what is the correct name for the compand that has the chemical formula:NaOH​

To prepare 500.0 mL of a 1.00-M solution of NaOH, you need to dilute a certain volume of a more concentrated solution of NaOH with water. The formula for dilution is M1V1 = M2V2, where M1 and V1 are the molarity and volume of the concentrated solution, and M2 and V2 are the molarity and volume of the diluted solution. You are given a solution of NaOH with a concentration of 3.41 M, and you want to find the volume of this solution that you need to dilute. Substituting the known values into the formula, you get:

Solving for V1, you get:

Therefore, you need to measure 146.6 mL of the 3.41-M solution of NaOH and add water to make 500.0 mL of a 1.00-M solution of NaOH.

Volume or it can also be called solid content is a calculation of how much space can be occupied in an object. The object can be a regular object or an irregular object. Regular objects such as cubes, blocks, cylinders, pyramids, cones, and balls.

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Answer: 4g/cm^3 or 4000g/L (4kg/L)

Explanation:

I'm not sure what units the question intended so I put both. For the first one, the equation for density is mass/volume so I divided the 20g by 5cm^3 to get 4g/cm^3. Just in case those aren't the intended units for volume and is instead liters, one cm^3 equals one ml. In addition, there are 1000ml in every liter so you can determine the amount per liter by multiplying 4g/ml by 1000 to get 4000g/L or 4kg/L.

I hope this helps.

The initial concentration in the reaction mixture will contain [A] = 0.1 M and [B] = 1.0 M

Below is the reaction

A(g) → B(g)

And the equilibium constant will be explained in terms of [A] and [B]:

Keq = 10 = [B]/[A]

If the first conditions are that [A] = 1.1 M and [B] = 0.0 M, the conditions at equilibrium is:

[A] = 1.1M - x

[B] = 0.0M + x

Now we rewrite Keq:

Keq = 10 = [0.0 +x] / [1.1 -x]

at the end we got it  for x:

10 = [0.0 +x] / [1.1 -x]

10 * (1.1-x) = x

11 - 10x = x

11 = 11x

x = 1

equilibrium, the concentrations are:

[A] = 1.1 M - 1 = 0.1 M

[B] = 0.0 M + 1 = 1.0 M

Thus, the concentration of A is 0.1 M and the concentration of B is 1M.

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The correct balanced redox reaction is:

H2S + HNO3 + 8H+ → NO + S + 4H2O

Assigning oxidation numbers to each element:

HNO3: Hydrogen (H) is +1, Nitrogen (N) is +5, Oxygen (O) is -2

H2S: Hydrogen (H) is +1, Sulfur (S) is -2

NO: Nitrogen (N) is +2, Oxygen (O) is -2

S: Sulfur (S) is 0

H2O: Hydrogen (H) is +1, Oxygen (O) is -2

Determine the elements undergoing oxidation and reduction:

HNO3: Nitrogen (N) is reduced from +5 to +2

H2S: Sulfur (S) is oxidized from -2 to 0

Balance the non-oxygen and non-hydrogen elements:

The elements other than oxygen and hydrogen are nitrogen (N) and sulfur (S). The equation is already balanced in terms of the non-oxygen and non-hydrogen elements.

Balance the oxygen atoms:

On the left side, there are three oxygen (O) atoms from HNO3, and on the right side, there are two oxygen atoms from NO and one oxygen atom from H2O. To balance the oxygen atoms, add one water molecule (H2O) to the left side:

Balance the hydrogen atoms:

On the left side, there are two hydrogen (H) atoms from HNO3 and two hydrogen atoms from H2O. On the right side, there are two hydrogen atoms from H2S. To balance the hydrogen atoms, add four hydrogen ions (H+) to the right side:

HNO3 + H2S + H2O → NO + S + H2O + 4H+

Balance the charges:

On the left side, the charge is neutral. On the right side, the charge is also neutral.

