how many milliliters of 3.0m naoh are required to react with 4.0ml of 16m hno3?

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L}\\\)

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

\(n = \frac{3.73 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.73}{6.02} \\ = 0.619601...\)

We have the final answer as

Hope this helps you

Answer:

d = m/v

Explanation:

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume.

Answer:

Density= mass/volume

Explanation:

from def: Density is mass per unit volume.

Answer: The answer is B. The pressure inside the tires increased.

Explanation:

The relationship between the pressure, volume, and temperature of a gas is described by the ideal gas law, which is usually written as:

\($$PV = nRT$$\)

where:

- \(\(P\)\) is the pressure,

- \(\(V\)\) is the volume,

- \(\(n\)\) is the number of moles of gas,

- \(\(R\)\) is the ideal gas constant, and

- \(\(T\)\) is the temperature (in Kelvin).

In this case, the volume \(\(V\)\) and the number of moles \(\(n\)\) of air in the tires stay the same. The temperature \(\(T\)\) is increasing. Therefore, for the equation to remain balanced, the pressure \(\(P\)\) must also increase.

So, the answer is B. The pressure inside the tires increased.

The amount of drink that needs to evaporate to reach a drinkable temperature will vary based on the specific circumstances.

To determine how much of the drink must evaporate for it to reach the drinkable temperature, we need more information about the specific drink and its initial temperature. However, in general, evaporation is a cooling process as it removes heat from the liquid. So, if a drink is initially too hot, some of it will need to evaporate for it to reach a drinkable temperature. The amount that needs to evaporate depends on factors such as the volume and temperature of the drink, as well as the desired drinkable temperature. To calculate the specific amount, you would need to consider the heat transfer properties of the liquid, the surrounding environment, and the time available for evaporation. In conclusion, the amount of drink that needs to evaporate to reach a drinkable temperature will vary based on the specific circumstances.

To know more about evaporation visit:

https://brainly.com/question/30589597

#SPJ11

Answer: 60 Grams of water are produced, because you can't get more than the amount that was in the original ice cube

Explanation:

Answer:

Fe2O3

Explanation:

if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged

Answer:

Yes

Explanation:

Yes, A substance can be a lewis acid without being a Bronsted-Lowery acid because there are some substances which cannot donate protons(Bronsted-Lowery acid) but can accept a pair of electron.

For Example:

Let us take the example of BF₃

BF₃ contains no proton so it is not a Bronsted Lowery Acid

However, BF₃ has an incomplete octet with 6 electrons. It needs an electron pair to complete its octet. It accepts a pair of electron to become a Lewis Acid

Answer:

Interesting question, and the answer is yes, a substance can be a Lewis acid but not a Bronsted-Lowrey acid. To see this, let’s take a look at the definitions of each.

Explanation:

Bronsted-Lowrey acid:

A compound that is a hydrogen ion (proton) donor. When dissolved in the solvent in question, these compounds lose a proton to the solution. The concentration of these protons in solution is referred to as acidity, and is measured on the pH scale.

Lewis acid:

A substance that is an electron pair receiver. In solution, free electron pairs will form bonds with the substance, either ionic or covalent. In this definition, a proton is itself an acid, rather than a part of an acid.

A key thing to note here is that, in the Bronsted-Lowrey definition, there must be a proton. That means, all Bronsted-Lowrey acids are of the form  HXn→H++Xn− , showing the dissociation in solution. However, a Lewis acid needs only to have the ability to accept an electron pair, which means that  H+  is a Lewis acid, instead of what makes a compound an acid. Additionally, that means that the number of compounds that qualify as a Lewis acid are expanded. A favorite example of mine is boron trifluoride, or  BF3 . It is a common reagent in organic synthesis, it is a Lewis acid, but does not have any hydrogen, so it cannot be a Bronsted-Lowrey acid

The organic nutrient stored in peanuts come from the peanut plants whereby peanut plants use sunlight to change inorganic matter into organic nutrients.

