Which of the following is not radiation ? A. baking in a metal pan in the oven , B. heat from a fire , C. microwaving food , or D. suns rays

Answer:

it's food engineering obviously

The correct answer is B. Food Engineering, which includes the design and operation of food production systems, from processing plants to distribution networks, ensuring food safety and quality.

The field that primarily focuses on the production, preservation, and distribution of food to meet society's demands is Food Engineering. This field involves numerous aspects including the design of processing plants, choosing the right equipment for food preservation, and ensuring that products reach consumers in safe, sustainable, and efficient ways. Moreover, food engineers work on enhancing food quality, nutritional value, and variety to suit the diversified dietary needs of a growing population.

While Genetic Engineering does play a significant role in the development of crops with improved yield, resistance to pests, and adaptability to different environmental conditions, it is a subset of the broader biotechnology field with broader applications, including medicine. On the other hand, Biomedical and Chemical Engineering excel in areas like healthcare and the formulation of chemicals, materials, and pharmaceuticals, respectively, rather than focusing explicitly on food production.

Biosystems Engineering, which includes aspects of Agricultural and Food Engineering, is also integral to achieving these goals. It involves the advancement of engineering solutions to create a sustainable world with adequate food, water, and energy, while conserving the environment.

Answer:

Electric cars are much faster than their combustion counterparts.

Explanation:

This is because electric cars can produce high torque from the get go, whereas Combustion engines reach the torque after gaining speed

Answer:

first one

Explanation:

Answer:

Genes are segments of DNA that are located on the chromosomes of each cell.

Explanation:

Chromosomes are basically tightly bundled thingies containing genes, DNA, whatever. Phenotype and genotype have nothing to do with chromosomes, that's just how WE describe them.

Answer:

the first one

Explanation:

Answer: B

Earth completes a full spin on its axis once every 24 hours.

Explanation:

Answer:

3 different elements

Explanation:

There are 3 different elements in silver nitrate (AgNO3). It also contains 5 atoms. Silver (1 atom), Nitrogen (1) and Oxygen (3). Nitrogen and Oxygen together to form an ion called nitrate (NO3). The ionic form of silver (Ag+) combines with Nitrate (NO3) to form silver nitrate (AgNO3).

Final answer:

Silver nitrate, or [tex]AgNO_3[/tex], consists of three different elements: silver (Ag), nitrogen (N), and oxygen (O). These elements combine uniquely, with one silver atom, one nitrogen atom, and three oxygen atoms, to form a compound that is commonly involved in ionic reactions in stoichiometry.

Explanation:

The formula [tex]AgNO_3[/tex] represents silver nitrate, which is a compound composed of three different elements. These elements are silver (Ag), nitrogen (N), and oxygen (O). In the formula, Ag represents a single atom of silver, N represents a single atom of nitrogen, and the subscript '3' after the letter O indicates that there are three atoms of oxygen involved in the compound.

When exploring chemical reactions involving silver nitrate, it's important to recognize its role in reaction stoichiometry and the resulting products. For example, when silver nitrate reacts with sodium carbonate ([tex]Na_{2}CO_3[/tex]), the resulting products are sodium nitrate and silver carbonate. This reaction can be written as: [tex]Na_{2}CO_3[/tex](aq) + [tex]2AgNO_3[/tex](aq) → [tex]2NaNO_3[/tex](aq) + [tex]Ag_{2}CO_{3[/tex](s), where 'aq' stands for aqueous solution and 's' for a solid. This illustrates the exchange of ions between the reactants to form the products, a common theme in chemical reactions involving ionic compounds like [tex]AgNO_{3[/tex].

Understanding the fundamentals of such reactions, including the role of each element and their combinations, significantly aids in comprehending overall chemical processes and the stoichiometry of reactions. In the case of [tex]AgNO_3[/tex], each formula unit contributes one silver ion ([tex]Ag+[/tex]), one nitrate ion ([tex]NO_3-[/tex]), and hence offers a gateway to analyzing various chemical equations where silver nitrate is involved.

Answer:

A) Earth's atmosphere

B) initial thrust of take-off

C) angle of approach upon landing

D) gravitational potential energy

So it would be D. Gravitational potential energy As the shuttle prepares to return to Earth it reduces its speed so that gravity pulls it out of its orbit and toward Earth. As it approaches the earth the gravitational potential energy is converted to kinetic energy. The drag of Earth's atmosphere slows the shuttle's descent and causes some kinetic energy to convert to heat energy.

