Which of the following equations is NOT balanced?A MgCO3→MgO + CO2 B NaCl + KI →NaI + KCl C Na + O2 →Na2O D Ca + MgSO4→CaSO4+ Mg

The mixture of phenol and benzoic acid is separated by adding \(NaHCO_{3}\)  to produce brisk effervescence with sodium benzoate .

When benzoic acid react with \(NaHCO_{3}\) then sodium benzoate is produced which is soluble in water and separated from non aqueous solvent . Organic compounds are soluble in organic solvent and inorganic compound mainly soluble in inorganic solvent like water.

What is brisk effervescence?

Brisk effervescence is when continuous gas evolution occurs in a chemical reaction like CO2. When HCl is added in \(NaHCO_{3}\) then CO2 evolved.

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Answer:

342. 15 g/mol is the mass

Al Aluminium 26.98g 2 atoms per mole = 15.7716%

S Sulfur 32.06g 3 atoms per mole = 28.1151%

O Oxygen 15.99g 12 atoms per mole = 56.1133%

Explanation:

Hope this helps

Answer:

15,7%

Explanation:

What is the percentage of Aluminum in Aluminum Sulfate?

Aluminum Sulfate

is Al2 (SO4)3

its molar mass is

(2 X 27) + (3 X 96) = 54 + 288 = 344

THE % Al IS (54 /344) X 100 = 15,7%

The infectious agent that is made up of just a nucleic acid particle is a Viroid.

Viroids are infectious agents that are made up of just a single-stranded, circular, non-protein-coding RNA molecule and they do not contain a protein coat that surrounds their genetic material like in virions, bacteriophages, and prions. Therefore, the infectious agent that is made up of just a nucleic acid particle is a Viroid.

Viroids cause a variety of plant diseases and are transmitted via agricultural instruments such as pruning shears, or through soil or contaminated water. Viroids do not have the genetic information required to synthesize the proteins required for their replication, therefore they depend on the host plant's cellular machinery to replicate. They are known to affect both monocots and dicots and they have no known human or animal pathogenic effects.

Viroids are among the smallest infectious agents that exist and are of significant concern to farmers and growers. Viroids are approximately 10% the size of the smallest viruses, and their small size allows them to be easily transmitted between plants by mechanical transfer.

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Answer:

Explanation:

Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.

Answer:

Given the balanced equation

CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

we know that we'll get one mole CO2 for every 1 mole CH4.  So let's calculate how many moles are in 50 g of CH4 by dividing it's mass by it's molar mass (16 g/mole).  I get 3.125 moles.  The equation says we should get the same number of moles of CO2, so set moles CO2 = 3.125 moles.  Then we can find the mass of CO2 by multipying by the molar mass of CO2 (44 g/mole).  We should expect 138 grams of CO2.

Explanation:

Answer:

We know that we'll get one mole CO2 for every 1 mole CH4.  So let's calculate how many moles are in 50 g of CH4 by dividing it's mass by it's molar mass (16 g/mole).  I get 3.125 moles.  The equation says we should get the same number of moles of CO2, so set moles CO2 = 3.125 moles.  Then we can find the mass of CO2 by multipying by the molar mass of CO2 (44 g/mole).  We should expect 138 grams of CO2.

Answer:

Gjvb

Explanation:

Using the combined gas law equation as follows:

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (kPa)

P2 = final pressure (kPa)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to this question;

T1 = 300K

T2 = -73 + 273 = 200K

P1 = 303kPa

P2 = 202kPa

V1 = 2L

V2 = ?

Using the above formula:

303 × 2/300 = 202 × V2/200

606/300 = 202V2/200

Cross multiply;

606 × 200 = 300 × 202V2

121200 = 60600V2

V2 = 121200/60600

V2 = 2L

The new volume is 2L

Answer:

maybe 25 joules

Explanation:

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If 5 J (joules) of electrical energy is used to power an iron, 25 joules of heat and steam should it be transformed into.

Energy is referred to by scientists as the capacity for work. People have figured out how to transform energy from one form to another and then use it to accomplish tasks, making modern civilization possible.

Walking and bicycling, driving cars on roads and boats through water, cooking meals on stoves, making ice in freezers, lighting our homes and workplaces, producing goods, and sending astronauts into space all require the usage of energy.

Energy is capable of changing its forms. For instance, a person's body stores chemical energy from the food they consume until they may use it as kinetic energy when working or playing.

Therefore, If 5 J (joules) of electrical energy is used to power an iron, 25 joules of heat and steam should it be transformed into.

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Answer:

The answer is salt

Explanation:

I got it right on the quiz

The process of additive color mixing is best described by the characteristics of pigment mixing that might result in drab colors.

When lights of various wavelengths are combined, additive color mixing results. We see white light rather than numerous distinct hues when we combine all of the sun's many wavelengths. Because all of the wavelengths still reach our eyes, it is called additive.

