Is the emission spectrum of elements composed of individually colored lines or is it a continuous blend of colors like a rainbow?

Given the equation :

CH3OH +Cl2 →← 2 CH3CL + 2OH ^-1

at equilibrium concentration, we have:

(1.5 -2x )/ 5L + (1.0 -x )/5L =2x /5L + 2x /5L

→ (1.5-2x+ 1 -x )/ 5L = 4x /5L

→(0.5 -3x)/5L = 4x/5L (5L in the Left hand side cancels 5L inthe right hand side)

→ 0.5 = 4x +3x

0.5 = 7x

x = 0.5/7

x = 0.071

( Extra note : Now lets test and see if this balances ):

LHS : (1.5 -2x )/ 5L + (1.0 -x )/5L = 0.5 -3x)/5L

= 0.5 - 3(0.071)/5

= 0.287 /5 = 0.05

RHS :4(x) /5 = 4(0.071) /5

= 0.28/5 = 0.05

at equlibrium , LHS = RHS therefore our x value is 0.07

Answer:

The number of protons in an atom define each individual element because the number of protons is the atomic number which is the defining property of an atom and never changes. The number of protons determines an atom's identity. For example, Oxygen has an atomic number of 8, so it has 8 protons, so no matter what ionic compound or molecule it's part of, every single Oxygen atom will always have 8 protons each.

Proton:

Positive

Found in Nucleus

Mass of 1 AMU

Neutron:

Neutral

Found in Nucleus

Mass of 1 AMU

Electron:

Negative

Found in orbitals

Mass of 0 AMU

Please mark Brainliest if this helped you! :)

7.296 x 102 in scientific notation 23x1011 is obtained by dividing by 3.6 x 109.

Very big or very low numbers can be written using scientific notation. Once a number within 1 and 10 has been multiplied by such a power of 10, it is then expressed in scientific notation. For instance, the scientific notation for 650,000,000 is 6.5 108.

A system of symbols and signs is used in notation to represent words, numbers, sentences, etc. The efficient communication of words, figures, and other objects is greatly aided by notation, which is frequently created for a specific purpose. Music notation is a prime example of notation.

To know more about Notation visit:

https://brainly.com/question/18073768

#SPJ1

Answer:

valence electrons

Explanation:

"The number of electrons / charge of each ion tells about the property of the rection either it is single replacement reaction or double replacement reaction."

What is replacement reaction?

Replacement reactions are extremely significant chemistry phenomena. They are employed in a variety of fields. For example, it can employ electroplating, that is reliant on replacement reaction, to keep iron objects from rusting.

To know more about replacement reactions click here.

https://brainly.com/question/15995721.

#SPJ2

The demonstration shows that steel wool burned chemically.

From the demonstration, steel wool burned chemically. The supporting evidence is:

1. Combustion: Bunsen burner flame ignited steel wool. A material combines with oxygen to produce heat, light, and gases or new compounds in combustion. Steel wool burning implies a chemical reaction.

2. Steel wool burned for 20 minutes. This prolonged burning signals a chemical process. Shape and size alterations rarely last this long.

3. Failure to Ignite: A piece of charred steel wool held in the flame again did not ignite. This implies that the initial chemical reaction that caused the steel wool to ignite was irreversible. After a chemical reaction consumes the reactants, it may not happen again without replacing them.

Learn more about combustion, here:

https://brainly.com/question/31123826

#SPJ1

The things that potatoes and bacteria have in common is that they both reproduce asexually. Thus option 4 is correct.

Reproduction is defined as the biological process that creates new individual organisms from existing ones, also referred to as "offspring"

It can also be defined as the process by which identically minded organisms make new organisms.

There are two types of reproduction.

Thus. the things that potatoes and bacteria have in common is that they both reproduce asexually. Thus option 4 is correct.

To learn more about reproduction, refer to the link below:

https://brainly.com/question/14329745

#SPJ5

1) Write the formula

2) The subscripts show us the number of each atom in the formula. In this case, we also have to make sure to count the parenthesis subscript.

There are

3 Cu

2 P

8 O

The element which is likely to have a high thermal conductivity among given options is sodium.

Thermal conductivity of any substance is define as the capability of the substance to carry heat or transfer of heat.

As we know that metals are the good conductors of heat and non-metals are bad conductors, so we exclude carbon, antimony and chlorine atom from this group as they are non-metals. And sodium atom has the thermal capability.

Hence option (4) is correct.

