If water is added to 145 mL of a 0.55 M KOH solution until the volume is 250 mL, what will the molarity of the diluted solution be?

Answers

Answer 1

Answer:

0.319 M

Explanation:

M1V1 = M2V2

M1 = 0.55M

V1=145 mL = 0.145 L

V2 = 250mL = 0.250L

M2 = M1V1/V2=0.55x0.145/0.250 = 0.319 M


Related Questions

which one of the following forces is a contact force force of gravity or force of friction​

Answers

Answer:

a force of friction would be like something moving that suddenly stops because of the texture of another object while a force of gravity would be something falling and gravity pulling it down :) hope this helps

Explanation:

What is the difference between cleavage and fracture

Answers

The difference between the two is, cleavage is the property of a mineral that allows it to break smoothly along specific internal planes (called cleavage planes) when the mineral is struck sharply with a hammer. Fracture is the property of a mineral breaking in a more or less random pattern with no smooth planar surfaces.

Hope this helps!!
Please give brainliest if this is correct!

hlo ;) lol im banned and my name is kimboslicer it is so sad my accout is bloked 4 23:12

Answers

Answer:

lol im sorry man

Explanation:

Answer:

My old acc got banned

Explanation:

HELP ASAP PLEASE
Place the correct figure to represent the reaction below. (Remember that energy is rising on the vertical (y) axis and the reaction progress is on the horizontal (x) axis.)

C12H22O11 + 11 H2SO4 12 C + 11 H2SO4 + 11 H2O

Answers

Answer:

It is the bottom left one

Explanation:

Just did it in OW

True or false: All molecules or atoms in a substance have the same amount of kinetic energy at a given temperature?

Answers

Answer:

false

Explanation:

Difference in neutrons in a molecule means that molecules have different masses. They will always have different energies

another example: water has less energy as a liquid than as a gas

Sandban
Grade 8 Science Winter Interim
Question
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Signed in as NOTRE
Q Review Finish Test
Question
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Normal
ABC
Question 3
Twoiron balls are dropped from a height of 100 meters One Dal Frame A) is not moving when it is dropped and the second ball is moving horizontally at a constant velocity of 10 m/s when it is dropped (Frame B). The balls follow the
trajectories indicated by the arrows and fall for 4,52 s before hitting the ground. (Ignore air resistance)
Frame A
Frame B
1kg
-10%
10kg

Answers

Ahhhhhhhhhhhh Ask some one else

A weight of 8.7 N is attached to a spring that has a spring constant of 190 N/m. How much will the spring stretch?

Answers

Given:
Fs=8.7N
K=190N/m
Unkown:
X=?
Equation:
Fs=Kx
8.7N=(190N/m)x
X=4.6*10power of-2m
The spring will stretch "4.6×10⁻2 m".

Given values are:

Force, Fs = 8.7 NSpring constant, k = 190 N/m

As we know the relation,

→ [tex]Fs = K\times x[/tex]

or,

→   [tex]x = \frac{Fs}{k}[/tex]

By putting the values, we get

        [tex]= \frac{8.7}{190}[/tex]

        [tex]= 4.6\times 10^{-2} \ m[/tex]

Thus the response above is right.

Learn more about spring constant here:

https://brainly.com/question/15404289

Which equation has x = 5 as the solution?

2x = 5
2x = 5

x - 10 = 15
x - 10 = 15

x + 15 =10
x + 15 =10

2x = 10

Answers

Answer:

x-10 should be the answer

Covalent bonds form due to the attraction between _____.

a positive atomic nucleus and a negative one

the nuclei of two atoms

the electrons of two atoms

the electrons of one atom and the nucleus of another

Answers

Answer:

the electron of one atom and the nucleus of another

PLS HELP ASAP I WILL GIVE BRAINLYY

Answers

the answer is 2Mn + 6HI → 3H2 + 2MnI3 so the first one

how many molecules are present in a sample of carbon dioxide, CO2 with a mass of 168.2g?​

Answers

Answer:

2.3 X 10^24 atoms CO2

Explanation:

Answer:

2.30 x10²⁴ molecules CO2

Explanation:

Convert mass of CO2 to moles

Convert moles of CO2 to molecules using Avogadro's number.

168.2 g CO2 x 1 mole CO2 / 44 g CO2 x 6.022 x10²³ molecules CO2 / 1 mole CO2

= 2.30 x10²⁴ molecules CO2

Suppose you a 2 of 10M solution and poured 4 liters of water into it. What would be the new concentration of the solution?

Answers

Explanation:

tgfghhuigyhjgguigutyjiouuluuirtugyirechjg

Answer:

3.33M

Explanation:

M1V1=M2V2

M1 = 10M

V1=2L

V2=6L

M2 = M1V1/V2 = 10x 2/6 = 3.33 M

3.
Plant A
Plant B
Is tall
Is short
Has many large deep roots Has many small short roots
Has many small leaves
Has many large leaves
Comes in many different colors comes in only one color
The table shows some observations made by a group of students studying plants they will use
in a flower garden. Which conclusion is best supported by these observations?

Answers

Plant A is the answer

How do you find the scientific notation of a Avogadro's number??

Answers

Answer: ummmmmm hmmmmm

Explanation:

Which reactions are oxidation-reduction reactions? Check all that apply.

(1) 2 upper N a plus upper C l subscript 2 right arrow 2 upper N a upper C l.

(2) Upper P b (upper O upper H) subscript 2 right arrow upper P b upper O plus upper H subscript 2 upper O.

(3)Upper C u plus 2 upper A g upper N upper O subscript 3 right arrow upper C u (upper N upper O subscript 3)subscript 2 plus 2 upper A g.

(4)Upper Z n upper B r subscript 2 plus 2 upper A g upper N upper O subscript 3 right arrow 2 upper A g upper B r plus upper Z n (upper N upper O subscript 3) subscript 2.

(5)Upper C upper H subscript 4 plus 2 upper O subscript 2 right arrow upper C upper O subscript 2 plus upper H subscript 2 upper O.

answer- 1,3, & 5
explanation- I did it on edge 2021

Answers

Answer:

the 1st 3rd and 5th ones

EDGE 2021

Explanation:

Answer:

A

C

E

Explanation:

What is the mass of chlorine in 3.9 x 1019 molecules of Cl2?

Answers

Explanation:

A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength λ of the radiation by

E=hf=hcλ(energy of a photon)E=hf=hcλ(energy of a photon),

where E is the energy of a single photon and c is the speed of light. When working with small systems, energy in eV is often useful. Note that Planck’s constant in these units is h = 4.14 × 10−15 eV · s.

Since many wavelengths are stated in nanometers (nm), it is also useful to know that hc = 1240 eV · nm.

These will make many calculations a little easier.

All EM radiation is composed of photons. Figure 1 shows various divisions of the EM spectrum plotted against wavelength, frequency, and photon energy. Previously in this book, photon characteristics were alluded to in the discussion of some of the characteristics of UV, x rays, and γ rays, the first of which start with frequencies just above violet in the visible spectrum. It was noted that these types of EM radiation have characteristics much different than visible light. We can now see that such properties arise because photon energy is larger at high frequencies.

If 0.05 mol of I2 were actually produced in a reaction starting with 15 grams of CO what is the percent yield of I2

Answers

Answer:

6.2

Explanation:

I AM SMOooOooOooORTno but really trust the process

Silver nitrate reacts with calcium chloride as
shown.
2 AgNO3 + CaCl2 → 2 AgCl + Ca(NO3)2
How many grams of CaCl2 would be required to completely react with 420 mL of
0.506 M AgNO3 solution?
Answer in units of grams.

Answers

Answer:

11.8g of CaCl₂ would be required

Explanation:

To solve this question we need to find the moles of AgNO₃ in the solution. Thus, and using the chemical reaction we can find the moles of CaCl₂ required for a complete reaction and its mass as follows:

Moles AgNO₃:

420mL = 0.420L * (0.506mol / L) = 0.213 moles AgNO₃

Moles CaCl₂:

Based on the chemical reaction, 2 moles of AgNO₃ react per mole of CaCl₂.