Secondary colors are created by combining varying ratios of red, green, and blue light. Red and blue light are combined to create the color purple. Another hue created by fusing green and blue light is cyan. Red and yellow light are combined to create the color magenta.

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To answer your question, we need to first understand what mole fraction is. Mole fraction is the ratio of the number of moles of one component in a mixture to the total number of moles in the mixture. The mole fraction of acetone in the resulting mixture is 0.236.

In this case, we are dealing with a binary mixture of water and acetone, with equal masses of both substances.
To find the mole fraction of acetone in the mixture, we first need to determine the number of moles of each substance. We can do this by using the formula:
Number of moles = Mass / Molar mass
The molar mass of water is 18 g/mol, and the molar mass of acetone is 58 g/mol. If we assume that we have 100 grams of each substance, we can calculate the number of moles of each as follows:
Number of moles of water = 100 g / 18 g/mol = 5.56 moles
Number of moles of acetone = 100 g / 58 g/mol = 1.72 moles
The total number of moles in the mixture is simply the sum of these two values:
Total number of moles = 5.56 moles + 1.72 moles = 7.28 moles
To find the mole fraction of acetone, we divide the number of moles of acetone by the total number of moles:
Mole fraction of acetone = Number of moles of acetone / Total number of moles = 1.72 moles / 7.28 moles = 0.236
Therefore, the mole fraction of acetone in the resulting mixture is 0.236.
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A condensed structural formula is a simple way of representing organic compounds.

The given organic compounds and condensed structural formula is presented below;

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Answer:

0.893mol

Explanation:

n = m ÷ M

= 275 ÷ (23 + 80)

= 2.67 mol

* now use the Mol ratio *

NaBr : FeBr3

6 : 2

2.67 : x

5.67 = 6x

n( FeBr3 ) = 0.893 mol

No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. Option B is the correct answer.

The "fat pencil" test is a quick visual check to determine if a dataset can be reasonably approximated by a normal distribution. In this case, the pH readings of wastewater show a significant deviation from a normal distribution. The presence of several low pH values (1.0) and a few high pH values (10.0, 10.5, 11.4) indicate a non-normal distribution with skewness and potential outliers. Therefore, it is not reasonable to model these data using a normal distribution.

Option B is the correct answer.

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Answer:

The mouth begins the process of digestion by mechanically breaking food into smaller pieces.

Explanation:

Digestion is a crucial process that involves the break down of complex food molecules into simpler ones that are assimilable by the body. The process of digestion in humans, for example, is said to begin in the MOUTH where the food enters through.

The mouth via the use of teeth helps the initially break down the food particles using mechanical/physical method. This further helps the break down of the food into tiny particles before they are acted on enzymatically.

Answer:

78.894g of NaCl

Explanation:

This requires some dimensional analysis:

Using the molar mass of NaCl we get the answer we are looking for.

1.35 Moles of NaOH * \(\frac{58.44g NaCl}{ 1 mole NaCl}\) = 78.894 g of NaCl

the required answer is copper

Answer:

B - Copper

Explanation:

Iodine, Sulfur, and Phosphorus can't conduct electricity.

Answer:

Option D. 4

Explanation:

Ag(s) + NO3–(aq) + H+(aq) → Ag+(aq) + NO(g) + H2O(l)

To know the coefficient of H+, let us balance the equation. This is can be done as shown below:

Ag(s) + NO3–(aq) + 2H+(aq) → Ag+(aq) + NO(g) + H2O(l)

There are 3 atoms of O on the left side and a total of 2 atoms on the right side. It can be balance by putting 2 in front of H2O as shown below:

Ag(s) + NO3–(aq) + H+(aq) → Ag+(aq) + NO(g) + 2H2O(l)

There are 4 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 4 in front of H+ as shown below:

Ag(s) + NO3–(aq) + 4H+(aq) → Ag+(aq) + NO(g) + 2H2O(l)

Total charge on the left side:

– 1 + 4 = +3

Total charge on the right side:

+1

To balance the charge, we simply put 3 in front of Ag and Ag+ as shown below:

3Ag(s) + NO3–(aq) + 4H+(aq) → 3Ag+(aq) + NO(g) + 2H2O(l)

Now the equation is balanced.

The coefficient of H+ is 4.

Someone kills most of the bacteria and other decomposers in a lake cycling of matter in the ecosystem then they break everything down

Decomposers are organism that breakdown dead or decaying organism they carried out decomposition and process possible by only certain kingdom such as fungi

Primary role of decomposers in ecosystem are the cycle matter by returning carbon and other matter to the ecosystem because they use oxygen in their breakdown process and at the end of the breakdown they return nutrient like carbon dioxide and nitrogen back to the ecosystem and they break everything down and when they breakdown the matter they are adding nutrient back into the earth and someone kill the bacteria and other decomposers in a lake then the cycling of matter would not go further and that's why total ecosystem get blown

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The disadvantage of increasing our use of solar energy is that unfortunately currently, the production and storage of solar energy is bit as cost efficient when compared to obtaining the same quantity of energy from fossil fuels.



