which acid has a more positive value of /1g 0 for its ionization in water, co~ ,e~ and which acid is stronger? acid ka hn02 3x]q--4 hcn 5x]q-10 more positive /1g 0 stronger acid (a) hn02 hcn (b) hn02 hn02 (c) hcn hcn (d) hcn hn02 g

Answer:

increase

Explanation:

because in endothermic reaction heat is absorbed

They give us the balanced equation of the reaction.

3 KOH + H3PO4 → K3PO4 + 3H2O

So we can continue with the calculations.

We first find the moles of K3PO4 that will be formed. For that we look at the stoichiometric coefficients of the reaction. The K3PO4 to KOH ratio is 1/3. So the moles of K3PO4 will be:

To find the mass we must multiply the moles found by the molar mass of potassium phosphate. The molar mass of potassium phosphate is:212.3g/mol

Answer: The mass of potassium phosphate produced is 149 grams

Answer:

55

Explanation:

The balanced  chemical equation for the reaction that takes place when a solution of sodium sulfate is mixed with strontium chloride is

Na2SO4 + SrCl2 → 2Nacl + SrSO4

Balanced chemical equation is a chemical reaction in which the number of atoms and moles of the reactant side is the same as the product. This means the reactant side has equal number of atoms and moles with the product.

The balanced equation for the reaction that takes place when a solution of sodium sulfate is mixed with strontium chloride is

Na2SO4 + SrCl2 → 2Nacl + SrSO4

In this reaction, sodium sulfate with strontium chloride to form sodium chloride and strontium sulfate. The coefficients in the balanced equation indicate the stoichiometric ratios of the reactants and the products, ensuring that the same number of atoms of each element is present on both sides of the equation.

Learn more about balanced chemical equation below.

https://brainly.com/question/11904811

#SPJ1

         Certain metal-based nanoparticles have the potential to interact with the hydrogen peroxide found in every cell and change it into a hydroxyl radical that can enter the nucleus and cause DNA damage.

     Scratch-resistant eyewear, crack-resistant paint, anti-graffiti coatings for walls, transparent sunscreen, stain-repellent fabrics, self-cleaning windows, and ceramic coatings for solar cells are all products made with nanoparticles today.

    In addition to living matter, naturally produced nanoparticles can also be found in volcanic ash, ocean spray, fine sand, and dust (e.g. viruses). The diversity of synthetic nanoparticles is on par with that of its counterparts in nature, if not greater.

    The usage of nanoscale materials in medications, medical devices, biologics, cosmetics, and food is anticipated to rise significantly in the coming years, according to the FDA, which has already assessed and authorized a few nanotechnology-based items.

To Learn more About Nanoparticles, Refer:

https://brainly.com/question/11955521

#SPJ13

Answer:

C

Explanation:

The limiting reagent is NO and the mass of NO₃ formed in the reaction is 1.38 grams

The limiting reactant (or limiting reagent) is the reactant that gets consumed first in a chemical reaction and they determine the amount of product formed in a reaction.

2O₃ + 3NO → 3NO₃

From the balance equation 2 moles of trioxide reacted with 3 moles of nitrogen monoxide to produce 3 moles of nitric oxide.

molarity (O₃) = 7.40 / 48 = 0.15416666666 moles

molarity(NO) = 0.670 / 30.01 = 0.02232589136 moles

Therefore,

O₃  :  NO

 2  :  3

Therefore, the limiting reagent is NO. It will completely be used before the reaction comes to an end.

3(30.1) g of NO produces 3(62) g of NO₃

0.670 g of NO will produce ?

cross multiply

mass of NO₃ formed = 0.670 × 186 / 90.3 = 124.62 / 90.3 = 1.38006644518 = 1.38 grams.

learn more on mass here: https://brainly.com/question/10832711

yes

Explanation:

Which suggests that in an earlier time whales and dogs could have evolved from the same organism. the common ancestor in the 2 animals share notible traits. the pakicets was one of the whales ancestors and the grey wolf was the dogs ancestor.

