Which one is better!!!!!!!!!????????

Silver or Ag is the transition element present in period 5 of the periodic table.

Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.

It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.

Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.

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Answer:

Group 11

Explanation:

Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).

Answer:

silver, chromium and copper are metal type of element

Answer:

A pressure cooker looks like a regular pot but has a modified lid that locks on over a rubber gasket to create a seal. The cooker works by raising the temperature of boiling water, thereby speeding up the time it takes to boil, braise, or steam. To use a pressure cooker, you put the food in the pot with some liquid-usually a minimum of 2 cups to build up sufficient steam pressure. Once the lid is locked in place and the cooker is set on high heat, steam develops in the pot and can’t escape. The trapped steam increases the atmospheric pressure inside the cooker by 15 pounds per square inch (psi), or 15 pounds above normal sea-level pressure. At that pressure, the boiling point of water is increased from 212°F to 250°F. This higher temperature is what cooks food faster. Once the cooker has reached full pressure, usually indicated by a gauge or pop-up rod on the lid, a release valve opens, letting out steam in a regulated flow to maintain a constant temperature inside the pot.

Explanation:

Answer:

A

Explanation:

The substance is a gas because the particles far randomly arranged and far apart from each other. This happens because when a substance is a gas, particles have weak attraction to each but a lot more kinetic energy which means the they move around all the time spreading out to fill the container. If it was a solid, then all the particles would be very close together and have a fixed position and if it was a liquid then the particles would be fairly close and moving around each other but as we can see in the diagram, all the particles are far apart confirming that it is a gas.

Answer:

the answer is A beacause the other person is right :)

Explanation:

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The theoretical yield of sodium chloride when 8.3 g of sodium react with 4.5 g of chlorine is 3.30 g

We'll begin calculating the masses of Na and Cl that reacted and the mass of NaCl produced from the balanced equation.

Molar mass of Na = 23 g/mol

Mass of Na from the balanced equation = 2 × 23 = 46 g

Molar mass of Cl₂ = 2 × 35.5 = 71 g/mol

Mass of Cl₂ from the balanced equation = 1 × 71 = 71 g

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mass of NaCl from the balanced equation = 2 × 58.5 = 117 g

SUMMARY

From the balanced equation above,

46 g of Na reacted with 71 g of Cl₂ to produce 117 g of NaCl

From the balanced equation above,

46 g of Na reacted with 71 g of Cl₂

Therefore,

8.3 g of Na will react with = (8.3 × 71)/46 = 12.81 g of Cl₂

From the calculation made above, we can see that a higher amount (i.e 12.81 g) of Cl₂ than what was given (i.e 4.5 g) is needed to react completely with 8.3 g of Na.

Therefore, Cl₂ is the limiting reactant and Na is the excess reactant

From the balanced equation above,

71 g of Cl₂ reacted to produce 117 g of NaCl.

Therefore,

4.5 g of Cl₂ will react to produce = (4.5 × 117)/71 = 3.30 g of NaCl

Thus, the theoretical yield of NaCl produced is 3.30 g

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Answer:

The correct answer is 7.4 g NaCl

Explanation:

The amount, in grams, of water, that the student originally started with would be 252 g

From the balanced equation of the reaction, the ratio of H2O to H2 is 1:1. Thus for every 1 mole of water that is separated, 1 mole of H2 is produced.

Recall that: mole = mass/molar mass

Mole of 28.0 g H2 produced = 28/2

                                              = 14 moles

Equivalent mole of H2O would, therefore, be 14 moles.

Mass of 14 moles H2O = mole x molar mass

                                      = 14 x 18

                                      = 252 g

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Answer:

Hypertension stage 1 is 130-139 mm of HG

inherited traits are passed from parent to offspring according to the rules of Mendelian genetics. Most traits are not strictly determined by genes, but rather are influenced by both genes and environment

Because it has less surface area. This can be applied to something like cooking potatoes. Cooking a larger potato will take longer than a small potato.

Explanation:

Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.

Answer:

Pretend you are a TV producer. Think of ideas for new TV shows. Your objective is to create ideas that will be successful, regardless of whether this is quality programming or not. Think of an idea of a copy. Explain the basics of what this show will be like and what show it is copying. Explain why you feel this show will be popular. Think of an idea of a spin-off. Explain the basics of what this show will be like and what show it is spinning off from. Explain why you feel this show will be popular. Think of an idea for a TV show that falls into one of the genre categories listed in the genre chart. Describe the basics of the show and how it falls under the genre’s expectations for characters, plots, and aesthetics. Explain why you feel this show will be popular.

Answer:

p=F/A.Explanation:

H2O is composed of two hydrogen atoms and one oxygen atom. The central oxygen atom is sp3 hybridized.

H2O is composed of two hydrogen atoms and one oxygen atom. The oxygen atom is bonded to the two hydrogen atoms at a dihedral angle of 104°. There are two lone pairs on the oxygen atom. The molecule has a bent geometry.

The structure of H2O is shown in the image attached to this answer. The central oxygen atom is sp3 hybridized and the shape of the molecule is based on a tetrahedron owing to its electron pair geometry.

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Answer:In a metal, atoms readily lose electrons to form positive ions (cations). These ions are surrounded by delocalized electrons, which are responsible for conductivity.

Explanation:

Due to the structure of ionic compounds, in a crystal of an ionic compound, each cation is surrounded by a number of oppositely-charged anions.

Ionic compounds are compounds that are composed of oppositely charged ions held together by strong electrostatic forces of attraction.

