Which component of a circuit
safely opens and closes the
circuit?
A. the load
B. the wire
C. the source
D. the switch

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

Answer:

the answer is a A

Explanation:

Answer:

Compare

Explanation:

ΔH for the solution process is -44.4 kJ/mol

Temperature is the measure of hotness or coldness expressed in terms of any of several scales, such as Fahrenheit and Celsius. Temperature shows the direction in which heat power will spontaneously flow.

Mass of solution = mass of NaOH + mass of water

= 6.160 + 100.0 = 106.16 g

Specific heat capacity of solution = specific heat capacity of water = 4.184 J/goC

The heat released by the reaction = heat absorbed by the solution

= mass x specific heat capacity x temperature change of solution

= 106.5 x 4.184 x (37.8 - 21.6)

= 7219 J

Moles of NaOH = mass/molar mass of NaOH

= 6.16/40.00 = 0.154 mol

ΔH = -heat released by reaction/moles of NaOH

= -7219/0.1625

= -4.44 x 104 J/mol = -44.4 kJ/mol

Note that ΔH is negative as the reaction is exothermic and heat is released

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Answer:

i gotchu

Explanation:

its the 3rd raikages will eassyyy

Answer: \(Na_2CO_3+2HCl\rightarrow 2NaCl+H_2O+CO_2\)

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical equation will be:

\(1Na_2CO_3+2HCl\rightarrow 2NaCl+H_2O+1CO_2\)

Thus the numbers that go in the blanks are 1, 2, 2, and 1 respectively for \(Na_2CO_3\), \(HCl\) , \(NaCl\) and \(CO_2\) respectively.

Answer:

i think it would be 3 or lower

Answer:

Explanation:

Trust the correct answer

The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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A is the maximum pitch hence

C is the minimum pitch hence

B is the max height

D is length of wave

D=wavelength

Answer:

A: Crest

B: Amplitude

C: Trough

D: Wavelength

Explanation:

Trust m e bro

The mass of the carbon dioxide is  49.72 g from the calculation done.

The phrase "mole fraction," which is often referred to as "molar fraction" or "amount fraction," is used to describe the proportions of a mixture's components. It is an intangible quantity that expresses the proportion between the moles of a given component and the total moles in the combination.

We know that;

Number of moles of ethanol = 9.2/46 g/mol

= 0.2 moles

Now;

Number of moles of water = 216.0 g/18 g/mol

= 12 moles

Mole fraction of water = Number of water/ Total number of moles

0.9 = 12/12 + 0.2 + x

0.9(12.2 + x) = 12

10.98 + 0.9x = 12

x = 1.13 moles

Now;

Moles = mass/Molar mass

1.13 = x/44

x = 49.72 g

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The incorrect steps to do a complete stoichiometric calculation is option C which is Write the dimensional analysis because it does not entails the reactions between the reactants and the products.

Stoichiometric calculations are calculations that are done in chemistry between the reactants and products which includes balancing of equations, conversation of moles in the reactants and products, evaluation of moles in the reactants and so on.

Therefore, The incorrect steps to do a complete stoichiometric calculation is option C which is Write the dimensional analysis because it does not entails the reactions between the reactants and the products.

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Answer:

1.6 g/L

Explanation:

To calculate the concentration of ibuprofen in a bottle of Motrin, we need to divide the amount of ibuprofen (in grams) by the volume of the bottle (in liters).

First, we need to convert the volume of the bottle from milliliters (mL) to liters (L):

500 mL = 0.5 L

Now we can calculate the concentration:

Concentration = Amount of ibuprofen / Volume of bottle

Concentration = 0.8 g / 0.5 L

Concentration = 1.6 g/L

Therefore, the concentration of ibuprofen in a bottle of Motrin is 1.6 g/L.

Answer:

3 years

Explanation:

(50*0.3)x>=100

Answer:

B

Explanation:

simple answer

According to the chemical formula of calcium hydroxide there are 1 calcium,2 oxygen, and 2 hydrogen atoms.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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The value of the rate constants at various temperatures can be measured from the plot of ln K versus 1/T. The activation energy of the reaction obtained from the plot is

The minimum excess energy that the reactants must acquire so as to have energy equal to the threshold energy for the reaction is defined as the activation energy.