The moles of CaCl₂ that will react are:

0.213 moles AgNO₃ * (1mol CaCl₂ / 2 mol AgNO₃) = 0.106 moles CaCl₂

Mass CaCl₂ -Molar mass: 110.98g/mol-

0.106 moles CaCl₂ * (110.98g / mol) =

11.8g of CaCl₂ would be required

Which of the greenhouse gases are carbon compounds?

Answers

Answer:

Methane (CH4),Carbondioxide green house gases are carbon compounds

Carbon dioxide (CO2) and methane (CH4) are two powerful greenhouse gases produced by the carbon cycle.

True or False: The amount of water has and will always remain about the same?

Answers

Answer:

In the world? I would say no, but at the same time there are a lot of variables to consider in this. But I'd say no. Just my opinion.

Explanation

Answer:

False the amount of water on earth has decreased over the years

Explanation:

The process of water changing from a liquid to solid is called?

Answers

It must be freezing or condensation

Answer:

freezing

Explanation:

When a solid reaches the temperature of its melting point, it can become a liquid. For water, the temperature needs to be a little over zero degrees Celsius (0oC) for you to melt. ... The reverse of the melting process is called freezing. Liquid water freezes and becomes solid ice when the molecules lose energy.

hope it becomes helpful to you ☺️☺️

good luck

Which has the larger change hydration in each pair of a)Na+ Or cs+ b)Sr+2 or Rb+ c)Na+ or Cl- d) O-2 or F- e)OH- or SH-

Answers

Answer:

See explanation

Explanation:

The size of the hydration enthalpy of a system depends on the attraction between the ions and the water molecules. Stronger attractions exist between water and smaller ions. The smaller the ion, the higher the hydration enthalpy is.

In the first pair, Na+ is smaller than Cs+ hence Na+ has a larger change in hydration enthalpy.

In the second pair, Sr2+ is smaller than Rb+ hence Sr2+ has a larger change in hydration enthalpy.

In the third pair, Na+ is smaller than Cl- hence Na+ has a larger change in hydration energy.

F- is smaller than O2- hence F- has a larger change in hydration energy.

OH- is smaller than the SH- hence the OH- has a larger change in hydration energy.

as insoluble ...... can be separated from a liquid by filtration on centrifugation

Answers

Answer:

by centrifugation

Explanation:

in such cases filtration cannot be used for separation

help plsssssssssssssssssssssss

Answers

Answer:

b chemical - thermal and mechanical

Explanation:

energy stored in food in is chemical, so it would only make sense of b) was the answer

High-speed winds transfer more energy to the ocean’s surface, creating bigger waves.



Question 10 options:
True
False

Answers

Answer:

I think that would be true. The faster the wind, the longer it blows, or the farther it can blow uninterrupted, the bigger the waves. Therefore, a wave's size depends on wind speed, wind duration, and the area over which the wind is blowing

Answer: True.

Explanation: Yes, waves get energy from the wind through friction, so you see those waves get bigger each time. The longer the winds blows, the more friction, and energy it's getting, meaning better, and deadly waves. The wind can sometimes cause tsunamis if the its blowing too hard.

if carbon dioxide is broken down. what element will it give?​

Answers

Carbon dioxide is CO2...if it’s broken down it will be C and O which are carbon and oxygen

A carrier *
Organism that transmits disease through blood
O Person or animal that is infected with the disease but is asymptomatic
O Used to treat a bacterial infection, cannot be used to prevent an infection
Used to prevent a viral infection, must be given before the person is infected

Answers

Answer: carrier, is a person or other organism that has inherited a recessive allele for a genetic trait or mutation but usually does not display that trait or show symptoms of the disease. Carriers are, however, able to pass the allele onto their offspring, who may then express the genetic trait.

i think it is Person or animal that is infected with the disease but is asymptomatic

Explanation:

I’ll really appreciate it if you help me on this one .

Answers

I would observe lots of cool tones including gray and blue. There are thick and fluffy clouds and and the water looks clean and clear.

Answer:

Beautiful, scary, a different experience, full of imaginations.

A 30.0 mL aliquot of 0.0250 M HCl solution is titrated using 0.0500 M NaOH.