Option B is correct.

Inorganic matters are components of the soil as well as the CO₂ present in the soil. Thus, peanut plants use these inorganic matters together with the sunlight to carry out photosynthetic activities to manufacture food to the peanut plant so that the peanut plant can germinate, flower, and produce peanuts.

The process of the change of the inorganic matter to organic nutrients are as follows:

Peanut plants                        → peanuts                     → Peanut butter.

(inorganic material present)   (organic nutrients)     (processed peanuts)

Learn more about organic nutrients here:

https://brainly.com/question/3409539?referrer=searchResults

Answer:b

Explanation:

approved by me and A P E C

Convergent boundary type of plate boundary occurred at the subduction.

Divergent boundary  type of plate boundary occur at the subduction.

Convergent boundary type of plate boundary occur at new crust form.

Convergent boundary type of plate boundary that  volcanoes form.,

Transform boundary type of plate boundary occurs at a river.What are different types of boundaries in details?

An Earth region known as a convergent border occurs where two or more lithospheric plates collide. Subduction is the inevitable sliding of one plate beneath the other. The Wadati-Benioff zone, a plane with a high frequency of earthquakes, can be used to designate the subduction zone.

The Pacific Plate slides past the North American Plate as it moves northwest, establishing the transform plate border, which is a vast zone. In addition to the San Andreas Fault, it has other smaller faults. 11

When two tectonic plates diverge, a diverging border is created. As magma (molten rock) rises from the Earth's mantle to the surface and solidifies to form new oceanic crust, earthquakes frequently occur along these borders. Divergent plate boundaries can be seen, for instance, in the Mid-Atlantic Ridge.

Learn more about plate boundary at:

https://brainly.com/question/14565919

#SPJ1

0.16ml is the ml of 18.0 M H₂SO4 contains 3 moles of H₂SO\(_4\). The volume of something like a container is typically thought of as its capacity.

A measurement of three-dimensional space is volume. Several imperial or US customary units, as well as SI-derived units (such the cubic meter and liter), are frequently used to quantify it quantitatively.

Volume and length (cubed) have a symbiotic relationship. The volume of something like a container is typically thought of as its capacity, not as the amount of space it takes up. In other words, the volume refers to the quantity of fluid (liquid or gas) that the container may hold.

molarity = moles/ volume of solution in liter

18.0 = 3/ volume of solution in liter

volume of solution in liter=0.16ml

Therefore, 0.16ml is the ml of 18.0 M H₂SO\(_4\) contains 3 moles of H₂SO\(_4\).

To learn more about volume, here:

https://brainly.com/question/23416233

#SPJ1

The solubility of the gas if the pressure is changed to 100 kPa is 0.742 g/L

As the pressure of a gas increases, the solubility increases, and as the pressure of a gas decreases, the solubility decreases.

Thus, Solubility varies directly with Pressure

If S represents Solubility and P represents Pressure,

Then we can write that

S ∝ P

Introducing proportionality constant, k

S = kP

S/P = k

∴ We can write that

\(\frac{S_{1} }{P_{1} } = \frac{S_{2} }{P_{2} }\)

Where \(S_{1}\) is the initial solubility

\(P_{1}\) is the initial pressure

\(S_{2}\) is the final solubility

\(P_{2}\) is the final pressure

From the given information

\(S_{1} = 0.890 \ g/L\)

\(P_{1} = 120 \ kPa\)

\(P_{2} = 100 \ kPa\)

Putting the parameters into the formula, we get

\(\frac{0.890}{120}=\frac{S_{2}}{100}\)

\(S_{2}= \frac{0.890 \times 100}{120}\)

\(S_{2}= 0.742 \ g/L\)

Hence, the solubility of the gas if the pressure is changed to 100 kPa is 0.742 g/L

Learn more on Solubility here: https://brainly.com/question/4529762

The ocean floor being featureless was the assumption was proved wrong after the invention of sonar.

This employs the use of sound propagation to measure the distance or presence of objects under the water.