To know more about thermal conductivity, visit the below link:
https://brainly.com/question/11213835

Answer: Option (4) is correct

Explanation:

2 Acetyl CoA molecules are generated after glycolysis.

The metabolic process known as glycolysis transforms glucose (C6H12O6) into pyruvate (CH3COCO2H). The high-energy molecules adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide are formed using the free energy released during this process (NADH).  A series of ten enzyme-catalyzed processes is known as glycolysis.

A list of the 10 processes involved in the glycolysis pathway. An oxygen-free metabolic pathway is glycolysis (In anaerobic conditions pyruvate is converted to lactic acid). The widespread prevalence of glycolysis in different species suggests that it is an old metabolic system.   In fact, the events that constitute glycolysis and its parallel pathway, the pentose phosphate pathway, take place in the oxygen-free environment of the Archean oceans, likewise in the absence of enzymes, and are activated by metal.

To learn more about glycolysis Please click on the given link:

https://brainly.com/question/1966268

#SPJ4

If 1.90 g of silver are produced from the reaction, then 0.0176 moles of copper(II) nitrate are also produced.

A chemical reaction occurs when moving molecules hit each other, breaking their bonds and producing an exchange of atoms that form new products. Another way a chemical reaction can occur is through the vibration of substances; when they do so with sufficient energy, they can be broken down into smaller molecules.

we need to use the balanced chemical equation,

3Cu(NO3)2 + 2Al → 3Cu + 2Al(NO3)3

we can see that 3 moles of Cu(NO3)2 react with 2 moles of Al to produce 3 moles of Cu. Therefore, the molar ratio of Cu(NO3)2 to Cu is 3:3 or 1:1.

m(Ag) = 1.90 g

M(Ag) = 107.87 g/mol

n(Ag) = m(Ag) / M(Ag)

n(Ag) = 1.90 g / 107.87 g/mol

n(Ag) = 0.0176 mol

The molar ratio of Cu(NO3)2 to Cu is 1:1, the moles of Cu produced in the reaction is also 0.0176 mol. So, the number of moles of Cu(NO3)2 produced is also 0.0176 mol.

To know more about the chemical reaction visit:

https://brainly.com/question/11231920

#SPJ1

The resonance structure corresponding to the given radical is drawn and attached below.

Resonance is a concept in chemistry that describes the delocalization of electrons within a molecule or ion across two or more adjacent atoms that have the same connectivity. Resonance occurs when the electronic structure of a molecule or ion can be represented by two or more equivalent Lewis structures, or resonance structures, that differ only in the placement of electrons.

In resonance structures, the atoms are in the same positions, but the electrons are distributed differently. The actual electronic structure of the molecule or ion is considered to be an average of the resonance structures, with the electrons delocalized over the entire molecule or ion rather than localized on individual atoms.

To know more about resonance, visit:

https://brainly.com/question/29547999

#SPJ1

Approximately 17 metric tons of chlorine gas should be dissolved in 5 million liters of water to achieve a concentration of 3.4 ppm.

To determine the amount of chlorine gas that should be dissolved in 5 million liters of water to achieve a concentration of 3.4 ppm (parts per million), we need to convert the volume of water into the corresponding mass.

1 liter of water has a mass of approximately 1 kilogram, so 5 million liters of water would have a mass of 5 million kilograms (5 × 10^6 kg).

The concentration of 3.4 ppm means that there are 3.4 parts of chlorine gas for every million parts of water. Therefore, to find the amount of chlorine gas needed, we multiply the concentration by the mass of water:

Amount of chlorine gas = (3.4 ppm) × (5 × 10^6 kg) = 17 × 10^6 g = 17 metric tons.

Thus, to obtain a concentration of 3.4 ppm in 5 million liters of water, approximately 17 metric tons of chlorine gas would need to be dissolved.

You can learn more about chlorine gas at

https://brainly.com/question/30459995

#SPJ11

65 grams of oxygen is approximately equal to 2.03125 moles.

To convert 65 grams of oxygen to moles, we need to use the molar mass of oxygen (O₂), which is approximately 32.00 g/mol. Oxygen exists as a diatomic molecule (O₂), so we use the molar mass of O₂ to convert from grams to moles.

The formula for converting grams to moles is:

Moles = Mass (in grams) / Molar mass (in grams per mole)

Given:

Mass of oxygen = 65 grams

Molar mass of oxygen (O₂) = 32.00 g/mol

Moles of oxygen = 65 grams / 32.00 g/mol

Moles of oxygen ≈ 2.03125 moles

Therefore, 65 grams of oxygen is approximately equal to 2.03125 moles.

