What is the molarity of a solution prepared by dissolving 20.0 grams of naoh in sufficient water to make a solution with a total volume of 2.40 liters? 0.120 m naoh 0.208 m naoh 0.416 m naoh 0.833 m naoh

Answer:

The two men can arrange a position such as the center of gravity must be nearer the stronger man and the weaker man must be away from the center of gravity of the wooden pole.

In plain language, the stronger man must be near the center while the weaker man must be away from the center of the wooden pole.

Explanation:

I am sachhyam lama

from nepal

my teacher wrote this answer thats why I wrote the answer

When any chemical equation is not balanced then that is known as skeletal chemical equation. We need to balance it because as we know that mass can neither be created nor be distroyed and also the number of atoms on the reactant side should always be equal to the compounds on the product side .

Answer:

2H+(aq) is the net ionic equation.

Answer:

Relied on the use of power driven machinery

Explanation:

Its because the machines would increase the mass productivity of goods

Answer: Handwashing. It is estimated that washing hands with soap and water could reduce diarrheal disease-associated deaths by up to 50% 1. Researchers in London estimate that if everyone routinely washed their hands, a million deaths a year could be prevented 2.

Explanation:

Answer:

Covalent bonds

Explanation:

they go together with water molecules

Answer:

D. They are made of repeating subunits.

Explanation:

The first column represting polymers such as DNA, cellulose, nylon, hair are labelled with cells, plant material, synthetic material, animal material and They are made of repeating subunits.

Not all the entries in the first column come from living things as nylon comes from synthetic material (man-made). But all four (DNA, cellulose, nylon, hair) are conists of repeating unit.

DNA made up of nucleotides, cellulose is made up of rpeating units of monomer glucose, nylone is made of repeating unit of two monomers  hexamethylene diamine and adipic acid, and hair is made of repeating unit of  protein called keratin.

Hence, the correct answer is "D. They are made of repeating subunits."

Answer:

They are made of repeating subunits....(D)

Explanation:

hope this helps. also the person above me is correct

Answer:  kilogram

Explanation:

meter - Length

kilogram - mass

pound - also mass but NOT the standard unit!

liter - Volume

Answer:

it because of cold weather

The complete statement is "CH3CHOHCH3 is not an electrolyte in solution." This is further explained below.

Generally,a liquid or gel containing ions that may be broken down by electrolysis, such as the kind used in batteries.

In conclusion, "CH3CHOHCH3 is not an electrolyte in solution," is the whole sentence.

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The statement "they cannot be hydrolyzed" about triacylglycerols is NOT true.

Triacylglycerols can be hydrolyzed, in fact. Triacylglycerols are enzymatically broken down into glycerol and specific fatty acids through a process known as lipolysis. Lipases, which cleave the ester bonds between glycerol and fatty acids, aid in hydrolysis.

Once hydrolyzed, the free fatty acids can be utilized in other metabolic processes or to produce energy. Triacylglycerols have a crucial role as an energy storage form in organisms, offering an easily accessible energy source when needed. This role is facilitated by their capacity to undergo hydrolysis.

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The complete question is:

Which of the following statements about triacylglycerols is NOT true.

they are an ester of glycerol and three fatty acids.

triacylglycerols that are oils contain mostly unsaturated fatty acids.

they function as a storage form of lipids.

they cannot be hydrolyzed.

Answer:

#4: 0.89 mol/L #5: 0.36 mol

Explanation:

#4: Morality is Moles/ Liters

So take 3.2 mols ÷ 3.6 L = 0.8888... since there are 2 sig figs in the question the answer would round to 0.89 mol/L

#5: to find the number of moles needed, you take the mol/L and multiply that by the volume.

0.89 mol/L ×0.400L = 0.356 mols. the liters cancel out. Since 0.89 has the least number of sig figs your final answer should have 2. which it 0.36 mols.

I hope this helps, good luck!

Answer:

walk to work, carpool to work, drive alone to work

Explanation:

Magnetic Resonance Spectroscopy (MRS): MRS is a non-invasive imaging technique that allows for the measurement of chemical concentrations in the brain. It uses magnetic fields and radio waves to detect the signals emitted by different chemicals in the brain.

Gamma-Aminobutyric Acid (GABA): GABA is an important neurotransmitter in the brain that helps regulate neuronal activity. It is involved in the inhibition of neuronal signals, which is crucial for maintaining a balance in brain function.
Bipolar Disorder: Bipolar disorder is a mental illness characterized by extreme shifts in mood, energy, and activity levels.

It is believed to be caused by a combination of genetic, environmental, and neurochemical factors.
Measurement of GABA Concentrations: The MRS technique allows researchers and clinicians to measure the concentration of GABA in the brain. By comparing the GABA levels in patients with bipolar disorder to those without the disorder, scientists

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Answer:

1) Yes the density does affect it's melting rate.

Explanation:

Simply because the more rock the more time. For instance an ice cube that is empty inside ( has less density ) will take less to melt. Verses an ice cube that is ice to its inner core ( has more density ) will take more time to melt in the same temperature as the first ice cube.

Answer:

Both

compounds in left hand side of the equation is called reactants.

compounds in right hand side of the equation is called products.

so ans is both water and carbon di oxide

Explanation:

Answer:

Explanation:

The number of molecules can be found by using the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 1.5 × 6.02 × 10²³

We have the final answer as

Hope this helps you

After 20 minutes, there would be 0.75 kilograms of salt in the tank.

