if a chemist wants to make 1.3L of 0.25M solution of KOH by diluting a stock solution of 0.675 M KOH, how many milliliters of the stock solution would the chemist need to use?

Answers

Answer 1

Answer:

To solve this we use the equation,

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

.675 M x V1 = .25 M x 1.3 L

V1 = 0.48 L or 480 mL

Answer 2

Answer:

If a chemist wants to make 1.3 L of 0.25 M solution of KOH by diluting a stock solution of 0.675 M KOH, the chemist would need to use 480 mL of the stock solution.

Related Questions

What hypothesis did Miller-Urey test in their experiment?A. Organic molecules can form in a reducing atmosphere.B. Earth is a primordial soup.C. Organic molecules cannot survive in a reducing atmosphere.
Which description is NOT a characteristic of the nucleus of an atom? a. always contains the same amount of protons and neutrons b. contains uncharged particles c. positively charged d. accounts for most of the atom's mass
How many mL of 0.100 m NaHCO3 are needed to prepare 750.0ml of a 0.0500 m NAHCo3 solution
Based on its location on the periodic table, which metal is likely to be less reactive than both strontium and sodium?A. magnesium (Mg) B. barium (Ba) C. cesium (Cs) D.rubidium (Rb)
Which atomic model was proposed as a result of J. J. Thomson’s work?

Which of the following materials is damaged by acid rain

Answers

What are the options?

Which substance can not be broken down by a chemical change?A) methane B) propanal C) tungsten D) water

Answers

Answer:

The Answer is ELEMENT

Explanation:

okay the answer to your question is Tungsten

If 2.0 moles of a substance are dissolved in 2.0 liters of solution, then the molarity of this solution is:0.5 M

1.0 M

1.5 M

2.0 M

Answers

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

Molarity = 2.0 moles / 2.0 L

Molarity = 1.0 M

Answer:

1.0 M

Explanation:

Hello,

Molarity is a unit of concentration accounting for the amount of the moles of a solute per liter of solution as shown below:

$M=(n_(solute))/(V_(solution))$

In such a way, given the information on the statement, the resulting molarity turns out into:

$M=(2.0 mol)/(2.0 L)=1.0(mol)/(L)=1.0M$

Do not forget that mol per liters means molar units (M) as well.

Best regards.

Would the remains of a living thing have more or less carbon 14 in it after being buried for 10000 years? Why? Please make the answer no more than 5 sentences

Answers

Yes, because carbon-14 is radioactive and so decays over time. if it is buried, it cannot take up more carbon-14, so the overall c14 levels wil go down.

if a jar of honey sits for a long time, sugar may crystallize in the jar.describe two possible cause for this crystallization?

Answers

Answer:

Temperature and humidity

Explanation:

Crystallization occurs in super saturated solution. These are the solutions that have solute to solvent ratio of 2:1 or more. Typical honey is 70% sugar and 20% water (the solute concentration is too high).

Two things cause honey to crystallize.

Temperature
Humidity level

If temperature is lowered the rate of crystallization increases. This is because at low temperature the molecules of solvent come closer and the space between them reduces. This causes the additional solute molecules to be pushed up to form crystals.

Secondly, humidity also plays a key role. If the humidity reduces, the water molecules evaporates from honey into air. This increases the relative concentration of the solute inside the honey, which causes the honey to crystallize.

The two possible causes for crystallization in honey is 1. The condition of the room. (if the temperature keeps rising and dropping rapidly) 2. Crystallization rate also depends on the type of honey you keep in your cabinet. There are 300 different kinds of honey and each type crystalizes differently

During a flame test, ions of a specific metal are heated in the flame of agas burner. A characteristic color of light is emitted by these ions inthe flame when the electrons(1) gain energy as they return to lower energy levels(2) gain energy as they move to higher energy levels(3) emit energy as they return to lower energy levels(4) emit energy as they move to higher energy levels

Answers

The flames being emitted by the ions are as a result of ions 3. emitting energy as they return to lower energy levels.

When ions are heated:

They absorb energy
They are able to move around

As they move around, they expend some of that energy and lose it as a result thereby returning to lower energy levels. As that energy is lost, it comes across as light being emitted by the ions.

In conclusion, ions in the flame test emit light as they lose energy and return to a lower energy level.

Find out more at brainly.com/question/6357832.

Answer;

-Emit energy as they return to lower energy levels.

Explanation;

-A characteristic color of light is emitted by these ions in the flame when the electrons emit energy as they return to lower energy levels.

-The metal ions do absorb energy, and the electrons are boosted to higher energy levels, but they emit that energy as they fall to lower levels, and it is the photons of light they are emitting that can be seen.

Other Questions

How many moles of lithium oxide will form if 1.68 mol of lithium react?

Use two analogies to describe quantized change.

Pls help its due in a few minutes

Which compound has both ionic and covalent bonds?(1) CO2 (3) NaI(2) CH3OH (4) Na2CO3