The bolded portion contains an error. The correct correction should be: "This is the seasons."

The bolded portion contains an error. The correct correction should be: "This is the seasons."

The word "the" should be removed in order to have proper grammar. The corrected sentence would read: "This is seasons."

The word "the" is unnecessary in this context, as it does not add any meaning to the sentence.

The corrected version is concise and grammatically correct.

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Answer:

\(\large \boxed{\text{0.88 L}}\)

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

\(p_{1}V_{1} = p_{2}V_{2}\)

Data:

\(\begin{array}{rcrrcl}p_{1}& =& \text{1.34 atm}\qquad & V_{1} &= & \text{ 0.56 L} \\p_{2}& =& \text{0.85 atm}\qquad & V_{2} &= & ?\\\end{array}\)

Calculations:  

\(\begin{array}{rcl}\text{1.34 atm} \times \text{0.56 L} & =& \text{0.85 atm} \times V_{2}\\\text{0.750 L} & = & 0.85V_{2}\\V_{2} & = &\dfrac{0.750}{0.85}\\\\& = &\textbf{0.88 L}\\\end{array}\\\text{The balloon's new volume is $ \large \boxed{\textbf{0.88 L}}$}\)

Explanation:

5N right because -15N for left plus +20N for right = +5N

Answer: 1 mole nitrogen produces 2 moles ammonia

How many moles you need for 155 mol ammonia?

155/2 moles

Explanation:

If a solid forms upon adding two solutions together, the mass of the solid formed can be determined by performing mass balance calculations.

When two solutions are mixed, the ions present in the solutions react with each other to form an insoluble solid called a precipitate. The precipitate that forms depends on the nature and concentration of the ions in the solutions and their solubility products (Ksp).To determine the mass of the solid that forms when two solutions are mixed, mass balance calculations are performed.

This involves measuring the masses of the reactants (the two solutions) and the mass of the product (the solid) formed, and using the law of conservation of mass to determine the mass of the solid product. The mass balance equation for the reaction is: Mass of reactant A + Mass of reactant B = Mass of product C Where A and B are the reactants (the two solutions) and C is the product (the solid precipitate). By performing mass balance calculations, the mass of the solid formed can be determined if the masses of the reactants are known.

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The magnetic quantum number, represented by the symbol m, can be assigned any integer value between -l and +l, where l is the orbital angular momentum quantum number.

The orbital angular momentum quantum number depends on the principal quantum number, n, and can be any integer value from 0 to n-1.

The magnetic quantum number provides information about the orientation of the orbital in space. For each value of l, there are 2l+1 possible values of m. Each value of m corresponds to a specific orientation of the orbital in space relative to a magnetic field. The number of orbitals in a subshell is given by the formula 2l+1.

Overall, the magnetic quantum number provides information about the spatial orientation of the electron within an atomic orbital.

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Answer: Number 1 is titanium.

The one where you calculate a tin block is 13.0cm.

3. Is A) Same Density And Same Chemical Properties.

4. Is also A. Ne

Explanation:

The mass of 0.4662 moles of carbon is 5.59 g. Nitrogen and carbon are in 7:3 ratio in this compound. Hence, the mass of nitrogen will be 13.04 or 0.93 moles.

The mole ratio of elements in a compound is the ratio of the number of moles of one element with the number of moles of another element in the compound.

In the given compound the ratio of carbon to nitrogen is 7:3.

atomic mass of carbon = 12 g/mol

mass of 0.4662 moles = 12 × 0.466 = 5.59 g

Atomic mass of nitrogen = 14 g/mol

7/3 = mass of nitrogen/ 5.59

mass of nitrogen =  ( 7 × 5.59 )/14 =13.04

Number of moles of nitrogen in 13.04 g = 13.04/14 = 0.93.

Therefore, there will be 0.93 moles of nitrogen atoms.

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Chlorobenzene can be converted into benzoic acid using Grignard reagent. Thus, treating with Mg metal in dry ether followed by carboxylation and then hydrolyising the product gives benzoic acid.

Grignard reagents are alkyl magnesium halides with the general formula RMgX. They can be prepared by treating alkyl halides with Mg metal in presence of dry ether.

Chlorobenzene when treated with Mg gives MgCl substituted benzene ring which upon carboxylation using carbon dioxide followed by hydrolysis gives benzoic acid.

Therefore, the reagents needed for the conversion of chlorobenzene to benzoic acid are Mg, CO₂ and water.

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