you are asked to calibrate a 25 ml volumetric pipet. you determine that the temperature of your distilled water is exactly 23.5 degrees celsius. you carefully determined the mass of a clean dry beaker and found that it was 58.9557 g. you pulled water up to the mark and transferred this to the beaker and found that the new mass was 81.4781 g. what is the actual volume of the pipet? the density of water at 23.5 degrees celsius is 0.997403 g/ml.

Answers

Answer 1

The actual volume of the pipet 1.0037 is At about 4° Celsius, the density of fresh water reaches its maximum. The mass of water you pipetted is the difference in mass. Let's use the density to convert it to volume. The amount of water will be 1.0037 at 23.5 °C.

How can you figure out how much water a pipette will deliver?

The formula for figuring out how much water was dispensed by the pipette is V = w * Z, where w is the water's weight, Z is a conversion factor based on the water's density, and V is the computed volume.

What is the purpose of a volumetric pipet?

For a certain volume, volumetric pipettes are created to be extremely accurate. They can be utilized to move that amount of liquid that can be used to dilute or create a solution.

To know more about volumetric pipettes visit:-

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Related Questions

How many particles are in a 151 g sample of Li2O?

Answers

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

= 30.52 × 10^23

= 3.052 × 10^24 particles.

How many grams are in 5 mols of KOH​

Answers

Answer:

0.08911760029829444

Explanation:

hop that this what you wanted

Earth is currently 150 million km away from the Sun. If Earth was 200 million km away from the Sun, why would it no longer be able to support life?

Answers

Answer:

The temperature would be too cold

Explanation:

PLEASEEEEE ANSWERRR??

Answers

I believe it is Good
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Convert 16.8 L of nitrogen monoxide gas at STP to grams .
1.What is the coefficient of the scientific notation answer ?
2.What is the exponent of the scientific notation answer ? 3.How many significant figures are there in the answer?
4.What is the right most significant figure in the answer ?

Convert 12.5 grams of fluorine gas at STP to L.
1.What is the coefficient of the scientific notation answer? 2.What is the exponent of the scientific notation answer? 3.How many significant figures are there in the answer ?
4.What is the right most significant figure in the answer?

Answers

Answer:

See explanation

Explanation:

1 mole of a gas occupies 22.4 L

x moles occupies 16.8 L

x = 1 mole *  16.8 L/22.4 L

x = 0.75 moles

number of moles = mass/molar mass

mass =  number of moles  * molar mass

mass =  0.75 moles * 30.01 g/mol = 22.5075 g = 2.25 * 10^1 g

the coefficient of the scientific notation answer = 2.25

the exponent of the scientific notation answer = 1

significant figures are there in the answer = 6

the right most significant figure in the answer = 3

2.

number of moles = 12.5g/38g/mol = 0.3289 moles

1 mole occupies 22.4 L

0.3289 moles occupies 0.3289 moles * 22.4 L/1 mole

= 7.36736 L = 7.36736 * 10^0 L= 7.37 * 10^0 L

the coefficient of the scientific notation answer =7.37

the exponent of the scientific notation answer = 0

significant figures are there in the answer = 6

the right most significant figure in the answer= 3

What does the reaction rate measure?
O A. The collisions per second
O B. The speed of the reaction
C. The reaction activation energy
O D. The moles per liter of product

Answers

b
hope that helps :)
brainlyest pls

Answer:

The speed of the reaction

Explanation:

I just took the test and got it right... i hope this helps u :)

What causes the difference in density of matter?

Answers

Answer:

because it has more space

Explanation:

density have many pressure

The more mass an object contains in a given space, the more dense it is. It is important to remember, though, that this relationship is not just about how closely packed together the atoms of an element or the molecules of a compound are. Density is also affected by the atomic mass of an element or compound.

2 uniones iónicas y 2 covalentes, realizando las estructuras de Lewis correspondiente y averiguar la función del compuesto armado en la vida cotidiana.

Answers

Answer:

Cloruro de sodio y fluoruro de sodio.

Dióxido de carbono y monóxido de hidrógeno.

Explicación:

El cloruro de sodio y el fluoruro de sodio son los compuestos que tienen enlaces iónicos. Estos compuestos iónicos se utilizan para diferentes actividades de nuestra vida diaria. El cloruro de sodio se usa para cocinar y el fluoruro de sodio se usa en la pasta de dientes para limpiar nuestros dientes. El dióxido de carbono y el monóxido de hidrógeno son compuestos que tienen enlaces covalentes. El dióxido de carbono se usa en refrescos / refrescos y algunos otros líquidos que se pueden usar en la vida diaria. El monóxido de hidrógeno es el agua pura que bebemos todos los días en nuestra vida diaria y es muy importante para nuestra supervivencia.

