How many grams of NaOH are needed to make 250mL of a 0.1M NaOH solution?

Answers

Answer 1

Answer:

To make 250 ml of 0.1 M NaOH, you dissolve 1 gram NaOH in enough water to make a final volume of 250 mls.

Explanation:

Your welcome! :)


Related Questions

Why can’t neon store energy in this way?

Answers

Answer:

Neon is a noble gas, it is monoatomic in nature, which implies that it has only one atom present. If we compare neon with water, water has three atoms present, two hydrogen atoms and one oxygen atom. Hence water stores more energy than neon because it is polyatomic and contains chemical bonds.

mention two examples each of solid liquid and gaseous Alkanes​

Answers

Water gasoline ice your welcone

Answer:

gas ; methane , ethane  

liquid ; octane , hexane

Explanation;

i cant find solid dear

pls help anyone with an example of a  solid alkanes

If the pH of a solution is 3, its pOH is

Answers

Explanation:

If the pH of a solution is 3, its pOH is 14-3= 11

Which of these is true for natural selection but not artificial selection?

A.Humans choose specific organisms to reproduce.

B.Competition for resources determines reproductive success.

C.Unfavorable traits decrease in frequency in a population.

D.Genetic engineering introduces new traits into a population.

Answers

Answer:

B

Explanation:

Given the reaction:
Ca + 2H,0→ Ca(OH)) + H2
How many moles of H,O are needed to exactly react with
2.0 moles of Ca

Answers

Answer:

4

Explanation:

because use the molar ratio of

ca:h2o

1:2

2;4

so u times it by 2 .

hope this helps:)

How many moles are in 4.01x10^24 particles?

Answers

Answer:

6.64

Explanation:

so moles

[tex] \frac{number \: of \: \: particles \: }{6.02 \times {10}^{23} } [/tex]

then do =4.01×10^24/6.02×10^23

you get the answer as 6.6445 u only need to write the answer to

3.S.F 6.64 moles

hope this make sense :)

Determine the mass of the following samples.
7.52 X 10 25molecules of NH3

Answers

Explanation:

Find moles first

moles = number of particles/ 6×10^23

= 7.52 ×10^25 / 6×10^23

=125.33

calculate molar mass

(1×14) +(3×1) =17

convert to mass

mass= moles × molar mass

=125.33 × 17

=2130.67g

This is a pretty big value usually it's smaller but I'd assume it's because the number of particles was large.

Use the reaction N2(g) + 3H2(g) 2NH3(g) to answer the following questions

a. 1 pt: What does Le Châtelier's principle predict would happen to the equilibrium conditions if N2(g) + 3H2(g) were added to the system?

b. 1 pt: What would happen to the equilibrium if the pressure were decreased?

c. 2 pts: Write the equation for calculating Keq

d. 3 pts: Calculate the value for Keq given the following concentrations

[NH3] = 6 M

[H2] = 4 M

[N2] = 3 M

Answers

Answer:

K

C

=

[N

2

][H

2

]

3

[NH

3

]

2

N

2

+3H

2

⇌2NH

3

=

(1.5×10

−2

)(3×10

−2

)

3

(1.2×10

−2

)

2

=

1.5×10

−2

×27×10

−6

1.44×10

−4

=

40.5×10

−4

1.44

=0.035×10

4

What is the simplest whole number ratio of atoms in a molecule or formula unit called?
the molecular formula
the molar mano
the percent composition
the empirical formula

PLEASE HELPP

Answers

The empirical formula

Can some answer this?

Answers

I think the answer is B. Can you give me brainliest? Ty!

any artist out there?

I need help knowing what colors I should use for a painting.​

Answers

you can explain your question i can help if i know it

Answer:

You could use red, blue, yellow, white, black, brown, green, orange, purple

Other useful colors:

Payne grey

Yellow or golden ocher

Titanium buff or raw titanium

Explanation:

Hydrazine, N2H4, reacts with dinitrogen tetroxide, N2O4:

2 N2H4 (l) + N2O4 (g) → 4 H2O (l) + 3 N2 (g)

When 0.10 mol of hydrazone reacts with 0.10 mole of dinitrogen tetroxide, which of the following quantities would be consumed or produced?

Select one:

Answers

Answer:(I)+3 N2(g) that is correct

Explanation:

I. Witch direction does the electric field point at a position directly west of a positive charge

Answers

Answer:

The answer is North

Explanation:

The direction of the field is taken to be the direction of the force it would exert on a positive test charge.

A solution in which the [H+] is 1.0 X 10-4 mol/L is said to be:

Answers

The answer would be Acidic (4.0) hope this helps!!

Indica en qué modelos se fueron descubriendo las partículas atómicas y las unidades en la que se expresan su masa y su carga eléctrica

Answers

Answer:

En total son 8 modelos, en la explicación los nombraremos por orden de antigüedad.

Explanation:

Modelo atómico de Demócrito (450 a.C.)

