How many grams of NaCl are needed to prepare 1.20 liters of a 2.00 M solution?

Answers

Answer 1

Answer:

140 grams NaCl is needed

Explanation:

i used this How many grams of NaCl in 50 mL of 0.75 M NaCl solution? The MOLARITY of a solution is determined by the ratio of moles of solute, (the material being dissolved), compared to the liters of solution. the equation is M = mol L For this NaCl solution we have a Molarity of 0.75 in 50 mL of solution. Then i multiplied it by the correct amount


Related Questions

a. What is the mass in grams of 4.2 mols of FeO2?​

Answers

4.2 Mols FeO2 * 71.844g/1mol = 301.74g FeO2

According to mole concept, there are 368.928 g  mass in 4.2 moles of FeO₂.

What is a mole?

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Number of moles=mass/molar mass

Thus, mass=4.2×87.84=368.928 g.

Thus, there are 368.928 g  mass in 4.2 moles of FeO₂.

Learn more about moles,here:

https://brainly.com/question/26416088

#SPJ2

PLEEASE HELP TIMED WILL GIVE BRAINLIEST TO CORRECT ANSWER NLY PLEASEEEE HELPPPP

Answers

Answer:

1) 1.15 mol

2) M=0.45

3) 22.5 mL

4) 6.25 mL

Explanation:

1)

550 mL= 0.55 L

M= mol solute/ L solution

mol solute= M * L solution

mol solute= (2.1 M * 0.55 L )        M=1.15 mol solute

2)

155 mL = 0.155 L

80 g  -> 1 mol NH4NO3

5.61 g -> x

x= (5.61 g * 1 mol NH4NO3)/80 g       x= 0.07 mol NH4NO3

M=(0.07 mol NH4NO3)/0.155 L         M=0.45

3) M1V1=M2V2

V1= M2V2/M1

V1= (0.500 M * 0.225 L)/5.00 M             V1=0.0225 L =22.5 mL

4) M1V1=M2V2

V1= M2V2/M1

V1= (0.25 M * 0.45 L)/ 18.0 M

V1=6.25 x 10^-3 L = 6.25 mL

Answer:

?

Explanation:

bases have a pH of

a. more than 7
b. less than 7
c. 7

Answers

Answer:

Bases are more then 7

acids are less then 7 neutral is 7 and bases are more than

Answer:

A. More than 7

Explanation:

ph scale, bases are to the right

what is the compound of p2o5

Answers

Answer:

Phosphorus pentoxide is a chemical compound with molecular formula P4O5 (with its common name derived from its empirical formula, P4O5). This white crystalline solid is the anhydride of phosphoric acid. It is a powerful dessicant and dehydrating agent.

Explanation:

it would be phosphoric acid.

which is correct? not sure which is right

Answers

Answer:

butane

Explanation:

Relate dark matter to the development of the universe after the Big Bang. In 3-5 sentences, speculate on how the development of the universe would have been different if there had been no dark matter. In your answer, use the term structures.

Please answer if you do i will mark you as brainliest

Answers

Answer:

Without dark matter galaxies would loose an extreme amount of gas required to create stars.

Without dark matter the universe wont have as many galaxies clumped together forming larger versions of those galaxies. This would cause a change in the structure of the "skeleton" of the web.

(Hope this can help, I didn't do exactly as it is said to because that is your job)

:)

Explanation:

Forbes gives somewhat of an explanation if you are curious.

(Ethan Siegal, "The Universe Would Be Very Different Without Dark Matter", Forbes)

Dark matter makes up most of matter in the universe and is found by a quarter of the total composition of the space. After the event of the big bang, the universe expanded and dark matter grew.

Dark matter accounts for about 85% of the matter in the universe. Its presence can be felt in the gravitational effects. Dark matter doesn't interact with the electromagnetic field. After the big bang event, the dark matter still can be found in larger galaxies and contest about 26% of mass-energy and 69% of dark energy. If there had been no dark matter there would be no structure of the cosmic web of galaxies. That is there would be no connection between the galaxies and would remain in isolated fragments.

Thus dark matter is a link within and with the comic web.

Learn more about the dark matter and its development-related after the big bang event

brainly.com/question/16725768.

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

Answers

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.

