If a researcher has used 0.500 g of sodium phosphate (in the Na2HPO4 form) to form MAP and then measured their product collected on a piece of filter paper (measured before 1.015 g and after 1.685 g), what was the % yield for the product?

The synthesis of ketone 2 heptanone form the acetylene as:

HC ≡ CH + NaNH₂  + C₅H₁₁ ----->  HC ≡ C - (CH₂)₄- CH₃

HC ≡ C - (CH₂)₄- CH₃ + H₂O + H₂SO₄ --->  H₃C - CO -  (CH₂)₄- CH₃

The 2 heptanone is from the ketone family. the 2 heptanone is used as contributing to the odor of the number of dairy products, including condensed milk and the cheddar cheese. the synthesis of 2 heptanone from the acetylene is given as :

HC ≡ CH + NaNH₂  + C₅H₁₁ ----->  HC ≡ C - (CH₂)₄- CH₃

   acetylene

HC ≡ C - (CH₂)₄- CH₃ + H₂O + H₂SO₄ --->  H₃C - CO -  (CH₂)₄- CH₃

                                                                               2- heptanon

Thus, the above reaction are the formation of heptanone from acetylene.

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When the molecules of water vapor present in the air come into touch with anything cool, including such the exterior of a cold cup they slow down and even get closer together.

Condensation is indeed the reverse of vaporization in that it changes the state of matter from either the gas phase to the liquid phase. The water cycle is the most commonly used term.

Deposition is a transformation that occurs when a gaseous phase immediately transitions into a solid phase. When the molecules of water vapor present in the air come into touch with anything cool, including such the exterior of a cold cup they slow down and even get closer together.

Therefore, when the molecules of water vapor present in the air come into touch with anything cool, including such the exterior of a cold cup they slow down and even get closer together.

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Your question is incomplete but most probably your full question was,

What causes condensation on a cup of ice water?

Answer:

C. size and shape

Explanation:

Physical properties such as size, shape, color, density, magnetism or the

ability to sink or float can be used to separate the substances in a mixture..

Filtration is when matter is passed through a filter and the larger particles

are separated out. Magnets can be used to separate magnetic matter from

non-magnetic matter in a mixture. Objects that float when placed in water

can be separated from those that don’t by placing the mixture in water.

hope you can read it. hope it's right too :).

All the best.

I think the lake because of how heat is transferred or something. Just check out the first law of thermodynamics.

Answer:

the woman

Explanation:

Answer:

575 g

Explanation:

1 kg of sodium hydroxide is 1000/40=25 mol.

So 25 mol of sodium will be needed.

25 mol of sodium is 575 g.

According to the stoichiometry of the given chemical equation, 575 g s of sodium would be needed to produce 1.00 kg of sodium hydroxide.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

46 g sodium gives 80 g sodium hydroxide, thus 1000 g sodium hydroxide requires 46×1000/80=575 g sodium.

Thus, 575 g s of sodium would be needed to produce 1.00 kg of sodium hydroxide.

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According to law of conservation of mass and stoichiometry, 89.4 g of water initially reacted to produce 10 g hydrogen and 79.4 g oxygen.

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.

According to the concept of law of conservation of mass, mass of reactants is equal to that of products.

So for  the above reaction, mass of water will be equal to the sum of masses of hydrogen and oxygen.

The sum of mass of oxygen and hydrogen = mass of water

That is, 79.4+10=89.4 g of water.

Hence, the initial mass of water reacted is 89.4 g to yield 10 g hydrogen and 79.4 g oxygen.

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Answer:

The boiling point of NaBr is higher than that of Na2S

Explanation:

Bromine has higher electronegativity as compared to the sulphur. The ionic strength of the bond formed with Sodium is higher in the NaBr compound. The higher the ionic bond strength the higher will be the boiling point

Also the size of bromine is large as compared to that of sulphur. Large molecules consists of more electron and hence they create der Waals attractive forces due to which the boiling point of compound increases.

Hence, the boiling point of NaBr is higher than that of Na2S

1. The number of mole in 0.293 Kg of Pb is 1.42 mole

2. The number of atom in 0.293 Kg of Pb is 8.55×10²³ atoms

1. How to determine the number of mole

The numbe of mole in the 0.293 Kg of Pb can be obtained as follow:

Mole = mass / molar mass

Number of mole of = 293 / 207

Number of mole = 1.42 mole

Thus, the number of mole is 1.42 mole

2. How to determine the number of atoms

The number of atoms can be obtained as follow:

From Avogadro's hypothesis,

1 mole of Pb = 6.02×10²³ atoms

Therefore,

1.42 mole of Pb = (1.42 mole × 6.02×10²³ atoms) / 1 mole

1.42 mole of Pb = 8.55×10²³ atoms

Thus, the number of atoms is 8.55×10²³ atoms

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Answer:

Sodium.  

Explanation:

Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na.

Answer:

sodium

atomic mass 22.99

atomic number 11

period 3 group 1 1a

sodium is also an Alkali metal

Explanation:

I have a periodic table on my computer I hope I helped

The element defined by the following information: p = 20 n° = 20 e- = 20 is argon. The correct answer is option b.