Explanation:

A couple of things, if the shuttle burned all of it's fuel before entering Earth's atmosphere then that means that the shuttle was accelerating towards Earth until it ran out of fuel. At that point, there is little to no air resistance (friction) by the lack of an atmosphere so it keeps accelerating due to Earth's gravitational force. The closer the shuttle gets to Earth the stronger the gravitational pull the shuttle experiences.

Note that, once the shuttle reaches Earth's atmosphere it will cause significant amount of friction and thus will cause the shuttle to slow down.

Answer:

The answer is D

Explanation:

Free points :D

Answer:

THE ANSWER IS ELEMENT I hope i helped you

Explanation:

According to the concept of Avogadro's number there are 6.023×10²³ elementary entities in an element which when multiplied by atomic mass gives the  mass of 1 mole of an element.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.

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Answer:

1. molar mass of h2co3: 62.03 g

2. total molar mass for hydrogen atoms: 2.02 g

3. total molar mass for carbon atoms: 12.01 g

4. total molar mass for oxygen atoms: 48.00 g

5. hydrogen percent composition: 3.3%

6. oxygen percent composition: 77.4%

Explanation:

1. 1.01+1.01+12.01+16.00+16.00+16.00= 62.03

2. 1.01×2= 2.02

3. 12.01×1= 12.01

4. 16.00×3= 48.00

5. (2.02/62.03)×100= 3.3%

6. (48.00/62.03)×100= 77.4%

The molar mass of H2CO3 is 62.03 g/mol. The hydrogen percent composition in H2CO3 is 3.25% and the oxygen percent composition is 77.36%.

The molar mass of H2CO3 can be calculated by adding the molar masses of hydrogen (H), carbon (C), and oxygen (O) in the compound. The molar mass of hydrogen is 1.008 g/mol, the molar mass of carbon is 12.01 g/mol, and the molar mass of oxygen is 16.00 g/mol. Therefore, the molar mass of H2CO3 is: (2 x 1.008) + 12.01 + (3 x 16.00) = 62.03 g/mol.

The total molar mass for hydrogen atoms in H2CO3 is 2 x 1.008 = 2.016 g/mol.

The total molar mass for carbon atoms in H2CO3 is 12.01 g/mol.

The total molar mass for oxygen atoms in H2CO3 is 3 x 16.00 = 48.00 g/mol.

The hydrogen percent composition in H2CO3 can be calculated by dividing the molar mass of hydrogen by the molar mass of H2CO3 and multiplying by 100. Therefore, the hydrogen percent composition in H2CO3 is: (2.016 / 62.03) x 100 = 3.25%.

The oxygen percent composition in H2CO3 can be calculated by dividing the molar mass of oxygen by the molar mass of H2CO3 and multiplying by 100. Therefore, the oxygen percent composition in H2CO3 is: (48.00 / 62.03) x 100 = 77.36%.

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Answer:

Imagine filling a rigid container attached to a pressure gauge with gas and then sealing the container so that no gas may escape. If the container is cooled, the gas inside likewise gets colder and its pressure is observed to decrease. Since the container is rigid and tightly sealed, both the volume and number of moles of gas remain constant. If we heat the sphere, the gas inside gets hotter and the pressure increases. This relationship between temperature and pressure is observed for any sample of gas confined to a constant volume. An example of experimental pressure-temperature data is shown for a sample of air under these conditions in Figure 3. We find that temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant); if the temperature on the kelvin scale increases by a certain factor, the gas pressure increases by the same factor.

In most usual conditions (for instance at standard temperature and pressure), most real gases behave qualitatively like an ideal gas. Many gases such as nitrogen, oxygen, hydrogen, noble gases, and some heavier gases like carbon dioxide can be treated like ideal gases within reasonable tolerances.

According to the ideal gas law, the temperature has increased slightly. Hence option b is correct.

Ideal gas law is defined as the sum of the absolute temperature of the gas and the universal gas constant is equal to the product of the pressure and volume of one gram of an ideal gas. For low temperature, high density, and extremely high pressures, ideal gas law is inapplicable since molecular size and intermolecular forces are important non these circumstances. For heavy gases and gases with significant intermolecular forces, the ideal gas law does not apply.

The number of particles is proportional to the volume at constant temperature and pressure. Raising the average force that each particle applies to the surface is another method for maintaining pressure as the volume expands. When the temperature rises, this occurs.

Thus, according to the ideal gas law, the temperature has increased slightly. Hence option b is correct.

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Answer:

The streams of both cans shoot out at the same distance.

Explanation:

The water is coming out of the holes with the same pressure of the air in the can wanting to come out.

Both cans' streams shoot out at the same distance. Because the water is leaking from the holes at the same pressure that the air in the container is trying to escape.