The ions present in an ionic compound are the positively-charged ions known as cations and the negatively-charged ions known as anions.

Each of the oppositely-charged ions are attracted to each other.

Therefore, in a crystal of an ionic compound, each cation is surrounded by a number of oppositely-charged anions.

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Answer:

[tex]\implies \sf D = \dfrac{PM}{RT}[/tex]

[tex]\implies \sf 3.35= \dfrac{1 \times M}{ \frac{1}{12} \times 298}[/tex]

[tex]\implies \sf 3.35= \dfrac{12\times M}{ 298}[/tex]

[tex]\implies \sf 3.35 \times 298= 12\times M[/tex]

[tex]\implies \sf 998.3= 12\times M[/tex]

[tex]\implies \sf M = \dfrac{998.3}{12} [/tex]

[tex]\implies \bf M = 83.1917 \: \frac{g}{mol} [/tex]

Answer:

Unlike isopropanol, hydrogen peroxide is not a type of alcohol. You might recognize its chemical formula, H2O2, as being similar to that of water (H2O). The difference is that hydrogen peroxide has two oxygen atoms instead of one. That one extra oxygen atom makes it a strong oxidizer.

Answer:

Soap is an excellent cleanser because of its ability to act as an emulsifying agent. An emulsifier is capable of dispersing one liquid into another immiscible liquid. This means that while oil (which attracts dirt) doesn't naturally mix with water, soap can suspend oil/dirt in such a way that it can be removed.

Soap acts as a cleaner because of its ability to act as an emulsifying agent. A soap molecule has a polar head and a nonpolar tail. Soap consists of a carbon chain where one end attracts oil and the other attracts water.  

Most of dirt can be described as oily in nature as oil does not dissolve in water. The molecule of soap consists of sodium salts of long-chain carboxylic acids. In soaps, the chain of carbon atoms dissolves in the oil, and the ionic or polar end of the soap molecule dissolves in water.

The soap molecules produce structures known as micelles. In micelles, one end faces the oil droplet, and the other end which is ionic in nature faces outside. Therefore, soap can form an emulsion in water and supports in dissolving the dirt when we wash our clothes.

Soap can be described as a kind of molecule in which both ends have different properties. The hydrophilic end dissolves water and is attracted to it whereas the hydrophobic end is dissolved in hydrocarbons and is water repulsive in nature.

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Answer:

17 g/Mol

Explanation:

To determine the molar mass of any compound, you have to add up the molar masses of every atom that make up the respective compound. In this case NH3 equals one nitrogen atom and three hydrogen atoms.

What does that mean? Ammonia's molar mass will be the sum of the molar mass of one nitrogen atom and 3 times the molar mass of a hydrogen atom.

Peroindic table:

N=14.0067 g/mol.

H=1.00794 g/mol

Answer:

True

ANTI MEANS AGAINST

Explanation:

Answer:

B. Biosphere

Explanation:

The digestive system is made up of the gastrointestinal tract—also called the GI tract or digestive tract—and the liver, pancreas, and gallbladder. The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.

The small intestine has three parts. The first part is called the duodenum. The jejunum is in the middle and the ileum is at the end. The large intestine includes the appendix, cecum, colon, and rectum. The appendix is a finger-shaped pouch attached to the cecum. The cecum is the first part of the large intestine. The colon is next. The rectum is the end of the large intestine.

Digestion is important because your body needs nutrients from food and drink to work properly and stay healthy. Proteins, fats, carbohydrates, vitamins NIH external link, minerals NIH external link, and water are nutrients. Your digestive system breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair.

Each part of your digestive system helps to move food and liquid through your GI tract, break food and liquid into smaller parts, or both. Once foods are broken into small enough parts, your body can absorb and move the nutrients to where they are needed. Your large intestine absorbs water, and the waste products of digestion become stool. Nerves and hormones help control the digestive process.

C

R. F. M (Relative Formula Mass) of C=12

12g of C=1 mole

1.39g of C=(1*1.39)/12

=0.1158 moles

Answer:

the rule is V1/T1= V2/T2

so we convert the T1 from °c to kelvin

78+273.15= 351.15 k

1.60/351.15 = 0.425/T2

4.55 ×10-³ = 0.425/T2

then T2 = 93.40 kelvin

hence, we should decrease the temperature

Answer:

Conversion of energy

Explanation:

Shaking the sand is a form of kinetic energy. The friction of the sand particles rubbing against each other converts the kinetic energy to heat energy. Some of the kinetic energy also converts into the energy of sound waves, which you can hear while you shake the sand.

pH = pKa + log [NaAc]/[HAc]

4.140 = 4.74 + log x

log x = -0.60

x = [NaAc]/[HAc] = 0.25

moles HAc = 1.50 L x 0.287 mol/L = 0.431 moles

moles NaAc = 0.25 x 0.431 = 0.1078 moles NaAc

grams NaAc = 0.108 x 80 g/mole = 8.64 grams

Answer: DNA sequencing methods employ chain termination nucleotides. Furthermore, if two chain-terminating nucleotides are employed in the same well, determining which strand is ended by which dideoxynucleotide will be impossible.

(its my own words, but i did search it to get this answer, hope it helps!)

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Answer:

Accuracy of a measured value refers to how close a measurement is to the correct value. The uncertainty in a measurement is an estimate of the amount by which the measurement result may differ from this value. Precision of measured values refers to how close the agreement is between repeated measurements.

Explanation: