical or the chemical messenger that mediates the formation of the functional change in the body. The reaction to the stimulus has been the spontaneous reaction that can form the sudden response forming reaction.

The fox chasing the rabbit has been mediating the formation of the stimulus. The chasing act as the stimulus to the rabbit forming the rabbit to create the response or reaction of running. The reaction that forms with the stimulus of fear and frightening has been the fight and flight response.

The stimulus that has been formed arouses the fear of getting caught and works as the fight and flight response. Thus, option C is correct.

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How does the pressure of a container change as the volume is changed?

Answers

Answer: If the volume is decreased, the pressure would increase because the gas molecules have less space to move around. Same goes for the opposite; if the volume increased, the pressure would decrease because the molecules have more space to move and aren't packed as tightly .  

Hope this helps!!!

Consider this reaction:
N2 (g) + 3H2 (9) = 2 NH3 (9). If Q ea, which statement is true?
O A.
The reaction will move forward.
B.
The reaction will move in reverse.
C.
The concentration of the product should decrease.
D.
The concentrations of the reactants should increase.
E.
The reaction is in equilibrium.

Answers

Answer:

Explanation:

its E

trust me i got a 100

Answer:

E. The Reaction Is In Equilibrium.

Explanation:

Plato Answer

How does activation energy affect the progress of a reaction?
O A. The reaction will not occur unless the activation energy is met.
B. The activation energy decreases the energy needed for a reaction
to progress.
C. The activation energy increases how quickly the reaction will
progress.
D. The activation energy determines equilibrium concentrations of
products.

Answers

Answer:

The reaction will not occur unless the activation energy is met.

Explanation

Answer:

A. The reaction will not occur unless the activation energy is met.

Explanation:

a.p.e.x

What is the similarity between speed and vilocity

Answers

Speed and velocity both represent a way to measure the change in position of an object relative to time. In fact, for a straight line motion, the speed and velocity of an object are the same (since distance and displacement will be the same). Speed and velocity are measured in the same units: meters per second or m/s.
Hope this helps!

The mole concept will most likely be used in
calculating the average height of a mountain range.
measuring how many liters of gasoline are poured into a tank.
determining how many ozone molecules are lost in the atmosphere.
finding the mass of a piece of steak in a butcher shop.

Answers

Answer:

determining how many ozone molecules are lost in the atmosphere

Pls Mark as Brainliest!!! if this helps...

The mole concept The mole concept can be used to determine the number of ozone molecules are lost in the atmosphere.

The mole concept was introduced by Avogadro. The mole is the SI unit of amount of substance. According to Avogadro, one mole of a substance contains 6.02 × 10^23 atoms, ions, molecules etc.

The mole concept is important in many chemical calculations. The mole concept can be used to determine the number of ozone molecules are lost in the atmosphere. (option C)

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To measure the volume of a washing machine, use:
liters
kiloliters
kilograms
tons

Answers

Answer:

kg

Explanation:

Answer:

You should use tons or kilograms because a washing machine is very heavy.

(Hope this helps)

A 350. mL air sample collected at 35 degrees C has a pressure of 556 mm Hg.
What pressure will the air exert if it is allowed to expand to 425 mL at 57 degrees
C? Show your work in the space below.​

Answers

Answer:

485 torr

Explanation:

Explanation:

We can solve this equation using the combined gas law:

P1V1/T1=P2V2/T2

Remember, always use the absolute (Kelvin) temperature when working with gas equations.

The temperature conversions are

T1=C+273=35o+273=308K

T2=57C+273=330K

Since we're trying to find the final pressure, let's rearrange this equation to solve for

P2:

P2=P1V1T2/T1V2

Our known values:

P1= 550 torr

V1=350mL

T1=308K

V2=425"mL

T2=330K

Let's plug these into the equation to find the final pressure:

The final pressure after it is subjected to these changes is thus 485torr

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