Which of the following compounds contains covalent bonds? *

Cs₂O
Fe₂O₃
NaCl
CCl₄

Answers

NaCI

Explanation:

I just worked this out the day before

Which of the following statements is true?

Sound vibrations are changed into electrical impulses by the eardrum.
It is dangerous to listen to sounds over 160 dBs.
High-pitched sounds have low frequencies.
All of the above.

Answers

Ya I don’t know I will try because plus is 8 is none one i I k will send

Answer:

all of the above!! :)))

Explanation:

Which formula represents an alkane?
1.
C2H2
2.
C2H4
3.
C3H4
4.
С3Н8

Answers

Answer: Option 4) is correct.

Explanation: It is correct because alkanes have a general formula CnH2n+2. So, all we need to do is substitute and find out how many hydrogens are needed to make the formula an alkane. I am not really good at explaining. I am sorry If I confused you.

Alkanes are the organic compound which has general formula [tex]C_{n}H_{2n +2}[/tex] which satisfies the formula [tex]C_{3}H_{8}[/tex]. Hence [tex]C_{3}H_{8}[/tex] represents an alkane.

Alkane

Alkanes are simplest saturated hydrocarbon. Alkanes are also known as paraffins wax. Alkanes which contains only carbon and hydrogen atoms.

General Formula of Alkane

The general formula of alkane is [tex]C_{n} H_{2n + 2}[/tex] where n = 1, 2, 3, 4.......  

Consider Option 1, [tex]C_{2}H_{2}[/tex] here n = 2 now put the value of n in above formula, we get: [tex]C_{2} H_{2 \times 2 + 2}[/tex] = [tex]C_{2} H_{4 + 2}[/tex] = [tex]C_{2} H_{6}[/tex] , so option 1 does not satisfies the above formula. Hence it is incorrect. Consider Option 2, [tex]C_{2} H_{4}[/tex] here n = 2 now put the value of n in above formula, we get: [tex]C_{2} H_{2 \times 2 + 2} = C_{2} H_{4 + 2} = C_{2} H_{6}[/tex], so option 2 does not satisfies the above formula. Hence it is incorrect. Consider Option 3, [tex]C_{3} H_{4}[/tex] here n = 3 now put the value of n in above formula, we get: [tex]C_{3} H_{2 \times 3 + 2} = C_{3} H_{6 + 2} = C_{3} H_{8}[/tex], so option 3 does not satisfies the above formula. Hence it is incorrect. Consider Option 4, [tex]C_{3} H_{8}[/tex] here n = 3 now put the value of n in above formula, we get: [tex]C_{3} H_{2 \times 3 + 2} = C_{3} H_{6 + 2} = C_{3} H_{8}[/tex], so option 4 satisfies the above formula. Hence it is correct.

Thus, from the above conclusion we can see that option 4 [tex]C_{3}H_{8}[/tex] represents an alkane.

Learn more about the alkane here: https://brainly.com/question/16837399

#SPJ2

The two products that are formed when a solution of HNO3 and a solution of NaOH react are water and?

NaNO2

NaNO3

NaHNO

NaHNO3

Answers

Answer:

NaNO3

Explanation:

Hello,

In this case, the required reaction is an acid-base neutralization reaction which is said to be:

[tex]HNO_3+NaOH\rightarrow NaNO_3+H_2O[/tex]

There, we see that the sodium displaced the hydrogen in the nitric acid to form sodium nitrate a very used salt in the industry, so, as a result of that displacement, water is formed as the secondary neutralization product. For the above mentioned, answer is NaNO3 .

Best regards.

Answer: NaNO3

Explanation:

A salt sodium nitrate (NaNO3) is formed alongside water (H2O) when HNO3 and a solution of NaOH undergoes a neutralization reaction.

HNO3 + NaOH -------->  NaNO3   + H2O

pls help Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and what role does it play? A) Light is required to provide energy for photosynthesis. B) ATP is required as an energy source for photosynthesis. C) Glucose is required as an energy source for photosynthesis D) Oxygen is required to split water molecules in photosynthesis.