The molecular formula of butadiene can be determined using the empirical formula and the molar mass. The empirical formula of butadiene is C2H3, which represents the simplest ratio of the atoms present in the compound.

To find the molecular formula, we need to determine the actual number of atoms in one molecule of butadiene. To do this, we compare the molar mass of butadiene with the empirical formula mass. The empirical formula mass of C2H3 can be calculated as follows: (2 * Atomic mass of carbon) + (3 * Atomic mass of hydrogen)
Using the atomic masses of carbon (12.01 g/mol) and hydrogen (1.01 g/mol), the empirical formula mass of C2H3 is:
(2 * 12.01 g/mol) + (3 * 1.01 g/mol) = 26.05 g/mol
The molar mass of butadiene is given as 54 g/mol.
To find the molecular formula, we divide the molar mass by the empirical formula mass:
54 g/mol / 26.05 g/mol = 2.07
The result, 2.07, is approximately 2. This means that the molecular formula of butadiene is approximately two times the empirical formula.
Therefore, the molecular formula of butadiene is (C2H3)2, which can be written as C4H6. The empirical formula of butadiene, C2H3, represents the simplest ratio of the atoms present in the compound. However, it doesn't provide information about the actual number of atoms in one molecule of butadiene.

To determine the molecular formula, we need to compare the molar mass of butadiene with the empirical formula mass. The empirical formula mass can be calculated by multiplying the atomic masses of each element in the empirical formula by the number of atoms present and summing them up. In this case, the empirical formula mass of C2H3 is calculated as follows:
(2 * Atomic mass of carbon) + (3 * Atomic mass of hydrogen)
Using the atomic masses of carbon (12.01 g/mol) and hydrogen (1.01 g/mol), the empirical formula mass of C2H3 is:
(2 * 12.01 g/mol) + (3 * 1.01 g/mol) = 26.05 g/mol
The molar mass of butadiene is given as 54 g/mol.
To find the molecular formula, we divide the molar mass by the empirical formula mass:
54 g/mol / 26.05 g/mol = 2.07
The result, 2.07, is approximately 2. This means that the molecular formula of butadiene is approximately two times the empirical formula.
Therefore, the molecular formula of butadiene is (C2H3)2, which can be written as C4H6.

To know more about formula visit:

https://brainly.com/question/20748250

#SPJ11

Answer:

a.the same as

Explanation:

The temperature of each 400mL bucket is about the same as the temperature of the original bucket of paint.

This is because the temperature of the paint inside the bucket is not dependent on the amount of paint present.

Answer:

99758 meters

Explanation: 1 mile=1609 meters. Just multiply 62 with 1609. Let me know if you want a conversion sheet.

The stroke volume in the next few cardiac cycles will be 100 ml if the end-diastolic volume is increased from 135ml to 165m.

The formula for stroke volume is given as;

SV = EDV - ESV

Here SV represents stroke volume, EDV represents end-diastolic volume and ESV represents end-systolic volume.

First, we calculate this person's end-systolic volume as follows;

If the person’s stroke volume was 70ml and his initial diastolic volume was 135 ml, then:

70 = 135 - ESV

70 - 135 = -ESV

-65 = -ESV

ESV = 65ml

Now the stroke volume in the next few cycles if the end-diastolic volume increase to 165 ml can be calculated as follows;

SV = 165 - 65

SV = 100ml

Therefore, the stroke volume in the next few cardiac cycles is calculated to be 100ml.

To learn more about stroke volume, click here:

https://brainly.com/question/11142433

#SPJ4

STP, or standard temperature and pressure, refers to the nominal atmospheric conditions at sea level. The temperatures and pressures are 0 degrees Celsius and 1 atmosphere, respectively. The mass of HCl at STP is 0.40 g.

The molar volume (Vm) is the volume occupied by one mole of a chemical element or chemical compound at standard temperature and pressure (STP). You may figure it out by dividing the mass density by the molar mass.