In the plot of ln K versus 1/T the slope obtained is [ -Eₐ / 2.303 R ] and the intercept on the y -axis is equal to log A.

Here the slope in the plot is given as − 5780 K. Then the activation energy is calculated as:

Slope = -Eₐ / R

-5780 K = -Eₐ / 8.314 J/ mol.K

Eₐ =  8.314 J/ mol.K × 5780 K = 48054.9 J/ mol = 48.054 kJ.

Thus the activation energy of the reaction is 48054.9 J/ mol or 48.054 kJ.

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According to the MilliporeSigma chemical manufacturers statement, we aim to promote global human health and quality of life for our clients. Leading life science products and services are required to uphold this promise.

Introduction. Azo dyes are frequently used to enhance the visual appeal of food by enhancing its look. Among these, the yellow colorant tartrazine (E102) and the red dye allure (E129) are frequently employed in beverages, juices, baked goods, meat, and sweets products.

AS DEFINED BY OSHA 29 CFR 1910.1200 AS A HAZARDOUS SUBSTANCE. Possibility of having permanent effects. Although it is not believed that ingesting the substance will have any negative effects, it could nevertheless have a negative impact on the person's health after consumption, especially if they already have organ damage.

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Answer: EXTINCTION

Explanation:

Answer:

extinction

Explanation:

Answer: Oil based dyes are best solutes which can be dissolved by Turpentine,Kerosene, and Ethanol ​like solvents.

Explanation:

This solvents helps to dissolve oil based dyes easily.

Answer:

T = 643K = 643-273.15 = 369.85°C = 370°C = maximum safe operating temperature

Explanation:

The actual question has following data which the question given has missing

The vessel is a stainless-steel cylinder that measures wide 25.0 cm and 30.0 cm high.

The maximum safe pressure inside the vessel is 6.60 MPa.

The vessel may contain up to 0.800 kg of carbon monoxide gas.

Volume of cylinder = pi x r^2 x h  = 3.14 x (25/2)cm^2 x 30cm = 14725.78 cm^3 or 0.01472578 m^3

Now, using ideal gas law, PV = nRT

P = 6.60×10^6 Pa

V = 0.01472578 m^3

n= no. of moles = mas staken/ molar mass of CO2 = 800g/44g/mol = 18.18

moles

R =  8.314 J/mol.K

So, (6.60x10^6 ) x 0.01472578  = 18.18×8.314×T

T = 643 K = 643-273.15 = 369.85°C = 370°C = maximum safe operating temperature

Answer:

Q = -1.318 KJ

Explanation:

We will use the assumption that this solution acts like water and thus we will use the specific heat capacity of water and when converting from mL to g, we will use the conversion like we do for water.

We are told that 50 mL of HCl reacts with 100 mL of NaOH.

Thus total mass; m = 50 + 100 = 150 mL

Converting to grams gives 150 g since we have assumed that the solution behaves like water.

We are given;

Initial temperature; T_i = 21.3° C

Final temperature; T_f = 23.4° C

ΔT = 23.4 - 21.3

ΔT = 2.1°C

Formula for quantity of heat is;

Q = mcΔT

c is specific heat capacity.

We will use c = 4.184 J/g°C since the solution is assumed to behave like water.

Thus;

Q = -(150 × 2.1 × 4.184)

Q = -1317.96 J

Negative sign is used because temperature was raised and thus reaction is exothermic.

Approximation to KJ gives; -1.318 KJ

Answer:

Explanation:

Atoms are the building blocks of matter.

They are the smallest particles of an element that still have the element's properties.

All atoms are very small, but atoms of different elements vary in size.

Three main types of particles that make up all atoms are protons, neutrons, and electrons.

Answer: A : 3

Explanation: 18 CO2 / 6 CO2 = 3 C6H12O6

Answer:

A = 3.