Learn more about oxygen from the link given below.

https://brainly.com/question/33311650

#SPJ2

Answer:

Nitrogen is a diatomic molecule in the VA family on the periodic table. Nitrogen has five valence electrons, so it needs three more valence electrons to complete its octet. A nitrogen atom can fill its octet by sharing three electrons with another nitrogen atom, forming three covalent bonds, a so-called triple bond.

maybe this will be helpful

mark me brainliest

Answer:

Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell. Nitrogen atoms will form three covalent bonds (also called triple covalent) between two atoms of nitrogen because each nitrogen atom needs three electrons to fill its outermost shell.

The number of electrons in an atom's outermost valence shell governs its bonding behaviour. Elements whose atoms have the same number of valence electrons are grouped together in the Periodic Table. ... To form a covalent bond, one electron from the halogen and one electron from another atom form a shared pair.

Answer:

The correct option is;

Scientist propose explanations that can be explained by examining evidence

Explanation:

A scientists makes an hypotheses based on possible natural processes to explain the origin and/or the nature of the characteristics of a natural observation. The scientist then source more data and information to put their hypotheses to test. Due to the fact that an hypotheses is based on observable  processes and/or mechanisms, the given hypotheses can be further tested by other scientists through the use of their individually sourced data. From the result of the assessment, the hypotheses can be either accepted or rejected to enable the better clarification of the hypotheses when accepted or the development of a new hypotheses when rejected.

The tensile stress required to fail a tensile coupon that has a 0.5 mm crack on one side is about 14.35 MPa.

Polymethyl methacrylate (PMMA) is a transparent thermoplastic often used as a lightweight or shatter-resistant alternative to glass. It is also used in casting, molding, and extrusion. The tensile strength of PMMA is roughly 65 MPa, but this value changes when a defect is present. The stress required to cause failure can be calculated using the single edge notch plate model to calculate the geometric factor Y.

The fracture toughness of PMMA is 1 MPa m¹/2, and the crack length is 0.5 mm. 12.5 mm is the width of the specimen.For a tensile coupon, the tensile stress required to fail it with a 0.5 mm crack on one side is calculated using the following formula:Stress = (K IC / Y √(πa)) × (b / W)where KIC is the fracture toughness, Y is the geometric factor, a is the crack length, b is the specimen width, and W is the specimen width. For a PMMA coupon with a 0.5 mm crack, a is 0.5/2 = 0.25 mm. Y = 1.12, according to the single edge notch plate model. Substituting the given values, the stress required to fail the coupon is:Stress = (1 MPa m¹/² / 1.12 √(π x 0.25 mm)) × (12.5 mm / 12.5 mm)≈ 14.35 MPa.

To know more about methacrylate visit :

https://brainly.com/question/32492486

#SPJ11

Answer: 87690.67

Explanation: I don't even know if that's correct but i tried and i got close to that answer the i looked it up to see if i did it correctly and it rounded it up to that sooooooooo.........yeah.

The theoretical yield of iron (55.845 g/mol) when 10.0 g Fe₂O₃ (159.69 g/mol) reacts with excess carbon (12.01 g/mol) is 6.99 g.

the balance equation is given as :

Fe₂O₃   +  3C     ---->    2Fe   +   3CO

the mass of Fe₂O₃  = 10 g

molar mass of Fe₂O₃  = 159.69 g / mol

the number of moles of Fe₂O₃  = mass / molar mass

                                                    = 10 / 159.69

                                                    = 0.062 mol

1 mole of Fe₂O₃  produce 2 mole of Fe

0.062 mol of Fe₂O₃  = 2 × 0.062 = 0.125 mol of Fe

mole of Fe = 0.125 mol

molar mass of Fe = 55.8 g/mol

mass of Fe = 0.125 × 55.5

                  = 6.99 g

The theoretical yield = 6.99 g

Thus, The theoretical yield of iron (55.845 g/mol) when 10.0 g Fe₂O₃ (159.69 g/mol) reacts with excess carbon (12.01 g/mol) is 6.99 g.

To learn more about theoretical yield here

https://brainly.com/question/1379589

#SPJ4

Soil and water is a suspension because it consists of larger particles suspended in the medium, which start to settle when allowed to stand. Milk is a colloid because it consists of minute particles that remain suspended in the medium.

The correct answer is (D)

The mixture of soil and water is considered to be a suspension because it is composed of minute particles suspended in the medium. Milk, on the other hand, is a colloid because it consists of larger particles suspended in the medium, which start to settle when allowed to stand.

There are a few differences between these two mixtures, but the most important one is their particle size.

A colloid is a mixture of two or more substances in which one substance is finely dispersed in the other.