Answers

Answer:

A) light is required

Explanation:

ATP, Glucose, and oxygen are created from the process

How many copper atoms are in 70 grams of copper

Answers

1.10156422119408 moles

An exothermic reaction releases 13,450J of heat. How many calories of energy are released? A) 5 56,274 calories B)1,244 caloriesC) 134,500 caloriesD) 3,215 calories

Answers

Answer:

The correct option is;

D) 3,215 calories

Explanation:

Here we are required to convert 13,450 J to calories

1 calorie is the amount of heat required to raise the temperature of 1 gram of water by 1°C

Therefore, 1 calorie = 4.184 Joules

Hence, 1 Joule = 1/4.184 calorie for which we have;

13,450 J = 13,450 × 1/4.184 calories = 13,450/4.184 calorie

13,450 J = 3,214.63 calories

Rounding up to the nearest  whole number, we have;

13,450 J ≈ 3,215 calories.

What specifically do vaccines contain which cause your body to become
immune to specific pathogens? *

Answers

certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.

Answer:

I'm not entirely sure, but I've heard that vaccines contain very weak amounts of the virus in order to expose your body to it, so that your body can become immune to it before being exposed to the real thing.

So basically, a flu shot contains a weak version of influenza.

I don't know this for sure, but hopefully this helps!

How did Robert Goddard contribute to space exploration?
He was the first person in space.
He was the first person to walk on the moon.
He was the first person to use liquid fuel for rockets.
He designed and built the first space station.

Answers

Answer:

He was the first person to use liquid fuel for rockets.

Question 3 of 10

5 Points

Match the approximate percentage of the world's water to where it is stored.

Salt water

97 percent

Ice caps and

glaciers

2 percent

Fresh liquid

water

1 percent

Answers

Answer:

salt water 97%

fresh water 1%

frozen 2%

Explanation:

I need the correct answer

Answers

Answer:

d.

Explanation:

They can be spread through contaminated surfaces.

Answer:

d

Explanation:  pathogens csnnot be spread be sontaminated surfesec

Which of the following is most likely a homogeneous mixture?
O A. A tossed vegetable salad
B. Chunky peanut butter
O C. Chocolate chip cookies
OD. A vanilla milkshake

Answers

Answer:

D)A vanilla milkshake

Explanation:

D) A vanilla milkshake.

That’s the case because you can’t physically separate the different posts that make up the mixture.

After constructing the circuit, Aliyah and Jeremy noticed that the light bulb stays on all the time. This means the batteries will get used up when the flashlight does not need to be on. What is something Aliyah and Jeremy can do to solve this problem?

Answers

Answer: Implement a switch

Explanation:

This forms a circuit break or way to easily turn the flow of electricity on or off.

What is the oxidation state of Fe(s)

Answers

The  oxidation state is zero for Fe (s)

A boy jumps into a cold swimming pool and his body temperature goes down. His muscles, blood vessels, and nervous system work together to restore his body temperature. These responses allow the body to maintain--- Select one: stress balance work structure

Answers

Answer:

balance

Explanation:

How do you convert kilometers to grams

Answers

By multiplying the mass value by 1000.

Answer:

Hey!

What you have to do is to multiply the amount of mass  * i.e. 67.9g * by 1000 * 67,900kg! *

Explanation:

HOPE THIS HELPS!

PLEASE HELP I WILL GIVE BRAINLEST! what is life about?

Answers

Answer:

To live for God.

Explanation:

We are Gods creation. We are here to live for the Lord, to do love& to help save each other so when time comes we will be forever blessed.

Answer:

life is about life I think

What element is in group 17 and period 3 of the periodic table?

Answers

Answer:

Chlorine is the element located in period 3, group 17 of the periodic table.

Explanation:

Answer: Chlorine

Explanation:

In the reaction N2 + 3H2 - 2NH3, how many
grams of H, are needed to produce exactly I mole
of ammonia?
A. lg
B. 2g
C.3g
D.4g

Answers

Answer:

B. 2g

Explanation:

So first you have to find the mole to mole ratio then convert it to grams if that makes sense. So the mole to mole ratio is 2 ammonia to 3 hydrogen gas. So then after you do that conversion you can solve for grams then. Sorry I am not that great at explaining.

A chemist needs 2.00 liters of hydrochloric acid. How many pints is this?

Answers

Is that supposed to say 200/2.00??