Modelo atómico de Dalton (1803 d.C.)

Modelo atómico de Lewis (1902 d.C.)

Modelo atómico de Thomson (1904 d.C.)

Modelo atómico de Rutherford (1911 d.C.)

Modelo atómico de Bohr (1913 d.C.)

Modelo atómico de Sommerfeld (1916 d.C.)

Modelo atómico de Schrödinger (1926 d.C.)

If crystal growth does not start on its own after the solution in the flask returns to room temperature, identify the best ways to promote this process. Select one or more: Add a bit of solid as a seed crystal. Scratch the bottom of the flask gently with a stirring rod. Place the flask on a hot plate to evaporate some solvent. Add ice cubes to the solution.

Answers

Answer: The best way to promote the process are:

--> Add a bit of solid as a seed crystal.

--> Scratch the bottom of the flask gently with a stirring rod.

Explanation:

A crystal growth is seen is SUPERSATURATED solutions which contains more solute than it can normally dissolve at that given temperature. It is usually very UNSTABLE and capable of releasing the excess solute if disturbed, either by shaking or seeding with a tiny crystals.

Crystallization can be used for the separation of two salts with different solubilities as well as for purification of a soluble salt that contains insoluble solid impurities. Recrystallization improves the validity of the process. Crystallization can be initiated by:

--> Scratching the bottom of the flask gently with a stirring rod: scratching initiates crystallization by providing energy from the high-frequency vibrations.

--> Adding a bit of solid as a seed crystal: Seed crystals create a nucleation site where crystals can begin growth.

the element magnesium has 3 orbital and 3 electrons true or false​

Answers

Answer: True

Explanation:

How many grams of silver nitrate will be needed to produce 8.6 g of silver?

Answers

Answer:

13.5g of AgNO3 will be needed

Explanation:

Silver nitrate, AgNO3 contains 1 mole of silver, Ag, per mole of nitrate. To solve this problem we need to convert the mass of Ag to moles. Thee moles = Moles of AgNO3 we need. With the molar mass of AgNO3 we can find the needed mass:

Moles Ag-Molar mass: 107.8682g/mol-

8.6g * (1mol / 107.8682g) = 0.0797 moles Ag = Moles AgNO3

Mass AgNO3 -Molar mass: 169.87g/mol-

0.0797 moles Ag * (169.87g/mol) =

13.5g of AgNO3 will be needed

URGENT!! 7.(06.02 MC)
A list of changes is shown.

A. Temperature decreases

B. Intermolecular bonds become weaker

C. Melting

D. Intermolecular bonds
become stronger

E. Temperature remains constant

F. Temperature increases

G. Vibration of molecules slows down

H. Molecules vibrate faster

Which of the above changes would be accompanied by an increase of the kinetic energy of particles in a solid? (5 points)

1. A, B, C, and H
2. A, C, D, and G
3. B, E, F, and G
4. B, C, F, and H

Answers

Answer:

3.B,E,F and G

Explanation:

1.A,B,C and H

Answer:

4. B, C, F, and H

Explanation:

The compounds that form from the bonding of the hydroxyl group (-OH) to a hydrocarbon are called the aldehydes.
True
False

Answers

i think its true, not 100% sure tho

Answer:

False.

I just got it right, lol.

what form of the ideal gas law would you use to calculate the volume of gas

Answers

Answer:

V = nRT/P

Explanation:

The ideal gas law states that

PV=nRT

where P = pressure, V = volume, n = number of moles, R = ideal gas constant, and T= temperature

P V = n R T

to get V on its own, divide both sides of the equation by P

V = (nRT)/P

Which has more molecules in it 10g H, 0 or 10g NaCl*
A)010g of H0
B)10g of NaCl
C)They have the same number of molecules
D)Cannot be determined

Answers

10 grams of hydrogen

Answer:

10 grams of hydrogen

Explanation:

It is the gametes formation of a sex cells or reproductive cells.​

Answers

Answer:

Meiosis

Explanation:

.bnsksksksjabsn...

Answer:

sana makatulong po sainyo

Struggling on this problem.

Answers

Answer:

4Al + 3O2 ----> 2Al2O3

Explanation:

first blank 4

second blank 3

third blank 2

Which BEST describes how the genetic color variation within the beetle population helps them to survive? A. The color variation helps them to locate food B. The color variation helps them avoid predators C. The color variation helps them compete for resources D. The color variation helps them find mates for reproduction

Answers

Answer: B

Explanation: The beetles would be able to use their genetic color to learn how to adapt to the environment and hide from predators.

The statement, that describes the genetic color variation within the beetle population helps them to survive is "the color variation helps them avoid predators."

What is genetic variations?

Genetic variations that can exist in a human population include skin color, hair color, dimples, freckles, and blood type. Human skin tone is a classic changeable characteristic that is regarded to be adaptive. Natural selection can result in major changes in the appearance, behavior, or physiology of individuals in a group in a matter of generations.