An atom is the smallest constituent unit of ordinary matter that has the chemical properties of an element. An atom consists of a central nucleus, which is made up of protons and neutrons, as well as electrons that orbit the nucleus.

Every electron in an atom has a negative charge, and protons, which are situated in the nucleus, have a positive charge. A neutrally charged atom has the same number of protons as it does electrons. The atomic number is the number of protons in the nucleus of an atom.

The number of electrons in a neutral atom is the same as the number of protons. For instance, if an element has an atomic number of 6, it indicates that the nucleus of each atom contains six protons. All atoms of the same element have the same atomic number.

Argon is a chemical element with the symbol Ar and atomic number 18. It is the third most abundant gas in the Earth's atmosphere, accounting for 0.934 percent of the atmosphere's volume.

Argon is colorless, odorless, and tasteless, and it is used in a variety of applications such as welding and lighting. Argon's atomic number is 18, indicating that it has 18 protons in its nucleus.

Argon has 18 electrons orbiting the nucleus, with the same number of electrons as protons. Argon is a member of the noble gas group, which is a group of elements that have eight electrons in their outermost electron shell.

The correct answer is option b.

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Answer:

unit formula??

Explanation:

Answer:

its actually supposed to be 27 days

one substance becomes two new substances

2 physical changes:

1. Pounding it into a block

2. Melting it into liquid

2 chemical changes:

1. Combining it with another metal to find a metallic alloy

2. Testing the flammibility of the metal

Answer:

Explanation:

To identify the unknown metal, the industrial chemist can change its physical and chemical properties. Here are two ways the metal can be changed physically:

1. Changing the shape or form: The chemist can melt the metal and cast it into different shapes, such as rods, sheets, or wires. By observing how the metal behaves during melting and casting, the chemist can gather information about its melting point, malleability, and ductility. These physical properties can help narrow down the possible identity of the metal.

2. Changing the size or surface area: The chemist can grind or cut the metal into smaller pieces or increase its surface area by creating a powder or filing it down. Changing the size or surface area exposes more of the metal's surface to react with other substances. This can provide insights into the metal's reactivity and susceptibility to corrosion.

Now, let's explore two ways the metal can be changed chemically:

1. Reacting with acids: The chemist can test the metal's reactivity by exposing it to different acids, such as hydrochloric acid or sulfuric acid. By observing any chemical reactions, such as effervescence (formation of gas bubbles) or the production of salts, the chemist can gain information about the metal's reactivity and its position in the reactivity series.

2. Oxidation-reduction reactions: The chemist can subject the metal to oxidation-reduction reactions. For example, they can react the metal with oxygen to form an oxide or with another compound to displace a less reactive metal. These reactions can provide valuable clues about the metal's reactivity and its ability to gain or lose electrons.

It's important to note that these are just a few methods the industrial chemist could use to identify the unknown metal. Other techniques, such as spectroscopy or x-ray diffraction, may also be employed depending on the specific circumstances.

Answer:

amino group

Explanation:

There are twenty (20) amino acids in nature. Generally, each amino acid is structurally made up of a central carbon atom called alpha carbon attached to a hydrogen, carboxylic acid group (-COOH) and an amine group (-NH2). However, one particular amino acid called PROLINE posseses an exception to this.

Proline, which is the only cyclic amino acid, is also the only amino acid that forms a secondary amine group i.e. loss of hydrogen atoms in its amine group when in a protein structure. This means that when in a protein, PROLINE does not have an AMINE GROUP.

Correct option is B, In the given reaction, Jason should place two of them as reactants.

Let's write the reaction down in chemical symbols to make it easier to understand and to have a clearer picture of it.

Reaction 1

N₂(g) + O₂(g) → 2NO

Reaction 2

2 NO(g) + O₂(g) → 2NO₂(g)

overall reaction;

N₂(g) + 2O₂(g) → 2NO₂(g)

As a result, it is clear that there are two simple reactions involved in the overall reaction. Keep in mind that the total reaction in a series of nonelementary reactions is the sum of all the individual stages. Only when two species are on opposing sides of the reaction equation can they cancel one another out.

In this instance, oxygen is present on the reactants side in both reaction equations; as a result, the overall reaction equation also calls for oxygen to be present on the reactants side with the appropriate stoichiometric coefficient to display the amount of oxygen moles involved.

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Complete Question -

Jason combines the two intermediate steps shown.

2 equations. First: upper N subscript 2 (g) plus upper O subscript 2 (g) right arrow 2 upper N upper O (g). Second: 2 upper N upper O (g) plus upper O subscript 2 (g) right arrow 2 upper N upper O subscript 2 (g).

Which best describes what Jason should do with the oxygen molecules?

Place two of them as products.

Place two of them as reactants.

Cancel them out because there is one in each equation.

Double them because there is one in each equation.