Answer:

4.22675

Explanation:

If a gas occupies 22.4 L at 0.265 atm, then what will the pressure be in atmospheres if the gas occupies 35.52 L? Assume all other
variables are held constant
A)0.167 atm
B)0.437 atm
C)0.886 atm
D)149 atm

Answers

Answer:

The new pressure is 0.167 atm

The correct answer is option A

Explanation:

Step 1: Data given

Volume of the gas = 22.4 L

Pressure of the gas = 0.265 atm

The volume increases to 35.52 L

Step 2: Calculate the new pressure

P1*V1 = P2*V2

⇒with P1 = the initial pressure = 0.265 atm

⇒with V1 = the initial volume = 22.4 L

⇒with P2 = the new pressure = TO BE DETERMINED

⇒with V2 = the increased volume = 35.52 L

0.265 atm * 22.4 L = P2 * 35.52 L

P2 = (0.265 atm * 22.4 L) / 35.52 L

P2 = 0.167 atm

The new pressure is 0.167 atm

The correct answer is option A

The _____ of a weak acid is strong.

a. conjugate acid
b. conjugate base
c. acid
d. base

Answers

Answer: conjugate base

Explanation:

According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.

A weak acid has a strong conjugate base whereas a strong acid has a weak conjugate base. Similarly a weak base has a strong conjugate acid whereas a strong base has a weak conjugate acid.

[tex]CH_3COOH+NH_3\rightarrow CH_3COO^-+NH_4^+[/tex]

Acetic acid [tex]CH_3COOH[/tex] is weak acid which has strong conjugate base [tex]CH_3COO^-[/tex]

60.0 g of NH Cl are dissolved in 100 grams of water at 60.0° C. This solution is
A
supersaturated
B
saturated
С
unsaturated
D
none of the above

Answers

Answer:

B) is the correct answer

Other Questions
True or False: Too much carbon in seawater prevents clams, snails, and othersea animals from growing their shells. 12. Use the graph of f(x) to find the solutions to the equation f(x)=0 (1 point)two solutions: r= -10,2two solutions: x = 10.-2one solution: x= 10no solutions whats the product of 6 and q An assembly line is operating satisfactorily if fewer than 2 % of the phones produced per day are defective. To check the quality of a day's production, the company randomly samples 5 0 phones from a day's production to test for defects. Define the population of interest to the manufacturer. all the phones produced during the day in question the 50 phones sampled and tested the 2% of the phones that are defective the 50 responses: defective or not defective A loop with a break in it that prevents current from flowing is called a(n)_______circuit. 14)when determining if a child has down syndrome characteristics, which of the followingwould not be present? Why did the people of Egypt not revolt against the pharaoh even though they had to pay high taxes and work on major building projects? How do you calculate the number of protons, neutrons, and electrons in an element? Graph x^3 + 3x^2 x 3 = 0. What are the solutions to the equation?x = 3, x = 0, and x = 1x = 3, x = 1, and x = 0x = 3, x = 1, and x = 1x = 1, x = 1, and x = 3 The only thing that makes one kind of light different from another is its ____? A) frequency B) colorC) wavelength D) temperature Allie. Bentie and Charlie share 46.The amount Alfie and Bertie get is in the ratio 9:5The amount Bertie and Charlie get is in the ratio 2:1How much does Alfie get? List 5 stages of the policy life cycle? The devil how do people face death What are economic products? Find the slope of this line: y=2x+7 How does the use of rhetoric in this excerpt advance the viewpoint that France is a beautiful place?It is wonderful. There are no unsightly stone walls and never a fence of any kind. There is no dirt, no decay, no rubbish anywherenothing that even hints at untidinessnothing that ever suggests neglect. The repetition emphasizes how clean, orderly, and well-kept everything is in France. The alliteration drives home the point that France is well-taken care of by its people. The hyperbole emphasizes the effect the beauty of France has on Twain. The extended metaphor gives the reader a clear image of the beauty of France. Which term can be added to the list so that the greatest common factor of the three terms is 12h3? 36h3, 12h6, __________ Whats the answer??? And please explain I am thinking of two unique whole numbersTheir sum is 12The larger number is evenTwice the smaller number less than the larger number equals 6 What is the depth of field? How can you adjust the depth of field in a photograph