formalin and methanol are both synonymous with formaldehyde

Answer:

\(density = \frac{mass}{volume} \\ \\ density = \frac{20.015}{5.44} \\ \\ { \boxed{ \boxed{density = 3.679 \: g {cm}^{ - 3} }}}\)

The type of reaction is Mg + S → MgS is of synthesis reaction. Therefore, the correct option is option B among all the given options.

A synthesis reaction occurs when multiple chemical species unite to create a more complex product. One of the most typical chemical reactions, it is also known as a direct reaction.

A bigger compound is created when two or maybe more reactants mix. A deconstruction reaction, which occurs when the bonds in a complex product are broken and it separates the product in with its individual components or elements, is the reverse of a synthesis process.  The type of reaction is Mg + S → MgS is of synthesis reaction.

Therefore, the correct option is option B among all the given options.

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Answer:

To calculate the amount of heat released in a chemical reaction, use the equation Q = mc ΔT, where Q is the heat energy transferred (in joules), m is the mass of the liquid being heated (in kilograms), c is the specific heat capacity of the liquid (joule per kilogram degrees Celsius).

Explanation:

Considering the definition of alkanes, single bonds are found in an alkane.

Alkanes are a class of hydrocarbons (compounds containing only carbon and hydrogen) that are made up of a variable number of carbon atoms joined together by single bonds. In turn, each carbon atom bonds to hydrogen atoms, which may eventually be replaced by other atoms or functional groups.

In other words, alkanes are open or closed chain molecules that are linked by simple bonds.

Alkanes are saturated hydrocarbons because the bonds between carbon atoms are simple and stable. And as mentioned, the hydrogen atoms bonded to each carbon atom can be replaced by other atoms, such as halogens (fluorine, bromine, chlorine) or various groups or “radicals”. In the latter case, the structure becomes more complex giving rise to branched alkanes.

In summary, single bonds are found in an alkane.

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Answer: C) single only

Explanation:

just got it right

The process that does not occur as water changes phase from liquid to vapor is warming of the surrounding environment.

When water changes from liquid to vapor, it undergoes a phase change called evaporation. During this process, the water molecules absorb heat energy, which allows them to break free from the intermolecular forces that hold them together in the liquid state. This absorption of heat is what causes the temperature of the water to increase as it changes to vapor.

However, as the water molecules absorb heat, they actually cause the surrounding environment to become cooler, not warmer. This is because the heat energy is being transferred from the environment to the water molecules, causing the temperature of the environment to decrease. Therefore, warming of the surrounding environment does not occur during the phase change from liquid to vapor.

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Fraud risk is considered to be the set of situational circumstances that provide the perpetrator a chance or opportunity to perform the material misstatement of the financial recodes.

Fraud risk refers to the conditions, factors, or events that create an environment conducive to fraudulent activities within an organization's financial reporting process. These circumstances can vary and may include factors such as weak internal controls, lack of segregation of duties, inadequate oversight, pressure to meet financial targets, complex transactions, and a disregard for ethical practices. When these conditions are present, they increase the likelihood that individuals within the organization may engage in fraudulent activities, such as manipulating financial records, misappropriating assets, or engaging in deceptive financial reporting practices.

Identifying and understanding fraud risks is crucial for organizations to mitigate the potential for material misstatements in financial records. By recognizing the factors that contribute to fraud risk, companies can implement appropriate controls, policies, and procedures to deter and detect fraudulent activities. This includes implementing strong internal control systems, promoting a culture of ethics and integrity, conducting regular risk assessments, and fostering transparency and accountability throughout the organization. Effective fraud risk management helps safeguard the accuracy and reliability of financial information, protecting the interests of stakeholders and maintaining trust in the financial reporting process.

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Answer: i would say D or the last one.

Explanation: According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

Hope this helps :) Can u plz mark me branliest

Answer:

im pretty sure its Frying an egg in a skillet

im so sry if im wrong have a nice day/night (:

Answer:

The volume of a 76.52 g sample of methane gas is

32.7 L at 26.9 °C and 4.45 atm. What will its volume be at 95.4 °C and 1.7 atm?

CaI₂ + Hg(NO₃)₂ --------->HgI₂ + Ca(NO3)2

2Al + 3Cl₂ --------->2AlCl3

Ag + HCl ------->AgCl + H2

C2H2 + 5O2 --------> 4CO2 + 2H2O

MgCl₂ --------->Mg + Cl2

Answer:

2.7 mL

Explanation:

The equation of the reaction is;

2AlBr3 + 3Cl2 -----> 2AlCl3 + 3Br2

Number of moles in 2.12 x 1022 formula units of aluminum bromide

1 mole of AlBr3 = 6.02 * 10^23 formula units

x moles = 2.12 x 1022 formula units

x = 2.12 x 1022 formula units  * 1 mole/ 6.02 * 10^23 formula units

x = 0.0352 moles of AlBr3

According to the reaction equation;

2 moles of AlBr3 produces 3 moles of Br2

0.0352 moles of AlBr3 produces 0.0352 moles  *  3 moles /2 moles

= 0.0528 moles of Br2

Mass of Br2 produced = 0.0528 moles of Br2 * 159.808 g/mol

Mass of Br2 produced = 8.44g

But density = mass/volume

volume = mass/density

volume of Br2 = 8.44 g/ 3.12 g/mL

volume of Br2 =  2.7 mL

Answer:

A

Explanation:

Answer:

Potential and Kinetic energy

Explanation:

Answer:Open this pdf if has the answers

Explanation:

Taking into account the reaction stoichiometry, a mass of 49.6 grams of NO can be formed from 4.96 moles of NO₂.