Answer:

C)Mixtured

Explanation:

I know the answer

Answer:

The pH of a solution with a (H+] = 0.80 M is \(9.6 e^{-2}\)

Explanation:

As we know

pH = -[log H+]

Substituting the value of H+ ion concentration in the above equation, we get -

pH = -log [0.80]

pH \(= -[-0.096] = 0.096 = 9.6 e^{-2}\)

Ignoring the effects of recoil, the minimum energy must the photon have for this reaction to occur is 10 MeV

The nuclear reaction is (28,14)Si+ γ---(24,12)Si+He(2,4)

The binding energy that holds the nuclide is

E=Δmc^2

where Δm is the mass defect

Δm=27.976927+0-[23.985042+4.002602]

Δm=-0.010717x1.66054x10^-27 kg

So the minimum energy of photon should be

ΔE=Δmc^2=0.017796x10^-27x(3x10^8)^2/1.6x10^-19 V

ΔE= 10 MeV

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Answer:

D. The table pushes up on the vase with the same amount of force as gravity pulling it down

Explanation:

The chemical equation for the ionization of triprotic acid H₃PO₄ in water: H₃PO₄ + H₂O ↔ H₃O⁺ + H₂PO₄⁻.

The equation above shows that H₃PO₄ reacts with water (H₂O) to form hydronium ions (H₃O⁺) and the dihydrogen phosphate ion (H₂PO₄⁻). This reaction occurs in three stages, as H₃PO₄ is a triprotic acid, meaning it can donate three hydrogen ions (protons) to water molecules.

The ionization of H₃PO₄ occurs in a step-wise manner:

1. The first proton is donated to a water molecule, forming H₃O⁺ and the hydrogen phosphate ion (HPO₄²⁻):
H₃PO₄ + H₂O ↔ H₃O⁺ + HPO₄²⁻

2. The second proton is donated to another water molecule, forming H₃O⁺ and the phosphate ion (PO₄³⁻):
HPO₄²⁻ + H₂O ↔ H₃O⁺ + PO₄³⁻

3. The third proton is donated to a third water molecule, forming H₃O⁺ and another hydrogen phosphate ion:
PO₄³⁻ + H₂O ↔ H₃O⁺ + H₂PO₄⁻

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Answer:

C

Explanation:

The ball is undergoing a gravitational potential to kinetic energy transformation. When the ball is at the top of the slope, it has the potential to be moved down by gravity, hence the name. When it's rolling down the slope, it turns to kinetic energy, which is when something moves.

Answer: d)

Explanation: Sulfuric acid on reaction with sugar leads to the formation of a lot of heat indicating it to be an exothermic reaction, a large quantity of steam , a black carbon containing tube like structure pushing itself out of the beaker.It is demonstrated as:

C12H22O11 (sugar) + H2SO4 (sulfuric acid) → 12 C (carbon) + 11 H2O (water) + mixture water and acid

The process is actually the dehydration of sugar. It can be demonstrated by simply adding table sugar to a beaker and adding sulfuric acid to it. The process is followed by the release of heat, oxide fumes, and a black tube structure as mentioned. The white sugar on addition of this sulfuric acid get dehydrated and pushes itself outwards by forming a black carbon containing tube like structure.

Since the process is irreversible is nature therefore is a chemical change.

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Hi im not sure but there you go . hope its helpful and good luck:)

Answer:Ratio of proton to electron mass: 1,836.2.

Explanation:

That the pressure doubles when the gas's volume is cut in half.

If gas volume and temperature are maintained constant, the formula demonstrates that pressure and volume are inversely proportional.

This implies that if volume decreases, pressure must increase. This implies that if pressure doubles, volume must be half, and if pressure is halved, volume must be doubled in order to maintain the K value.

If the volume is doubled and the pressure is tripled, the effect on the temperature will be 3 2 = 6 times. This is because for perfect gases, the temperature is directly related to both the volume and the pressure.

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Answer: 31.5L

Explanation:

Ideal gas law is valid only for ideal gas not for vanderwaal gas. The equation used is PV=nRT. Therefore the volume of oxygen gas is 31.5L.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of oxygen gas =78.5 kPa=78,500=0.7747atm

V= volume of oxygen gas=?

n =number of moles of oxygen gas = given mass÷ Molar mass

                                                          = 32.0g÷ 32

                                                          =1 mole

T =temperature of oxygen gas=298K

R = Gas constant = 0.0821 L.atm/K.mol

0.7747atm×V=1 mole×0.0821×298K

V=31.5L

Therefore the volume of oxygen gas is 31.5L.

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Answer:

umm well when a reaction happens it's chemical and when you put like salt and pepper or cookies and crackers its physical

Explanation:

Answer:

When ΔS > 0 and ΔH < 0, the process is always spontaneous as written. When ΔS < 0 and ΔH > 0, the process is never spontaneous, but the reverse process is always spontaneous. When ΔS > 0 and ΔH > 0, the process will be spontaneous at

Explanation:

What are the best conditions to lead towards a spontaneous reaction? high negative enthalpy, high temp, high positive entropy. Your enthalpy is high and negative but your entropy is also negative.