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Answer:

[tex]2n + 5[/tex]

Explanation:

[tex]2 \times n + 5 \\ = 2n + 5[/tex]

Hey!!!

Here's your answer

Question: 2 times n add 5

=2*n+5

=2n+5

Hope it helps...

Good luck on your assignment

Answer:

This is a tough one >_<

Explanation:

I think the answer is b.

Answer:

btc all i asked for was for u to help me

Explanation:

Answer: The correct Answer is chlorine

Explanation:

Decreasing order arrangement of the solution:

pOH = 0.5 > [OH–] = 5.62 × [tex]10^{-5}[/tex] M >  [H3O+] = 3.16 × [tex]10{^-7}[/tex]M > pH = 3.5 > pH = 0.5

An alkaline solution means some substance has been dissolved in water which makes it have a pH greater than 7.

Ranking the solution according to the decreasing order of alkalinity:

The ones that have the highest pH values will be the most alkaline (basic) and the ones with the lowest pH values will be the least alkaline (acidic).

pH = [H₃O⁺] and pH = 14 - pOH (use pOH = [OH⁻])

pOH = 0.5 > [OH–] = 5.62 × [tex]10^{-5}[/tex] M >  [H3O+] = 3.16 × [tex]10{^-7}[/tex]M > pH = 3.5 > pH = 0.5

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Answer:

Rank these solutions from the most alkaline (1) to the least alkaline (5). 

⇒ 1 pOH = 0.5 

⇒ 4 pH = 3.5 

⇒ 2 [OH–] = 5.62 × 10–5 M 

⇒ 3 [H3O+] = 3.16 × 10–7 M 

⇒ 5 pH = 0.5

Explanation:

Got it wrong to make it right! :D your welcome.

Answer:

The correct answer is "Iron and oxygen act as Fe3+ and O2− ions respectively, forming rust (Fe₂O₃) in the presence of water by the formation of an ionic bond".

Explanation:

Rust is formed when iron reacts with oxygen in the presence of water (either if the iron is submerged or exposed to moisture in the air), forming the chemical compound Fe₂O₃. The presence of water is needed for rust formation because iron and oxygen act as ions when they are exposed to water, particularly Fe3+ and O2− ions respectively. The bond formed between these two elements are ionic bonds, because it is comprised of the reaction between a metal (iron) and a non-metal (oxygen).

In periodic table, down a group, the atomic or ionic radius increases. The ion which have largest radius in halogen group is I-.

Ionic radius is the distance from the nucleus to the valence shell of the ion called its ionic radius. Ionic radius increases down a group because down a group the number of orbitals or shells increases.

Halogens are 17th group elements in periodic table. They are highly electronegative and have valency of 1. Thus forms an X-  ions by accepting an electron metals.

Among bromide, chloride, fluoride and iodide the biggest element is iodine with highest number of valence shell. Therefore, iodide ion or I- have largest radius than the other three ions.

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Among Br-, Cl-, F-, and I-, the iodide ion (I-) has the largest radius because it has additional electron shells and is placed further down the periodic table, which increases its size despite a higher nuclear charge.

The ionic radius is a measure of the size of an ion in a crystal lattice. It is influenced by the ion's electron configuration and its nuclear charge. As we move down the periodic table, the ionic radii increase due to the addition of electron shells.

When comparing the ionic radii of Br-, Cl-, F-, and I-, we need to consider that these ions are isoelectronic, meaning they all have the same number of electrons, but different nuclear charges. The size of an ion is inversely proportional to the nuclear charge; the higher the charge, the greater the pull on the electrons and the smaller the ion. Since I- is furthest down the periodic table, it has more electron shells compared to Br-, Cl-, and F-, resulting in a larger radius despite its higher nuclear charge.

Therefore, among the options given, I- (iodide ion) has the largest radius because it belongs to the fifth period in the periodic table and has additional electron shells.

Answer:

by a Factor of 10

Explanation:

Edge

The hydrogen ion concentration of these two solutions differs from each other by a factor of 10.

The amount of solute that has been dissolved in a specific volume of solvent or solution is measured by the solution's concentration. A solution that contains a significant amount of dissolved solute is said to be concentrated.

You can determine how much solute has been dissolved in the solvent by looking at the concentration of the solution. For instance, the concentration could be stated as 1 teaspoon of salt per 2 cups of water if you add 1 teaspoon to 2 cups of water.

The negative logarithm of the concentration of hydrogen ions in an aqueous solution is used to represent the relationship between the two, which is why the name pH is defined as the power of hydrogen.

Thus, the two solutions differ from each other by a factor of 10.

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Answer:

protons are positive neutron are neutral and electrons are negative.