This helped to show that the ocean floor had features such as canyons, mountains etc hence option B was chosen.

Read more about Sonar here https://brainly.com/question/14090821

#SPJ1

Answer:

Even though the two substances possess many similarities, they have some unique properties. In turn, since they have the same properties, if they were the same substance, it would make matters worse, if the same chemical was in two different places, there would not be a difference between them since they are the same, just as it is with are two different chemicals would have differing properties since they are two properties would vary from one another since they are 2 totally different things!

a.  The mass of Mg in \(MgSO_4\) is 0.00053 g.

b. The concentration (percent) of Mg in \(MgSO_4\) is 0.167%.

a. To determine the mass of Mg in \(MgSO_4\) , we first need to find the number of moles of \(BaSO_4\) that precipitated. We can use stoichiometry to relate the amount of \(BaSO_4\) formed to the amount of \(MgSO_4\) present in the mixture.

\(MgSO_4\) \(+\) \(Ba(NO_3)_2\) → \(BaSO_4\)  \(+\) \(Mg(NO_3)_2\)

The balanced equation shows that 1 mole of \(MgSO_4\) reacts with 1 mole of \(BaSO_4\) . Therefore, the number of moles of \(MgSO_4\) in the mixture is equal to the number of moles of \(BaSO_4\) formed.

The molar mass of \(BaSO_4\) is:

\(BaSO_4\) = 137 + 32 + 4(16) = 233 g/mol

The total number of moles of \(BaSO_4\) produced is:

n\((BaSO_4)\) = m\((BaSO_4)\) / M\((BaSO_4)\)  = 0.6168 g / 233 g/mol = 0.002650 mol

Since 1 mole of \(MgSO_4\) reacts with 1 mole of \(BaSO_4\) , the number of moles of \(MgSO_4\) in the mixture is also 0.002650 mol.

The molar mass of \(MgSO_4\) is:

\(MgSO_4\) = 24 + 32 + 4(16) = 120 g/mol

The mass of Mg in the mixture is:

m(Mg) = n\((MgSO_4)\)x M\((MgSO_4)\) x (24 g/mol / 120 g/mol) = 0.002650 mol x 120 g/mol x (24/120) = 0.00053 g

Therefore, 0.00053 g is the mass of Mg in \(MgSO_4\)

b. To find the concentration (percent) of Mg in \(MgSO_4\) , we can use the formula:

concentration (percent) = (mass of Mg / mass of \(MgSO_4\)) x 100%

The mass of Mg in \(MgSO_4\) is 0.00053 g, as calculated in part a. The mass of \(MgSO_4\) is:

m\((MgSO_4)\) = M\((MgSO_4)\) x n\((MgSO_4)\) = 120 g/mol x 0.002650 mol = 0.318 g

Therefore, the concentration of Mg in \(MgSO_4\) is:

concentration (percent) = (0.00053 g / 0.318 g) x 100% = 0.167% (rounded to three significant figures)

Hence, 0.167% is the concentration of Mg in \(MgSO_4\)

For more such questions on concentration, click on:

https://brainly.com/question/28564792

#SPJ11

The probable question may be:

A 0.4550-g solid mixture containing MgSO4 and Ba(NO3)2 is dissolved in water and treated with an excess of Ba(NO3)2, resulting in the precipitation of 0.6168 g of BaSO4. a. Calculate the mass of Mg in MgSO4 b. Find out the concentration (percent) of Mg in MgSO4.

MgSO4 + Ba(NO3)2 = BaSO4+ Mg(NO3)2

Atomic masses: C=12, H=1, O=16, Ca=40, S=32, K=39, Mg=24, N=14, Ba=137

Answer:

false i am pretty sure because dead flowers.

Molar expansion accounts for the changes in the number of moles of a component within a reactor and can have a significant impact on the volume of a plug flow reactor, particularly in cases where the reactor volume is not constant.