HNO3 + H2S + H2O → NO + S + H2O + 4H+

The balanced equation is:

H2S + HNO3 +  H2O → NO + S + H2O + 4H+

Therefore, the correct balanced redox reaction is:

H2S + HNO3 + 8H+ → NO + S + 4H2O

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A large drainage canal contained a number of little check dams that prevented erosion in older, higher-lying areas.

A check dam is a tiny structure built over a drainage ditch to slow down water flow and prevent erosion. In first-developed areas, check dams and wide grassy slopes prevent erosion.

Water erodes curves on the outside and deposits eroded material on the interior, creating meanders. The positions of the curves change throughout time. A floodplain is produced as meanders erode in different directions. On both sides of a river, there is a large, flat region.

Floodplain erosion has been made worse by the clearing of catchments for urban and agricultural development for two reasons: first, due to changes in surface and groundwater discharge, and second, due to loss of soil strength.

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An example of an electrocyclic reaction is the Diels-Alder reaction. New σ-bonds, that are energetically higher stable than that of the π-bonds, are formed during this reaction.

A conjugated diene & an alkene (dienophile) react to generate unsaturated six-membered rings in the Diels-Alder reaction. The reaction is also known as a "cycloaddition" because it results in the production of such a cyclic product through a cyclic transition state.

Because it is created whenever the electron-withdrawing group of the dienophile are facing in the direction of the electrons of the diene, endo is typically the main result.

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Dolostone is composed of the mineral dolomite, which is similar to calcite in limestone, except that dolomite contains magnesium.

Dolostone, also known as dolomite rock, is a sedimentary rock composed mainly of the mineral dolomite. Dolomite, a calcium magnesium carbonate mineral, is the primary component of dolostone, making up around 90-95 percent of the rock. Dolostone is a rock that is similar to limestone and is often mistaken for it.

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Answer:

Q.89

Alkane - CnH(2n+2)

given that 8 H = > 8= 2n+2

therefore n= 3

C3H8 = 12×3 + 8×1= 36 +8 = 44

Total 5 valence electrons nitrogen provide to distribute when constructing the Lewis structure of NH3.

Ammonia (NH3) is a colourless, pungent gas and is made up of nitrogen and hydrogen. It's molecular geometry is trigonal pyramidal and it's hybridization is sp3 hybridization. In NH3, N is a central atom which contributes 5 valence electrons as we know Nitrogen belongs to the 15th group and each hydrogen contributes 1 electrons and that 1 electron is its valence electron. In the chemical compound NH3, we can see that there is 1 Nitrogen and 3 Hydrogen atoms are present, so the total no. of valence electrons in ammonia is 8 electrons (1x5 electrons of N and 3x1 electrons of Hydrogen). So, Nitrogen contribute 5 valence electrons in which 3 electrons are utilised for the 3 N-H bonds and the remaining 2 are localised on the Nitrogen as a lone pair.

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The molarity of the sodium bicarbonate solution is 11.2 M.

We need to know the amount of sodium bicarbonate (NaHCO₃) dissolved in a given volume of solution to calculate its molarity. Let's assume that we have dissolved 1 tsp (teaspoon) of NaHCO₃ in a solution.

According to the problem, 1 tsp = 4.9 mL. We need to convert the volume into liters:

4.9 mL = 4.9/1000 L = 0.0049 L

Now we need to know the amount of NaHCO₃ in moles that is dissolved in this volume of solution. The molar mass of NaHCO₃ will be 84.01 g/mol. Let's assume that the NaHCO₃ is pure and completely dissolved in the solution.

We can use the following formula to calculate the molarity of the solution:

Molarity (M) = moles of solute/liters of solution

moles of NaHCO₃ = mass of NaHCO₃ / molar mass of NaHCO₃

Assuming 1 tsp of NaHCO₃ is equivalent to 4.6 g (which is the approximate weight of 1 tsp of NaHCO₃), we can calculate the moles of NaHCO₃:

moles of NaHCO₃ = 4.6 g / 84.01 g/mol = 0.0548 moles

Now we substitute the values into formula for molarity:

Molarity (M) = 0.0548 moles / 0.0049 L

= 11.2 M

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Around 4.6 billion years ago, the Earth originated from a massive cloud of gas and dust known as the solar nebula.