Explanation:

Answer:

A proton is a subatomic particle, symbol p or p⁺ , with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron. Protons and neutrons, each with masses of approximately one atomic mass unit, are collectively referred to as "nucleons".

a neutron is a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

a electron is a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

Explanation:

Answer:

NDL

Explanation:

Answer:

A. H2 is the limiting reactant.

B. The greatest mole of NH3 produced is 4.6 moles

C. The excess reactant is N2 and the leftover mole is 2.4 moles

Explanation:

The balanced equation for the reaction is given below:

N2 + 3H2 —> 2NH3

To obtain the greatest amount of NH3 that can be formed from the reaction of 4.7 mol of N2 and 6.9 mol of H2, we must first determine the limiting reactant.

A. Determination of the limiting reactant.

This is illustrated below:

From the balanced equation above,

1 mole of N2 reacted with 3 moles of H2.

Therefore, 4.7 moles of N2 will react with = 4.7 x 3 = 14.1 moles of H2.

We can see from the calculations made above, that it will take a higher amount i.e 14.1 moles of H2 than 6.9 moles given to react with 4.7 moles of N2.

Therefore, H2 is the limiting reactant and N2 is the excess reactant.

B. Determination of the greatest amount of NH3 from the reaction.

The limiting reactant is always used to obtain the maximum yield of any reaction as all of it is used in the reaction. The limiting reactant for the above reaction is H2 and the greatest amount of NH3 is obtained as follow:

From the balanced equation above,

3 moles of H2 reacted to produce 2 moles of NH3.

Therefore, 6.9 moles of H2 will react to produce = (6.9 x 2)/3 = 4.6 moles of NH3.

The greatest amount of NH3 produced is 4.6 moles

C. Determination of the moles of excess reactant that is leftover after the reaction.

This is illustrated below:

From the balanced equation above,

1 mole of N2 reacted with 3 moles of H2.

Therefore, Xmol of N2 will react with 6.9 moles of H2 i.e

Xmol of N2 = 6.9/3

Xmol of N2 = 2.3 moles

Therefore, 2.3 moles N2 reacted

The leftover mole of N2 is obtained as follow:

Mole of N2 given = 4.7 moles

Mole of N2 that react = 2.3 moles

Leftover mole of N2 =.?

Leftover mole of N2 = (Mole of N2 given) – (Mole of N2 that react)

Leftover mole of N2 = 4.7 – 2.3

Leftover mole of N2 = 2.4 moles

Answer:

24 moles

Explanation:

Based on the reaction:

Sn + 2HF → SnF₂ + H₂

1 mole of Sn and 2 moles of HF produce 1 mole of both SnF₂ and H₂.

48g of H₂ -molar mass 2.0g/mol- are:

48g × (1mol / 2.0g) = 24 moles of H₂

As 1 mole of SnF₂ is produced with 1 mole of H₂ and moles of H₂ produced were 24moles, moles of SnF₂ are 24 moles, too.

Answer:

The amount of moles of CO₂ is 0.026 moles

Explanation:

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

The equation known as the ideal gas equation explains the relationship between the four variables P (Pressure), V (Volume), T (Temperature) and n (Amount of substance). The ideal gas law is expressed mathematically as:

P*V = n*R*T

where P represents the pressure of the gas, V its volume, n the number of moles of gas (which must remain constant), R the constant of the gases and T the temperature of the gas.

In this case:

Replacing:

855 mmHg*0.475 L=n*62.36367 [tex]\frac{mmHg*L}{mol*K}[/tex] *251 °K

Solving:

[tex]n=\frac{855 mmHg*0.475 L}{62.36367 \frac{mmHg*L}{mol*K} *251 K}[/tex]

n= 0.026 moles

The amount of moles of CO₂ is 0.026 moles

The correct answer is option D) Superscript 64 subscript 30 upper Z n.

The energy of the two-electron masses is converted into electromagnetic radiation. This process, known as positron annihilation, is a characteristic means of identification of positron emission.

A positron is the anti-particle of a beta particle and is emitted by a proton-rich nucleus. The collision of an electron and a positron yields two 0.511 MeV gamma rays. Positron gamma radiation can penetrate through inches of iron, concrete, wood, plastic, water, etc.

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Answer:

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

Explanation:

Answer:

Option D - 10,000 years ago in the Middle East

Answer:

The concentrations of the products and reactants do not change

Explanation:

A system is said to be in equilibrium when there is no observable change in concentration of the reactants and products with time.

However, a dynamic equilibrium occurs when the rate of the forward and backward reaction are the same. This implies that the concentration of the reactants and products do not change as long as the physical state of the system is kept constant.

Answer:

(C

Explanation:

edg 2020