(iii) "ei" is commonly used to represent the molar expansion term in chemical reaction engineering equations. It refers to the change in molar flow rate of a particular component i per unit time, per unit volume. The molar expansion term accounts for the variation in the number of moles of a component within a reactor due to chemical reactions or phase changes.

In a plug flow reactor, molar expansion can have different impacts on the reactor volume depending on the specific case. In part (i), where there is a constant volume, the molar expansion does not affect the reactor volume. The molar flow rates of reactants and products may change due to reactions, but the overall volume remains constant.

In part (ii), where the reactor is a semi-batch reactor with a varying volume, the molar expansion can significantly influence the volume of the reactor. As the reaction proceeds, the molar flow rates of reactants and products change, which can lead to changes in the total number of moles and, consequently, impact the reactor volume. The volume may increase or decrease depending on the molar expansion and the specific reaction taking place.

to learn more about Molar click here:

brainly.com/question/16587536

#SPJ11

Phospholipids spontaneously form bilayers in aqueous solutions because their fatty acid tails are not highly soluble in water and exposed polar head groups that are interact with water.

A glycerol molecule is linked to two hydrophobic fatty acid chains by a negatively charged phosphate group to create phospholipids (which is hydrophilic). Due to its negative charges, which easily communicate with polar water molecules, the hydrophilic portion of the phospholipid is attracted to water molecules.

A single phospholipid molecule has two consecutive chains of fatty acids that make up the lipid "tails" and a phosphate group, which would be referred to as the "head," on the other end. The negatively charged phosphate group makes the head polar and hydrophilic, or "water loving," in origin. As a consequence, the water is dragged to the phosphate heads.

To know more about phospholipids visit:

https://brainly.com/question/8889417

#SPJ4

The energy that is released for the breaking of bonds is 229 kJ/mol.

We should be able to recall that the enthalpy of the reaction taken to be the energy that is evolved or absorbed in the reaction that is ongoing. We have to note that in the course of the reaction there would be the breaking and the making of bonds.

Now we know that;

The bond energy can be given as;

Sum energy of the broken bonds of reactants  - Sum of the energy of the formed bonds

Hence;

(945 + 498) - 2(607)

1443 - 1214

= 229 kJ/mol

Learn more about enthalpy:https://brainly.com/question/13996238

#SPJ1

Bond order of N2+ is 2.5. It is a diamagnetic substance.

Bond order is termed as the number of chemical bonds between a pair of the atoms. For example: In case of acetylene the bond order between the two carbon atoms is 3, in diatomic nitrogen the bond order is 3, and the C-H bond order is 1.

The bond order of N2+ is 2.5.

Bond order = 1 / 2[Nb - Na] Where, Nb = no. of electrons in bonding molecular orbital and Na = number of electrons in antibonding molecular orbital.

Bond order = 9-4 / 2

= 2.5

N2+ is diamagnetic in nature because they do not have any unpaired electrons they are having 14 electrons.

To know more about bond order here

https://brainly.com/question/29853110

#SPJ4

Answer:

He is wrong . Most accurate is Buret .

Explanation:

The number of significant figure denotes the level of accuracy of a measurement .

Beaker can measure liquid in mL upto significant figure of 2 . That means it can measure volume in terms of 10 , 20 , 30mL etc . It can not measure 25 mL

accurately . The last figure of 28 mL is read by guess in the question . So it is not an accurate measurement .

Similarly , graduated cylinder can measure liquid upto significant figure of 3 .  That means it can measure volume in terms of 11 , 22 , 33 mL etc . It can not measure 25.5  mL accurately . The last figure of 28.3  mL is read by guess in the question . So it is less  accurate measurement .

Similarly , buret  can measure liquid upto significant figure of 4 .  That means it can measure volume in terms of 11.2 , 22.3 , 33.5 mL etc . It can not measure 25.53  mL accurately . The last figure of 28.32  mL is read by guess in the question . So it is most accurate among all the three instrument because it can measure accurately mL upto one tenth of it .