1. Let's derive the differential equation that y(t) satisfies. The rate at which salt is added to the tank is given by the concentration of the solution (0.5 kg/L) multiplied by the rate at which the solution is added (6 L/min). The rate at which salt is drained from the tank is given by the concentration of salt in the tank (y(t) kg/L) multiplied by the rate at which the solution is drained (4 L/min). Therefore, the differential equation is:

dy/dt = (0.5 kg/L * 6 L/min) - (y(t) kg/L * 4 L/min)

Simplifying further, we have:

dy/dt = 3 - 4y(t)

2. To find the amount of salt in the tank after 20 minutes, we can solve the differential equation. One approach is to find the particular solution by assuming y(t) takes the form of a constant, y. Substituting this into the differential equation, we have:

dy/dt = 3 - 4y

Setting dy/dt to zero (since y is constant), we can solve for y:

0 = 3 - 4y

4y = 3

y = 3/4

y = 0.75 kg

Therefore, after 20 minutes, there would be 0.75 kilograms of salt in the tank.

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Answer:

the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.

Explanation:

if you need a definition of a word, you can look in a dictionary as well for future reference

Answer:

Temperature means the hotness or coldness of anything.

Explanation:

The exact definition is: "The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch."

Answer:

The reason is carbon's ability to form stable bonds with many elements, including itself. 

Explanation:

This property allows carbon to form a huge variety of very large and complex molecules. In fact, there are nearly 10 million carbon-based compounds in living things!

Answer:

Explanation:

The reason is that carbon is able to form stable bonds with many elements, including itself, which allows carbon to form a huge variety of very large and complex molecules.

Answer: 50%

Explanation:

The best we get from the moon is a full moon, which is just half of the moon shining from the earth while the other half is in complete darkness.

Answer: Should be A)

Explanation:

the size of planets effects the amount of gravitational force each planet has, like jupiter, it has the most gravity.

Answer:

59.46 g

Explanation:

To answer this question, the molecular weight of ammonium sulfate must be computed.  To accomplish this, the weights of the individual elements must be noted.
N=14.01\(\frac{g}{mol}\)

H=1.01\(\frac{g}{mol}\)

S=32.07\(\frac{g}{mol}\)

O=16.00\(\frac{g}{mol}\)

To compute the molecular weight:

\(2[14.01\frac{g}{mol}+4(1.01\frac{g}{mol})]+32.07\frac{g}{mol}+4(16.00\frac{g}{mol})=132.14\frac{g}{mol}\)

To calculate the mass:

\(0.45 mol(\frac{132.14g}{1mol})=59.463g\)

Answer:

There are three types of periods in the modern periodic table: very short periods, short periods, and long periods.

The difference between very short periods and short periods is the number of elements they contain. Very short periods only contain two elements, while short periods contain eight elements. The difference between short periods and long periods is the number of orbitals that can be occupied by electrons in each period. Short periods can only have electrons in the s- and p-orbitals, while long periods can also have electrons in the d-orbital.

Here is a table summarizing the differences between very short periods, short periods, and long periods:

Answer:

what wrong

Explanation:

Answer:

That is a nice picture i love it plus if you need help just ask we can help :3

Explanation:

The mass of 8.42 x \(10^{22\) atoms of sulfur is approximately 4.482 grams.

To calculate the mass of 8.42 x\(10^{22\) atoms of sulfur, we need to use the concept of molar mass. The molar mass of an element is the mass of one mole of that element, and it is expressed in grams per mole (g/mol).

1. Find the molar mass of sulfur:
The atomic mass of sulfur is 32.06 g/mol. This means that one mole of sulfur atoms has a mass of 32.06 grams.

2. Convert the given number of atoms to moles:
To do this, divide the given number of atoms by Avogadro's number, which is approximately 6.022 x\(10^{23\) atoms/mol.

8.42 x \(10^{22\) atoms ÷ (6.022 x\(10^{23\) atoms/mol) = 0.1399 mol (rounded to four decimal places)

3. Calculate the mass:
Now, we can use the molar mass to find the mass of the given number of moles.

0.1399 mol x 32.06 g/mol = 4.482 g (rounded to three decimal places)

Therefore, the mass of 8.42 x \(10^{22\) atoms of sulfur is approximately 4.482 grams.

Remember to always pay attention to the number of significant figures in the given values and round your final answer to the appropriate number of decimal places. In this case, we rounded to the nearest hundredth of a gram since the original value was given to two decimal places.

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Answer:

to study sub terranian earth movements

Explanation:

8H earth science

Answer:

B-to determine the location of an epicenter

Explanation:

Seismologists study earthquakes by going out and looking at the damage caused by the earthquakes and by using seismographs. A seismograph is an instrument that records the shaking of the earth's surface caused by seismic waves and determine the location of an epicenter

-Source: Geo.mtu.edu

Sodium chloride is white, crystalline solid at room temperature.

It is a compound whose components atoms are sodium and chlorine.

The atoms of the two elements combine chemically through an ionic bond. The sodium donates it valence electron to the chlorine atom.

Thus, sodium chloride is an ionic compound. It has a characteristic white appearance and crystalline structure.

The compound is a solid at room temperature. It has a melting point of 801 °C.

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