The dispersed particles are usually between 1 and 1000 nanometers in size, making them too small to be seen with the eye.In contrast, a suspension is a mixture in which small particles of a solid are dispersed throughout a liquid. These particles are usually much larger than the particles in a colloid, ranging from 100 to 10,000 nanometers in size. As a result, they can be seen with the eye and will eventually settle out of the liquid if left undisturbed.

The property that best differentiates these two mixtures is their stability.

Colloids are much more stable than suspensions because the particles are smaller and more evenly dispersed throughout the medium.

They do not settle out of the medium as easily as suspensions and are not affected by gravity to the same extent. On the other hand, suspensions are less stable because the particles are larger and tend to settle out of the medium over time if left undisturbed.

In conclusion, the property that best differentiates the mixture of soil and water (a suspension) from milk (a colloid) is their particle size. Colloids have smaller particles that are more evenly dispersed throughout the medium, making them more stable than suspensions, which have larger particles that tend to settle out of the medium over time.

The correct answer is (D)

For more such questions on colloid

https://brainly.com/question/3003333

#SPJ8

Answer:

choice D. Ionic, because valence electrons are transferred.

Explanation:

Answer

Ethanol and Ethylene Glycol

Procedure

Hydrogen bonding occurs when hydrogen forms a molecular bond with a highly electronegative element such as Oxygen, Nitrogen, and Fluorine. Based on the structure of the molecules we can see that ethane does not contain the previously mentioned elements, therefore it will not form hydrogen bonds. Dimethyl ether has an oxygen atom located in the middle of the molecule, making it difficult to form a bond with other dimethyl ether molecules.

Lastly, Ethanol and Ethylene Glycol possess OH groups which are free to interact with similar groups via hydrogen bonding. Additionally, these last compounds exhibit higher boiling points, which can indicate a stronger intermolecular bonding, which is a characteristic of hydrogen bonding.

Answer: its D ! The arrows to the right of Earth should point up.

Explanation:

i took quiz

Answer:

its D i think

Explanation:

The mass of water produced is 792 grams by the combustion of 568 grams of decane.

Given:

Combustion of 568 grams of decane with 2979 grams of oxygen.

\(2 C_{10}H_{22 }+ 31 O_2 \rightarrow 20 CO_2 + 22 H_2O\)

To find:

The mass of water produced by combustion of 568 grams of decane.

Solution:

Mass of decane = 568 g

Moles of decane :

= \(\frac{568 g}{142 g/mol}=4 mol\)

Mass of oxygen gas = 2976 g

Moles of oxygen gas:

= \(\frac{2976 g}{32 g/mol}=93 mol\)

\(2 C_{10}H_{22 }+ 31 O_2 \rightarrow 20 CO_2 + 22 H_2O\)

According to reaction, 2 moles of decane reacts with 31 moles of oxygen, then 4 moles of decane will react with:

\(=\frac{31}{2}\times 4mol=62\text{ mol of}O_2\)

But according to the question, we have 93.0 moles of oxygen gas which is more than 62 moles of oxygen gas.

So, this means that oxygen gas is present in an excessive amount. Which simply means:

According to reaction, 22 moles of water is produced from 2 moles of decane, then 4 moles of decane will produce:

\(=\frac{22}{2}\times 4mol=44\text{mol of }H_2O\)

Mass of 44 moles of water ;

\(=44mol\times 18g/mol=792g\)

792 grams of water is produced by the combustion of 568 grams of decane.

Learn more about limiting reagent and excessive reagent here:

brainly.com/question/14225536?referrer=searchResults

brainly.com/question/7144022?referrer=searchResults

At the equivalence point of a titration between 24.6 mL of 0.389 M ethylamine, C2H5NH2, and 0.325 M hydroiodic acid, the pH is 0.

At the equivalence point of a titration between 24.6 mL of 0.389 M ethylamine, C2H5NH2, and 0.325 M hydroiodic acid, the pH is 0. The equation for the reaction is:

C2H5NH2 + HI → C2H5NH3+ + I-

The number of moles of hydroiodic acid, HI, needed to reach the equivalence point is equal to the number of moles of ethylamine, C2H5NH2. To calculate this, use the following equation:

Moles of HI = Moles of C2H5NH2

Volume of C2H5NH2 x Molarity of C2H5NH2 = Volume of HI x Molarity of HI

24.6 mL x 0.389 M = Volume of HI x 0.325 M

Volume of HI = 24.6 mL x 0.389 M / 0.325 M

Volume of HI = 30.53 mL

At the equivalence point, the pH of the solution is 0.

Learn more about titration here:

https://brainly.com/question/2728613#

#SPJ11

Answer:

Explanation:

s=h/t

=35.3/64.2(c)

=35.3/337.2(k)

=0.104