Answer:

No

Explanation:

The number of significant figure denotes the level of accuracy of a measurement .

Beaker can measure liquid in mL upto significant figure of 2 . That means it can measure volume in terms of 10 , 20 , 30mL etc . It can not measure 25 mL

accurately . The last figure of 28 mL is read by guess in the question . So it is not an accurate measurement .

Similarly , graduated cylinder can measure liquid upto significant figure of 3 .  That means it can measure volume in terms of 11 , 22 , 33 mL etc . It can not measure 25.5  mL accurately . The last figure of 28.3  mL is read by guess in the question . So it is less  accurate measurement .

Similarly , buret  can measure liquid upto significant figure of 4 .  That means it can measure volume in terms of 11.2 , 22.3 , 33.5 mL etc . It can not measure 25.53  mL accurately . The last figure of 28.32  mL is read by guess in the question . So it is most accurate among all the three instrument because it can measure accurately mL upto one tenth of it .

Hope this helps

Answer:

3×6.022×1023 oxygen molicules

Hope it helps

D because that’s the only one that makes sense

Pure substances typically only include one type of atom or molecule and are homogeneous in nature. The majority of these chemicals have a consistent or homogeneous makeup. Thus, option C is correct.

Elements are pure compounds that cannot be chemically broken down into less complex ones. Iron, gold, sulfur, oxygen, and oxygen are some well-known elements.

Because it cannot be converted into a more basic substance, an element is an example of a pure substance. Examples of pure substances include water, neon, and sodium chloride (NaCl) (table salt).

One element or a few related compounds make up pure substances. A kind of matter with a predictable chemical composition and physical properties is referred to as a chemical substance.

Homogeneous mixes are made up of two or more components or compounds that cannot be seen separately from one another.

Therefore, a single element or compound show properties of pure substance.

Learn more about pure substance here:

https://brainly.com/question/18634105

#SPJ2

The chemist should observe the formation of solid copper metal, a change in color of the solution, and the disappearance of the aluminium foil through this unbalanced equation.

The balanced equation for the reaction between copper (II) chloride and aluminum is:

3CuCl2 + 2Al → 2AlCl3 + 3Cu

In this reaction, aluminum replaces copper in the copper chloride solution to form aluminium chloride and copper metal.

The likely observations when the reaction stops are:

1. The solution may change color, indicating that a chemical reaction has occurred. Copper (II) chloride is blue, while aluminum chloride is colorless.

2. Solid copper metal may form and settle at the bottom of the container, indicating that a precipitation reaction has occurred.

3. The aluminum foil may appear to have dissolved or disintegrated, as it has been consumed in the reaction.

4. The reaction mixture may become warmer due to the exothermic nature of the reaction.

To learn more about unbalanced equation Click here:

brainly.com/question/11322377

#SPJ4

Yes, an electron cause an electromagnetic wave to vibrate.

One of the waves is propagated by simultaneous periodic variations of electric and magnetic field intensity and that includes radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Electromagnetic waves are produced when something vibrates—an electric charge that moves back and forth.

When an electric charge vibrates, the electric field around it changes. Because the electric charge is in motion, it also has a magnetic field around it.

This magnetic field also changes as the charge vibrates.

Therefore, an electron causes an electromagnetic wave to vibrate.

Learn more about the electromagnetic wave here:

https://brainly.com/question/3596193

#SPJ1

A girl roller-skating has kinetic energy.

Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.

Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.

So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.

To learn more about kinetic energy, check out https://brainly.com/question/24933254

Answer:

1.6cm3

Explanation:

density = mass/volume

15.6g/cm3= 9.75 g/volume

15.6/9.75 = volume

1.6cm3 = volume

Answer:

D. has different properties when sampled in different areas.

Explanation:

The general property of a mixture says that each substance or component in a mixture has its individual or different property which can be separated on the basis of different methods.

Such as a mixture of oil and water is a heterogeneous mixture and have different properties or different densities, which helps them to be sampled in different areas.

Hence, the correct answer is "D".