What is color variation?

Meiosis and sexual reproduction combine various alleles in novel ways to generate genetic variety once new alleles emerge. Because of natural selection, green beetles outnumber red beetles. Color diversity can involve camouflage, and beetles could utilize their genetic color to learn how to adapt to their surroundings and hide from predators.

Because this feature has a genetic foundation, the surviving beetles have progeny of the same hue. Brown coloring, which permits the beetle to have more offspring, becomes increasingly prevalent in the population.

Hence the correct option is B.

Learn more about genetic color variation here

https://brainly.com/question/9983861

#SPJ2

How many atoms are in 0.432 g of KNO3? Round your answer to three significant
figures.
A…2.58 x 1021
B…7.10 x 10-27
C…0.00428
D…43.6

Answers

A

I did it and got this but it know the first one is right as it only missing of some point it will be calculator error and also the answer is to the power of 21.

hope this make sense :)

URGENT PLEASE HELPIf 25 grams of liquid water releases 75J of heat when water cools from 88 degrees Celsius what is the final temperature?​

Answers

Answer:

HEY RUBY!! WE ARE BOTH FAILING!!!!!!!

Explanation:

#&-78$#'☠️

Which term is used to measure a star's brightness?​

Answers

Answer:

Magnitude

Explanation:

Astronomers define star brightness in terms of  magnitude (how bright the star appears from Earth)

Select the correct answer.
What does the empirical formula of a compound describe?
Ο Α. .
the type and number of atoms
OB.
the type and ratio of atoms
O C.
the number of atoms
OD
the type and mass of atoms
Reset
Next

Answers

Answer:

b

Explanation:

cause empirical formular is the elementary or the foundation for molecular formula and molecular formula depends on the empirical formula

number 2 pls help me :):)

Answers

Answer:None of the tunes make a correct statement the third choice is closed but may still dating the pencil operates broken because the light been to a zoo from a straight line when it across the boundary between air and water

Explanation:

Other Questions
On the first day of training, Aretha holds a plank position for 30 seconds. She increases her time by 20% each day. What is the first day on which Aretha holds a plank for over a minute? Show your work Find |23| absolute value Can someone helpMe please HURRRYYYY I NEED AN ANSWER Which box plot represents the data set 2, 4, 6, 8, 10, 12?0246oo1012024681012024681012 Calcula el volumen. Largo: 50cm Largo: 35cm Largo: 40cm Ancho: 30cm Ancho: 20cm Ancho: 60cm Alto: 20cm Alto: 50cm Alto: 30cm Volumen: ___________ Volumen:______ Volumen:_______ Find the volume of the prism.With composte solids, all you have to do is find the volume of each and then add them together Which statement most accurately describes the satire that exists within chapter 5 of The Adventures of Huckleberry Finn?Twain is satirizing societys greed by having Hucks father return under the pretense of caring for Huck when all he really wants is money.Twain is satirizing societys dishonesty by having Huck hide his money to appear as though he is too selfish to share with his own father.Twain is satirizing societys disrespect by characterizing Huck as someone who is so rude that he cannot even treat his father with respect.Twain is satirizing societys ingratitude by characterizing Huck as someone too selfish to appreciate anything his father has ever done for him. Change the following sentences in to present perfect tenseI will enjoy all days with him Ive been staring at this problem for 10 minutes and still have no idea what form of the ideal gas law would you use to calculate the volume of gas development in hydroelectricity can help Nepal be a developed country justify the statement in your own wordscan anyone plz say it How do you think you as an Individual can Impact public policy, now that you have an opinion onsuch a topic about animal testing A decision can be described as or the best course of action that is derived/ selected after through consideration I will give u brainliest and 5 star and thanks if its correct quick answer please ...Five identical capacitor plates each of area A are arranged such that adjacent plates are at a distance d apart . The plates are connected to a potential difference of EMF V as shown in the figure. The capacitance : Refer to the article "The Future of Money" in your Money, Money, Money magazine for a complete version of this text.What is the overall structure of the "Pros and Cons of Cryptocurrency" section of "The Future of Money"? The text uses comparison to show different opinions about the use of cryptocurrency. The text explains problems with cryptocurrency and solutions to make it more effective. It outlines the history of cryptocurrency and describes possible changes for its future use.It uses order of importance to highlight the most useful aspects of cryptocurrency. write an equation of the line below Read the paragraph.That should do it! said Dad. I found the problem with the motor and fixed it. I havent worked on cars for a while, but I think my mechanical skills are still sharp. Cross your fingers, David, and lets start her up!Which answer best replaces Cross your fingers, and conveys the same meaning?Wish me luck,Take your time,Hop on in,Give me a minute, Which of the following is true for a quadratic function with an imaginary root? What cognitive strategy is this? "I reckon they're after somebody," he reflected; "likely it's me." inferring predicting connecting questioning