3. An unknown solution has a pH of 10. Based on the pH scale, the solution can be described as

Answers

Explanation:

For example, pH 10 is ten times more alkaline than pH 9 and 100 times (10 times 10) more alkaline than pH 8. Pure water is neutral. But when chemicals are mixed with water, the mixture can become either acidic or basic.

How much heat is required to raise the temperature of 18 grams of liquid water by 25 C?

Answers

Since the molecular weight of water is about 18 g/mol, you have about 1 mol of water. So, now we know that it takes approximately 46.2 kJ of heat energy to warm 18.02g of water from 25C to 100C and then to vaporize it into steam. Hopefully this helped!

Explanation:

Shelton measures a temperature of a solution to be 20O degrees C and stirs 5 grams of a substance into the solution. this substance disappears and 10 minutes later the substance of the solution is 80O degrees C.
based on his observation, can Shelton conclude a chemical reaction has occurred?

A) yes because the substance dissolved in the solution

B) no because the volume of the solution did not change

C) no because there are no color changing solution

D) yes because heat was produced

Answers

Answer:

did u ever get an answer??

Explanation:

Answer:

The answer is C. Yes, because heat was produced

PLEASE HELP ME ASAP!!!!!!! NO LINKSSSS

Answers

Answer: C

Explanation: everything else seems like it is obeying the laws of gravity except wind blowing sand into the air. hope this helps.

C
It is being blown into the air, rather than the ground

Question 4
1 pts
24) Which statement best describes what happens to the particles in ice as it melts?
A) They lock into place.
B) They move more rapidly.
C) They lose some of their mars.
D) They become electrically charged.

Answers

the answer is B im sure

The figure shows a nutrition label. How much energy does this food contain?

Answers

Answer:

i need help with that too.

Explanation:

how does a drought (lack of water) affect an ecosystem?

Answers

When a drought occurs, their food supply can shrink and their habitat can be damaged. Lack of food and drinking water for wild animals. Increase in disease in wild animals, because of reduced food and water supplies. Migration of wildlife.

Question 1:
How many atoms are in 25.00 g of Li.
A. 2.393 x 10^24 atoms of Li
B. 1.333 x 10^23 atoms of Li
C. 2.16 x 10^26 atoms of Li
D. 2.17 x 10^24 atoms of Li
Question 2:
How many grams is 2.393 x 10^24 atoms of CI
A. 70.45 g CI
B. 140.9 g CI
C. 140.9 mole CI
D. 70.45 mole CI
Please try to answer both questions! Thanks for all the effort :)

Answers

Answer:

1.a

2.c

hope helps

Explanation:

mark

pa

Can you Help me please...

Answers

Answer:

590J or 590.4J :)

Explanation:

2.46 x 6 (35-29= 6) x 40 = 590.4J

Nearest whole number : 590J

The atomic number of a made up element is 413. What else would you know about the element with this information?

Answers

Number of protons in an atom

please help on this question it’s the only one i can’t do !!

Answers

Answer:

70%of 2000 = 1400

2000 tonnes of hematite contains 1400 tonnes iron oxide .

1400 tonnes of fe2O3

fe2O3 have molar mass 159.69

calculate moles = given mass/molar mass

moles = 1400000000/159.69

moles = 8766986

one mole contains = 112 g of fe

so 8766986 moles will contain = 112×8766986

= 981,902,432 grams of ferrous

which is nothing but equal to 981.90 tonnes of iron!!

Begin walking at a brisk pace by pushing off of your heels onto your toes. After you feel warmed up (after 1 or 2 minutes), begin jogging at a slow pace (for 2 minutes). Next, run as fast as you can for 2 minutes. Slow down to a jog for 2 minutes. Slow down to a brisk walk for 2 minutes. Describes what? Question 1 options: Progressive walk Progressive Run Running Walking

Answers

Answer:

The answer is Progressive Run

Explanation:

I took the test and got it right <3

Brisk walking is the type of exercise that includes walking 3 miles in an hour at a faster speed than strolling. The situation describes the progressive run.

What is a progressive run?

A progressive run is a type of aerobic and anaerobic exercise that benefits training and race management techniques.

The progressive run technique includes the easy and relaxing jog with a gradually increased running pace. This practice is used to overcome the second-half slow run issues.

Therefore, the situation depicts option B. progressive run.

Learn more about the progressive run here:

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Why do silver and copper have similar properties?
(7th Grade science)

Answers

Answer:

They are both listed under group 11 on the periodic table and both are highly conductive of electricity

Explanation:

HOPE THIS HELPS ^^

Also, both are metals which means both are very conductive, shiny, and mailable

See if you can think of a way to prove that it is the oxygen in air, not nitrogen, that causes rusting.

Answers

Answer:

rusting occur in oxygen and water coz when you put a nail into the water and you leave it three days you will the nail become brownish and that is due to oxygen and water

What is the formation of gas is an example of?​

Answers

Answer:

The formation of a gas is a clue to chemical changes. The bubbles of gas that you observed form when an antacid is dropped into water is an example of change. ... As wood burns, it turns into a pile of ashes and gases that rise into air.