Explanation:

Here is how:

To determine the number of molecules of C6H12O6 (glucose) needed to produce 18 molecules of CO2, we need to consider the balanced chemical equation for the complete combustion of glucose:

C6H12O6 + 6O2 -> 6CO2 + 6H2O

From the balanced equation, we can see that 1 molecule of glucose (C6H12O6) produces 6 molecules of CO2. Therefore, we can set up a proportion to find the number of glucose molecules needed:

1 molecule of glucose produces 6 molecules of CO2

x molecules of glucose produce 18 molecules of CO2

Using the proportion:

1/6 = x/18

To solve for x, we can cross-multiply:

6x = 18

Dividing both sides by 6:

x = 3

Therefore, 3 molecules of C6H12O6 are needed to produce 18 molecules of CO2.

Answer:

623.7

Explanation:

40.5*15.4=623.7

When cyclohexene is mixed with a sulfonitric mixture (H2SO4/HNO3), it reacts to form nitrocyclohexane and sulfur dioxide.

This reaction proceeds in two steps. Firstly, cyclohexene undergoes electrophilic addition with the nitronium ion (NO2+), which is generated from the reaction between HNO3 and H2SO4. This results in the formation of nitrocyclohexane, giving the initial pale yellow color to the solution.

In the second step, nitrocyclohexane reacts with the excess sulfuric acid present in the mixture. This step is highly exothermic, releasing a significant amount of energy. The sudden release of energy causes an explosion. The exact mechanism of the explosive reaction is complex, involving the generation of reactive intermediates. It is believed that the reaction proceeds via a radical mechanism, where nitrocyclohexane decomposes into highly reactive nitrogen and carbon-centered radicals. These radicals further react with sulfur dioxide, which is produced in the reaction, to form stable compounds. As a result, the solution turns dark brown after the explosion.

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The mass by volume percentage is an important method which is used to calculate the concentration of a solution. This type of concentration is usually expressed as a percentage. Here the amount of solute is

The mass by volume percentage of a solution is defined as the ratio of the mass of solute that is present in a solution relative to the volume of the solution as a whole.

The equation used to calculate the mass by volume percentage is:

m / v = Mass of solute / Volume (mL) of solution × 100 %

m / v = 50 g / 75 mL + 25 mL = 0.5  × 100 % = 50%

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Answer:criminal behavior

Explanation:

Edge 2021

Answer:

Criminal Behavior

Explanation:

In a first order reaction,  plot of the logarithm of the concentration of reactants against the time gives a straight line graph.

The question is incomplete but I will try to help you as much as a I can. A first order reaction is one in which the rate of reaction depends on the concentration of only one reactant.

A plot of the logarithm of the concentration of reactants against the time gives a straight line graph.

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Answer:

need points

Explanation:

The measure of the length of events and the duration of intervals between events is time.

The duration of events or the gaps between them can be measured, compared, or even ordered using time. The lengthy period of time that the Earth's geologic history takes up is known as geologic time. Starting at the beginning of the Archean Eon  formal geologic time runs until the present. Geology is defined as the "Science of the Earth."

Geology is the fundamental Earth science that examines how the earth created, its structure and composition, and the various forces acting on it. It is sometimes known as geoscience or earth science.

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Answer:

+3

Explanation:

If an atom loses electrons, it becomes positive. Because silver loses 3 electrons, the charge becomes positive 3.

Around 0.999 grams of iron made up the initial sample. Mathematical definitions of molarity include: Molarity is equal to the quantity of solute in moles.

By dividing the number of moles of HCl even by volume (L) of a solution in which they were dissolved, we may get the acid solution's molarity: moles of Ce4+ = Molarity Volume (in liters)

By substituting the values specified in the problem, we obtain:

Ce4+ moles equal 0.493 M 0.03635 L 0.0179 moles.

As the reaction requires the same number of moles of Fe2+ and Ce4+, we may state that:

Fe2+ mole equivalent: 0.0179 moles

We must translate the moles of Fe2+ into grams if iron using molar mass of Fe in order to determine the amount of iron with in original sample. A mol of iron has a molar mass of 55.845 g.

Fe2+ molar mass is equal to 0.0179 moles, or 55.845 g/mol, times the mass of Fe, making Fe mass equal to 0.999 g.

Mathematical definitions of molarity include: Molarity is equal to the quantity of solute in moles. number of litres in the solution. The volume of the solution will be in litres (L), as the quantity of moles per solute was measured in moles. Therefore, mol L – 1 is the unit of molarity.

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