Here are ten key points about the formation of Earth:

Nebular Hypothesis: Earth's formation is explained by the Nebular Hypothesis, which proposes that the solar system formed from a rotating disk of gas and dust.

Accretion: Small particles in the nebula collided and stuck together through a process called accretion, gradually forming planetesimals and protoplanets.

Planetesimal Collisions: Over time, planetesimals merged through collisions, leading to the formation of larger planetary bodies like Earth.

Differentiation: The heat generated by collisions and the decay of radioactive elements caused Earth to differentiate into layers with a dense metallic core, a mantle, and a crust.

Core Formation: The metallic core formed through the accretion of heavy elements, particularly iron and nickel.

Bombardment Period: During the early stages of Earth's formation, it experienced intense bombardment by leftover planetesimals and asteroids.

Water Delivery: Water was likely delivered to Earth through comets and asteroids during the Late Heavy Bombardment phase.

Atmosphere Formation: Earth's atmosphere gradually developed through outgassing from volcanic activity and the release of trapped gases from the interior.

Early Oceans: As Earth cooled down, water vapor condensed, leading to the formation of the Earth's oceans.

Habitability: Earth's distance from the Sun, its atmosphere, and the presence of liquid water have made it conducive to supporting life.

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Answer:

choice D. Ionic, because valence electrons are transferred.

Explanation:

Therefore, it takes approximately 23.2 kJ of energy to boil 100 mL of water.

The correct answer is D. 100 mL × 1g divided by 1mL × 1mol divided by 18.02g × 4.186 kJ/mol = 23.2 kJ

To calculate the energy required to boil 100 mL of water, we need to use the specific heat capacity of water, which is approximately 4.186 J/g·°C. The molar mass of water is 18.02 g/mol.

First, we convert the volume of water from milliliters to grams:

100 mL × 1 g/1 mL = 100 g

Then, we calculate the number of moles of water:

100 g × 1 mol/18.02 g = 5.548 mol

Finally, we multiply the number of moles by the molar heat of vaporization of water, which is approximately 40.65 kJ/mol:

5.548 mol × 4.186 kJ/mol = 23.2 kJ

Therefore, it takes approximately 23.2 kJ of energy to boil 100 mL of water.

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7 days old hahahshahah

A. An element.

As long as it's on the periodic table, it's always an element.

A compound is made up of two or more elements in a chemical reaction, resulting in covenant and/or ionic bonds.

A homogenous mixture (a solution) is a combination of two or more elements physically without causing a reaction (like salt water or applejuice).

Heterogeneous mixtures are physical combinations that mix but don't appear uniform (think of cereal in milk.)

Based on the information given, it seems that the unknown solid compound was soluble in water at room temperature.

After stirring for some time, all of the compound dissolved in the distilled water. The solution was then drained off and the water was evaporated under vacuum. This caused the compound to precipitate out of the solution and form a solid. The solid was then washed, dried, and weighed to determine its mass. It's possible that this process was used to isolate and purify the compound from impurities or other substances in the original sample. The final weight of the precipitate will depend on the initial quantity of the unknown solid that was added to the distilled water.

A chemistry student added an unknown solid compound to distilled water at a specific temperature. After a certain period of stirring, the compound completely dissolved. The student then separated the solution and evaporated the water under vacuum. This process resulted in a precipitate, which the student washed, dried, and weighed. The weight of the precipitate was recorded, helping to identify the unknown compound and its properties through this experimental procedure.

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Answer:

Explanation:

solidos disueltos totales TDS

okAnswer:

Explanation:

yep

Answer:

A- Before the mechanic left, the molecules were moving away from each other. When she returned, they were moving around each other.

Explanation:

Brainliest?

"To insure proper operation of an oxygen cylinder regulator, make sure no oil residue is present" is true because oil residue can compromise the functioning of an oxygen cylinder regulator.