Explanation:

Convert 3.00 * 10 ^ 26 molecules of carbon dioxide gas at STP to L.
1.What is the coefficient of the scientific notation answer? 2.What is the exponent of the scientific notation answer? 3.How many significant figures are there in the answer ?
4.What is the right most significant figure in the answer?

Answers

Answer: 1. The coefficient is 1.12

2. The exponent is 4

3. There are 3 significant digits

4. The rightmost significant figure is 2.

Explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as [tex]5.0\times 10^3[/tex]

According to avogadro's law, 1 mole of every gas contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles and occupy 22.4 L at STP.

[tex]6.023\times 10^{23}[/tex] molecules of [tex]CO_2[/tex] occupy = 22.4 L at STP.

Thus [tex]3.00\times 10^{26}[/tex] molecules of [tex]CO_2[/tex] occupy = [tex]\frac{22.4}{6.023\times 10^{23}}\times 3.00\times 10^{26}=11.2\times 10^3 L[/tex] at STP.

Scientific notation = [tex]1.12\times 10^4L[/tex]

The coefficient is 1.12

The exponent is 4

There are 3 significant digits

The rightmost significant figure is 2.

Y’all know I’m adopted yup and I jus finally got the parents I’ve wanted my whole life❤️ thank u all besties

Answers

I'm glad for you! Best of luck in life tbh

If 3.25 mol of Ar occupies 100. L at a particular temp and pressure, what volume does
14.15 mol of Ar occupy under same condition?

Answers

Answer:

435.38 L

Explanation:

From the question,

Applying ideal gas equation,

PV = nRT................... Equation 1

Where P = Pressure, V = Volume, n = number of moles, R = molar gas constant, T = Temperature.

Since Temperature and Pressure were constant,

V ∝ n

V/n = V'/n'.................... Equation 2

Where V and V'  = the initial and final Volume of Ar respectively, n and n'  = the initial and final moles of Ar respectively

make V' the subject of the equation

V' = Vn'/n............... Equation 3

Given: V = 100 L, n = 3.25 mol, n' = 14.15

Substitute into equation 3

V' = (100×14.14)/3.25

V' = 435.38 L

4.15 mole of Ar gas occupy the volume of 435.38 L under same condition.

What is ideal gas equation?

Ideal gas equation for any gas at standard condition is define as:

PV = nRT, where

P = Pressure,

V = Volume,

n = number of moles,

R = molar gas constant,

T = Temperature.

In the question it is given that pressure and temperature for the expansion is constant, so ideal gas equation becomes:

V/n = V'/n', where

V = initial volume of Ar = 100 L (given)

V' = final Volume of Ar = to find?

n = initial moles of Ar = 3.25 mole (given)

n' = final moles of Ar = 14.15 mole (given)

Now we calculate the final volume as:

V' = (100×14.14)/3.25 = 435.38 L

Hence, 435.38 L is the occupied volume.

To know more about ideal gas equation, visit the below link:

https://brainly.com/question/20348074

What type of circuit has a broken path that does NOT let current flow through it?
A : Closed circuit
B: Open circut
C : Toggle
D : Switch

Answers

Answer:

B

Explanation:

Certain minerals exclude lead but not uranium from their crystal structure, so when the minerals form they have no lead, only uranium. As time goes on, the uranium decays to lead, so measuring the ratio of lead atoms to uranium atoms allows investigators to determine the ages of the minerals. If a sample of a mineral contains 3 atoms of 207Pb207Pb for every 1 atom of 235U235U, how many years ago was it formed

Answers

Answer:

The answer is "[tex]1.4 \ \bold{ billion-years}[/tex]".

Explanation:

Using formula:

[tex]\to N_{Now} = N_{orige}e^{\lambda t} \\\\[/tex]

[tex]\to[/tex] 1 U atom produces 1 Pb atom after decay.

[tex]\to[/tex] U's original numbers are now the sum of U counts and Pb counts.

 [tex]\to N_U=(N_U+N_{pb})e^{\lambda Ut}[/tex]

[tex]\to 1 = (1+3) \ exp[(\frac{-\ln(2)}{t_{(half)}} \times t ]\\\\\to t = [\frac{\ln(4)}{\ln(2)}] \times t_{(half)}[/tex]

      [tex]= 14 \times 10^8 \ \ years\\\\=1.4 \ billion \ \ years[/tex]

what do a bald eagle, a komodo dragon, and a lizard have in common

Answers

Answer:

All of them derive from a common ancestor. They each share something in their DNA that ties into their past selves, which were more closely related. As they evolved, they became more and more distant, but we can still trace them back to the olden days.

Also they all have scales.

Hope this was at least semi-useful.

PLSSSS ANSWERRRRRR?????

Answers

D
The lines are closer together
Please give me Brainliest
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