In first place, the balanced reaction is:

3 NO₂ + H₂O  → 2 HNO₃ + NO

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate:

The following rule of three can be applied: if by reaction stoichiometry 3 moles of NO₂ form 30 grams of NO, 4.96 moles of NO₂ form how much mass of NO?

mass of NO= (4.96 moles of NO₂× 30 grams of NO)÷3 moles of NO₂

mass of NO= 49.6 grams

Finally, 49.6 grams of NO can be formed.

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Answer:

metallic compounds are good conductors of electricity.

metallic compounds have high boiling points

Answer:

In order of the colors of the pH test papers from most acidic solutions to most alkaline solutions, the colors of the pH test papers would be

               Red > Orange/Pink > Purple > Blue

(Red) Most acidic                                (Blue)Most alkaline

Explanation:

We can use the different colors of pH test papers to determine the acidity or alkalinity of a solution.

Definitions

A pH test paper is a strip of indicator paper which changes colour when placed in acidic or alkaline solutions.

A solution is said to be acidic if it turns the colour of the pH test paper RED

A solution is said to be alkaline/basic if it turns the colour of the pH test paper BLUE

Color changes

If the pH test paper turns red, then the solution is a very strongly acidic solution with pH less than 3 ( ie pH between 1-3)

If the pH test paper turns orange or pink, then the solution is a weak acidic solution with pH greater than 3 ut less than 7

If the pH test paper turns purple, then the solution is a weak alkaline solution with pH greater between 8-11

If the pH test paper turns blue, then the solution is a very strong alkaline solution with pH between 11 - 14

Summary

Therefore, in order of color changes from the most acidic solutions to most alkaline solutions, the colors of the pH test papers would be

Red > Orange/Pink > Purple > Blue

Most acidic                                Most alkaline

Answer:

d<c<a<b

Explanation:

Therefore, the concentration of piperacillin sodium in the infusion solution is 200 mg/mL.

The given vial contains 2g of piperacillin sodium and is made up to 10mL with sterile water for injection. The concentration of this solution is thus 2/10 = 0.2 g/mL.

In order to administer this solution by infusion, the pharmacist dilutes the solution by adding it to 100mL of 5% dextrose injection. Since the volume of piperacillin sodium solution added to the 100mL of dextrose injection is not given, it can be assumed that the final volume is 110mL (10mL + 100mL).

The total amount of piperacillin sodium in the infusion solution is the sum of the amount in the initial solution and the amount in the diluent. The amount in the initial solution is 2g.

In 100mL of 5% dextrose injection, there are 5g of dextrose. To determine the amount of piperacillin sodium in the diluent, we need to know the concentration of the initial solution in mg/mL, which is 0.2 g/mL.0.2 g/mL = 200 mg/mL

Therefore, the amount of piperacillin sodium in the 10mL of initial solution is 2g x 1000 mg/g = 2000 mg, and the amount in the diluent is 200 mg/mL x 100 mL = 20000 mg.

The total amount of piperacillin sodium in the infusion solution is 2000 mg + 20000 mg = 22000 mg.

The concentration of piperacillin sodium in the infusion solution is the total amount of piperacillin sodium (in mg) divided by the total volume of the solution (in mL).

Concentration of piperacillin sodium in the infusion solution in mg/mL is:22000 mg / 110 mL = 200 mg/mL

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The CEC for this soil sample is 675.2 cmol(+)/kg.

The % Base Saturation for this soil sample is approximately 136.62%.

The % Acid Saturation for this soil sample is approximately 60.55%.

To    calculate the CEC, % Base Saturation (B.S.), and % Acid Saturation for the given soil sample:

a. Calculation of CEC (Cation Exchange Capacity):

CEC is the sum of exchangeable cations in the soil. From the given results, we have:

CEC = Ca2+ + Mg2+ + K+ + Al3+

CEC = (100 mg/L + 45 mg/L + 85.5 mg/L + 94.2 mg/L) / (25 g / 1000)

CEC = 168.7 mg / (25 g / 1000)

CEC = 675.2 cmol(+)/kg

b. Calculation of % Base Saturation (B.S.):

% B.S. represents the percentage of CEC occupied by base cations. In this case, we consider Ca2+, Mg2+, and K+ as base cations. The formula to calculate % B.S. is:

% B.S. = (Ca2+ + Mg2+ + K+) / CEC * 100

% B.S. = (100 mg/L + 45 mg/L + 85.5 mg/L) / (168.7 cmol(+)/kg) * 100

% B.S. = 230.5 mg / (168.7 cmol(+)/kg) * 100

% B.S. = 136.62%

c. Calculation of % Acid Saturation:

% Acid Saturation represents the percentage of CEC occupied by acid cations, in this case, H+ and Al3+. The formula to calculate % Acid Saturation is:

% Acid Saturation = (H+ + Al3+) / CEC * 100

% Acid Saturation = (8.0 mg/L + 94.2 mg/L) / (168.7 cmol(+)/kg) * 100

% Acid Saturation = 102.2 mg / (168.7 cmol(+)/kg) * 100

% Acid Saturation = 60.55%

Please note that the given values were in milligrams per liter (mg/L), and the CEC and % Saturation values were calculated assuming a conversion from mg/L to cmol(+)/kg using the mass of the soil sample (25 g).

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The molar concentration is 1.56 x 10^-5 M.

To determine the molar concentration of hydrogen ions (H+) in a 0.05 M HCN solution, we need to consider the acid dissociation constant (Ka) of HCN. HCN is a weak acid that partially dissociates in water according to the following equation:

HCN ⇌ H+ + CN-

The Ka of HCN is 4.9 x 10^-10. Using the Ka expression, we can set up an equation to solve for the concentration of H+:

Ka = [H+][CN-] / [HCN]

Since the dissociation is small, we can assume that [H+] = [CN-] and that the change in [HCN] is negligible. Therefore, the equation becomes:

4.9 x 10^-10 = [H+]^2 / 0.05

Solving for [H+], we find that the molar concentration of hydrogen ions in the 0.05 M HCN solution is approximately 1.56 x 10^-5 M.

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Answer:

6.6666666667 feet per second I believe

Answer:

4.5 miles per hour.

Explanation:

30* 2= 400 feet in 1 min

24,000 per hour

5280 feet is 1 mile.

Answer:

1.44 L

Explanation:

If the temp does not change

P1V1 = P2V2

1 * 3.6   = 2.5 * V2

V2 = 1.44 L

There are approximately 0.000486 moles of hydrogen present in the sample.

To find the number of moles of hydrogen present in the sample, you need to use the ideal gas law equation, which is PV = nRT where P is the pressure of the gas (in atm), V is the volume of the gas (in L), n is the number of moles of gas, R is the ideal gas constant, and T is the temperature of the gas (in K). First, you need to convert the pressure from torr to atm. You can do this by dividing the pressure in torr by 760, since 1 atm is equal to 760 torr. In this case, the pressure in atm would be: P = 764.5 torr / 760 = 1.0059 atm Next, you need to convert the volume from ml to L. You can do this by dividing the volume in ml by 1000, since 1 L is equal to 1000 ml. In this case, the volume in L would be: V = 30.42 ml / 1000 = 0.03042 L Finally, you need to convert the temperature from degrees Celsius to Kelvin. You can do this by adding 273.15 to the temperature in Celsius. In this case, the temperature in K would be:T = 25.58 degrees Celsius + 273.15 = 298.73 K Now that you have all the necessary values, you can plug them into the ideal gas law equation to solve for the number of moles of hydrogen: n = (PV) / (RT) = (1.0059 atm * 0.03042 L) / (8.31 J/mol*K * 298.73 K) = 4.86 x 10^-4 mol Therefore, there are approximately 0.000486 moles of hydrogen present in the sample

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Answer:

high density, malleable, ductile, can corrode, good conductors,

Explanation:

gold's density is 19.3 g/cc compared to something like water which is 1g/cc

aluminum is extremely malleable, it can be flattened into thin sheets

copper can be formed into complex forms without breaking like wire, instruments, and bed frames

steel can get corroded by the oxygen particles in the air if it stays out too long.

copper is an excellent example of a conductor, it is used to make wires which conduct electricity that brings "power" into things like lights, computers, and TVs

The catalytic converter of a secondary air injection system converts the hydrocarbons and carbon monoxide to carbon dioxide (CO2) and water (H2O). It is a fundamental part of a vehicle.

A catalytic converter refers to the device observed in a car and/or vehicle, which is used to remove different contaminant gases.

In general, the catalytic converter is placed close to the car engine and reduces the release of hydrocarbons.

In general, the air injection system is connected to the catalytic converter in order to provide useful oxygen required for oxidation reactions.

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For a neutralization reaction, more heat is evolved and Q is doubled.

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Answer:

steel making

Explanation:

Answer:

9.55 mol of Al

Explanation:

To obtain the number of moles of a certain element given the number of atoms only, you have to divide it with Avogadro's number,

6.02 x 10^23 mol−1.

mol Al = (( 5.75 x 10^24 Al) atoms) ⋅ ((1 mol / 6.02 x 10^23 Al ) atoms)  

mol Al= 9.55 mol

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