A mole (6.022 × 10²³ typical particles) of any gas takes up 22.4L at STP. The expression used to calculate the number of moles at STP is:

n = V₀ in L / 22.414

250cm³ = 0.25 L

n = 0.25 / 22.414

n = 0.0111

The molar mass of HCl = 36.45 g/mol

n = Mass/ molar mass

mass = n × molar mass

mass = 0.0111 × 36.45

mass = 0.40 g

To know more about STP, visit;

https://brainly.com/question/27775113

#SPJ12

Answer:

SULFUR: S²-

ALUMINIUM: Al³†

NITROGEN: N³-

CALCIUM: Ca²†

Answer:

3.96 × 10⁻³ mol Pb

Explanation:

Step 1: Find molar mass

Pb (Lead) - 207.2 g/mol

Step 2: Use Dimensional Analysis

\(0.821 \hspace{2} g \hspace{2} Pb(\frac{1 \hspace{2} mol \hspace{2} Pb}{207.2 \hspace{2} g \hspace{2} Pb} )\) = 0.003962 mol Pb

Step 3: Simplify

We have 3 sig figs

0.003962 mol Pb ≈ 0.00396 mol Pb

0.00396 mol Pb = 3.96 × 10⁻³ mol Pb

False. A prochiral center does not describe an sp_3 hybridized atom that can become a chirality center by changing one of its attached groups.

A prochiral center is an atom that possesses chirality, meaning it can become a chirality center by changing its stereochemistry. However, the statement in question is incorrect because a prochiral center does not require changing one of its attached groups to become a chirality center.

In contrast, a prochiral center is a type of stereocenter that exhibits chirality due to the presence of two different groups attached to it. It becomes a chirality center when one of the groups is replaced by another group, resulting in the formation of two distinct stereoisomers.

An example of a prochiral center is a carbon atom with three different groups attached to it. Upon substitution of one of the groups, the prochiral center becomes a chirality center, giving rise to enantiomers.

Therefore, the statement that a prochiral center can become a chirality center by changing one of its attached groups is false.

Learn more about prochiral from this link:

https://brainly.com/question/31486480

#SPJ11

Answer:

the devising or choosing of names for things, especially in a science or other discipline.

Explanation:

Hope It's Help

MARK ME AS BRAINLIEST:<

Answer: A nomenclature is a system of naming organisms.

The species to which the organism belongs is indicated by two words, the genus and species names, which are Latinized words derived from various sources.

Explanation:

Technician A's statement is partially correct. When moisture enters an A/C system, it can react with the refrigerant and lubricant oils to form acidic compounds, which can damage the A/C system components. However, it is not the moisture itself that creates the acid but rather the chemical reactions that occur when it mixes with the refrigerant and oils.

Technician B's statement is also correct. Evacuating an A/C system removes moisture by boiling it away. When the pressure in the system is reduced, any moisture present will boil and be removed from the system as a gas. This is an important step in the A/C system service process to ensure that the system operates properly and efficiently.

In conclusion, both technicians are partially correct. Moisture entering the A/C system can lead to the formation of acidic compounds, which can damage the system. Evacuating the system is an effective way to remove moisture and ensure proper operation of the A/C system.

To know more about the A/C system refer here :

https://brainly.com/question/27851668#

#SPJ11

Answer:D

Explanation:

The metal will not react

Answer:

idrk im sorry and iknow this didnt help bt im sorry

Explanation:

The number of moles of carbon in the sample is 4x.

To find the number of moles of carbon in the sample of nickel tetracarbonyl, we first need to calculate the molar mass of the compound. Nickel tetracarbonyl has a molar mass of 170.73 g/mol. This means that for every mole of nickel tetracarbonyl, there are 4 moles of carbon.