Explanation: It is true that to ensure proper operation of an oxygen cylinder regulator, it is important to make sure that no oil residue is present. Oxygen cylinders contain highly concentrated oxygen that can react violently with oil or grease, leading to combustion or explosions. Oil residue can contaminate the regulator and pose a significant safety risk.

Therefore, it is crucial to keep oxygen cylinders and their regulators free from any oil or grease to maintain safe and proper functioning.

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Answer: argon

Explanation:

using the last clue “avg atomic mass of 3.33x greater than carbon-12” we can deduce the atomic mass of the element is 12x3.33=40(2sf) hence its argon. we can further confirm from third clue that it is a noble gas hence unreactive

The moles of sodium hydroxide when you have 350.0 ml of a 0.650 m sodium hydroxide solution is 0.2275 moles.

According to the definition of molarity, we can draw the definition of 1M as

If 1 Mol of solute is present in 1000 mL of solution, then the solution will be called one molar ( or 1M)

​Thus in the given problem 0.650 M of NaOH means,

1000 mL of solution contains 0.650 M NaOH

So, 350 mL  0.650 M NaOH solution will contain

0.650 × 350/1000 moles of NaOH.

That is equal to  0.2275 moles of NaOH.

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Water exhibits polarity and oil does not. The correct option is A.

This is due to the molecular structure of water, which has a partial positive charge on one end and a partial negative charge on the other. This property is known as polarity and allows water molecules to attract each other, forming hydrogen bonds. Oil, on the other hand, is made up of nonpolar molecules that do not have a charge distribution.

As a result, oil molecules are not attracted to water molecules and do not mix well. In fact, they tend to form separate layers, with the oil floating on top of the water. This is why the old cliché "oil and water don't mix" is true.

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Answer: 1.215 × 10^4  i think

Explanation:

Answer: Centimeters

Explanation: no explanation needed

Answer:

Radon

Explanation:

:

Answer:

c. Radon (Rn)

Explanation:

hope this can help

When we add the two reactions X and Y as shown, we obtain the reaction Z; 2CH4(g) +3O2(g) + O2(g)  →  4H2O(g) + 2CO2(g)

From the full question, we can see that reaction X is given as;

2CH4(g) +3O2(g) →2CO(g) + 4H2O(g)

Reaction Y is given as;

2CO(g) + O2(g) → 2CO2(g)

If we add the two reactions together, we have;

2CH4(g) +3O2(g) + 2CO(g) + O2(g)  → 2CO(g) + 4H2O(g) + 2CO2(g)

We now have to cancel out  2CO(g) on both sides of the reaction equation;

2CH4(g) +3O2(g) + O2(g)  →  4H2O(g) + 2CO2(g)

Hence the reaction Z is 2CH4(g) +3O2(g) + O2(g)  →  4H2O(g) + 2CO2(g)

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Answer:

lemon- citric acid

milk- lactic acid

Answer:

lemon=citric and malic acids.

milk=Lactic Acid

Explanation:

The finding would most concerning when a assessing a woman at 12 hours postpartum after a C-section delivery is signs of infection.

Signs of infection can include fever, chills, foul-smelling discharge from the incision site, redness or swelling around the incision, and abdominal pain. Infections after C-section delivery can lead to serious complications, including sepsis and wound dehiscence. Therefore, it is important to monitor for signs of infection and promptly treat any infections that are detected. Other important factors to assess in the postpartum period after C-section delivery include pain levels, mobility, vital signs, and the amount and color of vaginal bleeding.

It is crucial to provide close monitoring and support for women who have undergone a C-section delivery to ensure that they have a safe and healthy recovery. Encouraging early ambulation and providing pain management, as well as clear instructions for wound care and monitoring for signs of infection, can help prevent complications and promote a smooth recovery. So therefore when assessing a woman at 12 hours postpartum after a C-section delivery, there are several findings that would be concerning, but the most concerning finding would be signs of infection.

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