A) determine the volume of NaOH necessary and the pH at the equivalence point.

B) Determine the pH of the solution after 160.00 mL base is added.

Answers

Answer:

xdyd jdkdudktvko?ñhixiskrsjdjuxguxhicjovyx bhfoggu vohudixiyd siydyoxoyxyoxyixhoxiyxys ztiziyxyoxoyzyizitztixtx no se

hkgkfu

Explanation:

iyxyx yo gkxtuztizyidtiztizigxigxkhxhk. jvkgxitxoyfihciyxyixihxoyxyodyidtistusdtidti lo siento

what gives off greenhouse gases

Answers

Emitted primarily through the burning of fossil fuels (oil, natural gas, and coal), solid waste, and trees and wood products. Changes in land use also play a role. Deforestation and soil degradation add carbon dioxide to the atmosphere, while forest regrowth takes it out of the atmosphere

Answer:

the combustion of fossil fuels, such as coal, oil, and natural gas, to produce electricity.

Other Questions
Talia has a daily budget of $94 for a car rental. Write and solve an inequality to find the greatest distance Talia can drive each day while staying in her budget 18 less than the quotient of a number and -5 is no less than 31 Helpppp PLZ 20 POINTS!!!!! More then one answer Write a recursive rule for the sequence. The sequence may be arithmetic, geometric or neither: 66,33,16.5,8.25,... this is 1-12 theres 23 in total Lewis dot diagram for the Cs1+ ion Factor the expression using the GCF 48+16 2y^3-18y^2+9y-81Factor the polynomial completely Drag each tile to the correct location on the diagram.Determine whether the following descriptions belong to Montesquieu, Locke, or both. (PLS HELP ASAP)Which of the following describes a political lobby? A. the waiting area outside the voting chamber at the U.S. Capitol B. a committee of educators responsible for making recommendations to improve the political system C. a group engaged in trying to influence legislators or other public officials in favor of a specific cause D. a group that formulates political and policy agendas selects candidates and conducts election campaigns PLEASE HELP!!!!!!!!!!!!!!!! 2. If it took 6 hours to climb72 feet, then at that rate, howmany feet could be climbedin 24 hours? Show your work. 3 What is the equation of a line that passes through the point(0, -3) and has a slope of 2? WILL MARK BRAINLIEST Simplify this expression (3x + 9 2x) If you began a reaction with the following ions in solution, what would be the net ionic equation?Na+, PO43, Fe2+, and NO3 The height, h, in feet of a golf ball above the ground after being hit into the air is given by the equation, h = -16t 2 + 64t, where t is the number of seconds elapsed since the ball was hit. How many seconds does it take for the golf ball to hit the ground?It will take --------- seconds for the ball to hit the ground?? Plz help!!! I need it right now Stallion Corporation sold $190,000 par value, 10-year first mortgage bonds to Pony Corporation on January 1, 20X5. The bonds, which bear a nominal interest rate of 10 percent, pay interest semiannually on January 1 and July 1. The entry to record interest income by Pony Corporation on December 31, 20X7, was as follows: Note: Assume using straight-line amortization of bond discount or premium. General Journal Debit Credit Interest Receivable 9,500 Interest Income 9,025Investment in Stallion Corporation Bonds 475 Pony Corporation owns 65 percent of the voting stock of Stallion Corporation, and consolidated statements are prepared on December 31, 20X7. Required: A. What was the original purchase price of the bonds to Stallion Corporation?B. What is the balance in Pony's bond investment account on December 31, 20X7?C. Prepare the worksheet elimination entry or entries needed to remove the effects of the intercompany ownership of bonds in preparing consolidated financial statements for 20x7. Record the entry to eliminate the effects of the intercompany ownership in the bonds. Record the entry to eliminate the intercompany interest receivables/payables. Ammonia can be made by reaction of water with magnesium nitride as shown by the following unbalanced equation: Mg3N2(s) + H2O(l) Mg(OH)2(s) + NH3(g) If this process is 71% efficient, what mass of ammonia can be prepared from 24.5 kg magnesium nitride? Which of the following is a solution to the inequality below?5 < q/19