Assuming the chemical engineer has determined the number of moles of nickel in the sample to be x, we can calculate the number of moles of carbon as follows:

4 moles of carbon / 1 mole of nickel tetracarbonyl = 4x moles of carbon / x moles of nickel tetracarbonyl

Therefore, the number of moles of carbon in the sample is 4x. The number of significant digits in the answer will depend on the number of significant digits in the measurement of the number of moles of nickel. If the measurement has, for example, 3 significant digits, then the answer for the number of moles of carbon will also have 3 significant digits.

Learn more about moles at https://brainly.com/question/29367909

#SPJ11

One thing that would be the symptoms for an air-cooled condenser where the air leaving the condenser is hitting a barrier and recirculating is: that there is less heat transfer from the refrigerant to the surrounding environment. Hence this will cause heat to accumulate in the condenser, making the cooling system inefficient.

A condenser is a heat transfer used in heat transfer systems to cool a gaseous component and condense it into a liquid condition. The latent heat is released by the material and redistributed to the surrounding environment as a result.

The condenser's function is to accept high-pressure gas from the compressor and convert it to liquid. It does this by heat transfer or the notion that heat always moves from a warmer to a colder substance.

The condenser coil, evaporator, expansion valve, and compressor are the components. Each is critical to the overall performance of your unit.

Learn mroe about Condenser:
https://brainly.com/question/15563071
#SPJ1

Answer:

Find It Myself, Ask the Community, Get Live Help

Explanation:

The three main options for Microsoft users are Find It Myself, Ask the Community, Get Live Help. The first of which is finding it yourself through the search menu or help guidelines provided by Microsoft in all of their operating systems. Secondly, would be asking the community through search engines such as Google or through Microsoft help forums. Lastly, would be getting live help since Microsoft opertaing systems have a remote desktop feature that allows you to connect to another IT professional from a distance, or you can simply contact an IT professional to visit you in person for technical assistance.

Answer:

Atom, Sub atomic particle, compound, molecule

Answer:

40.34 g

Explanation:

First, we divide the heat to release by the heat of combustion to obtain the required moles of compound:

541.20 kJ/(1160.00 kJ/mol) = 0.4665 mol

So, we have to burn approximately 0.47 mol of the compound. We convert the moles to mass in grams by using the molar mass:

mass = molar mass x moles = 86.47 g/mol x 0.4665 mol = 40.34 g

Therefore, you must burn 40.34 grams of the compound to release 541.20 kJ of heat.

Answer:

c. The rusting of the joints of a metal children’s swing set.

Explanation:

By definition, chemical property describes the ability of a substance to undergo a specific chemical change.

In the definition above, the key words are; "Chemical change".

Generally, chemical changes are irreversible. This means we just have t observe the options and pick the one that contains an irreversible change.

Upon doing ths, the correct option is;

c. The rusting of the joints of a metal children’s swing set.

This is because rusting is a chemical change and is irreversible.

Radiocarbon dating, also known as carbon-14 dating, is a method used to determine the age of organic materials. It is based on the radioactive decay of the isotope carbon-14 (14C).

Living organisms constantly absorb carbon, including a small amount of carbon-14, from the atmosphere. When an organism dies, it no longer takes in carbon-14, and the existing carbon-14 begins to decay at a known rate. By measuring the ratio of carbon-14 to stable carbon isotopes (carbon-12 and carbon-13) in a sample, scientists can estimate the time that has elapsed since the organism's death. Radiocarbon dating is effective for dating materials up to about 50,000 years old.

Therefore, both radiocarbon dating and radiopotassium dating rely on the principles of radioactive decay. The decay rates of the isotopes used in these methods are well-established and constant, allowing for accurate age determinations.

For more details regarding radiopotassium dating methods, visit:

https://brainly.com/question/32267082

#SPJ4

Answer:

convection within Earth’s interior

Explanation:

Complete question

Name this event

Solution

During the convection within Earth’s interior , the earth's core undergo convection leading to turbulent dynamic that further leads to changing of magnetic field.

Due to movement of core material, there is interaction between the  mantle convection and plate motions.