How many mols are present in 5.24 x 1024 atoms of Carbon tetra fluoride?

Taking into account the definition of calorimetry, the mass of iron that must be added is 531.556 grams.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

When heat added or removed from a substance causes a temperature change in it without affecting its molecular structure, it is called sensible heat.

So, the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Replacing in the expression to calculate heat exchanges:

For iron: Qiron= 0.450 J/(g°C) × mass of iron× (65 °C - 100 °C)

For water: Qwater= 4.186 J/(g°C) × 50 g× (65 °C - 25 °C)

If two isolated bodies or systems exchange energy in the form of heat, the quantity received by one of them is equal to the quantity transferred by the other body. That is, the total energy exchanged remains constant, it is conserved.

Then, the heat that the gold gives up will be equal to the heat that the water receives. Therefore:

- Qiron = + Qwater

- 0.450 J/(g°C) × mass of iron× (65 °C - 100 °C)= 4.186 J/(g°C) × 50 g× (65 °C - 25 °C)

Solving:

15.75 J/g × mass of iron= 8372 J

mass of iron= 8372 J÷ 15.75 J/g

mass of iron= 531.556 grams

Finally, the mass of iron necessary is 531.556 grams.

Learn more about calorimetry:

brainly.com/question/11586486

brainly.com/question/24724338

brainly.com/question/14057615

brainly.com/question/24988785

#SPJ1

The concentration (molarity) of the final NaCl solution is 175 M.

To find the concentration (molarity) of the final NaCl solution, we can use the equation:

M1V1 = M2V2

Where M1 is the initial concentration, V1 is the initial volume, M2 is the final concentration, and V2 is the final volume.

In this case, we have an initial NaCl solution with a concentration of 2.5 M and a volume of 350 mL (0.350 L). We are diluting this solution to a total volume of 5.0 mL (0.005 L).

Plugging these values into the equation, we have:

(2.5 M) * (0.350 L) = M2 * (0.005 L)

Simplifying the equation:

0.875 = 0.005 * M2

Dividing both sides by 0.005:

M2 = 0.875 / 0.005

M2 = 175M

For such more questions on molarity

https://brainly.com/question/30704561

#SPJ8

The [H₃O⁺] for the solution is less than 1 x 10⁻⁷ M, the solution is considered as basic.

A basic solution is one that has a pH greater than 7. It is also sometimes referred to as an alkaline solution. Basic solutions contain a lower concentration of hydrogen ions (H⁺) than hydroxide ions (OH⁻), meaning that they have a higher concentration of OH⁻.

We know that pH + pOH = 14 at 25°C.

Therefore, pH = 14 - pOH = 14 - 2.33

= 11.67.

Since pH = -log[H₃O⁺], we can rearrange to solve for [H₃O⁺]; [H₃O⁺] = \(10^{(-pH)}\)

= \(10^{(-11.67)}\) = 1.74 x 10⁻¹²) M.

Since the [H₃O⁺] concentration is less than 1 x 10⁻⁷ M, the solution is considered basic.

To know more about basic solution here

https://brainly.com/question/31644174

#SPJ1

Answer:

37.58 g of FeCl₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Fe + 2HCl —> FeCl₂ + H₂

Next, we shall determine the mass of HCl that reacted and the mass of FeCl₂ produced from the balanced equation. This is can be obtained as follow:

Molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Mass of HCl from the balanced equation = 2 × 36.5 = 73 g

Molar mass of FeCl₂ = 56 + (2×35.5)

= 56 + 71

= 127 g/mol

Mass of FeCl₂ from the balanced equation = 1 × 127 = 127 g

SUMMARY:

From the balanced equation above,

73 g of HCl reacted to produced 127 g of FeCl₂.

Finally, we shall determine the mass of FeCl₂ produced by the reaction of 21.6 g of HCl. This can be obtained as follow:

From the balanced equation above,

73 g of HCl reacted to produced 127 g of FeCl₂.

Therefore, 21.6 g of HCl will react to produce = (21.6 × 127)/73 = 37.58 g of FeCl₂.

Thus, 37.58 g of FeCl₂ were obtained from the reaction.

The bactericidal activity of sanitizers prepared from the water will be reduced if the hardness or pH of the water used to prepare EO water or bleach solutions are increased.

Temperature, pH, relative humidity, and water hardness are other physical and chemical variables that affect disinfection processes. For instance, most disinfectants become more active as the temperature rises, but there are some exceptions.

The harder your water is, the less effective cleaning products will be since it will be difficult to make a soapy lather. Scale, which are crusty deposits made by hard water, can build up in your dishwasher or washing machine. Detergent works effectively when used with soft water.

Learn more about disinfection processes here:

https://brainly.com/question/28321155

#SPJ4

Answer:

Solid

Explanation:

Cus its solid, take a brick for example. It's hard and has no space unlike liquid or gas.

The correct answer from the given four options is B: The equilibrium will shift to the left if sulfur trioxide is added to the system.

In chemistry, equilibrium refers to the state of a reversible reaction where the forward and reverse reactions occur at the same rate. In other words, the concentrations of reactants and products remain constant over time, and there is no net change in the amount of each substance. At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction, and the system is said to be in a dynamic state. Equilibrium is an important concept in many areas of chemistry, including acid-base reactions, solubility, and chemical kinetics.

Learn more about equilibrium here:

https://brainly.com/question/30807709

#SPJ1

Burning is a chemical reaction between fuel and oxygen (or other oxidizing agents) in which heat and light energy are produced.

This process is also known as combustion. Combustion is a chemical reaction between a fuel and an oxidant (usually oxygen) that produces heat and light, along with various reaction products, such as carbon dioxide, water vapor, and other gases.

The fuel and oxygen react to form new chemical compounds, releasing energy in the form of heat and light. The chemical equation for burning typically involves the fuel and oxygen reacting to form carbon dioxide and water vapor, as well as other combustion products depending on the type of fuel being burned.

Find out more on combustion here: https://brainly.com/question/29160281

#SPJ1

Water stores energy more efficiently than air under equal conditions.

It requires more energy to heat water than it does to heat air because water has a significantly larger heat capacity and specific heat than air. Compared to air, which has a specific heat of 1.005 J/g degreesC, water has a specific heat of 4.186 J/g degreesC.

Specific heat:

The amount of heat required to raise the temperature per unit mass is known as specific heat capacity. The heat in Joules required to increase the temperature of 1 gram of sample by 1 Kelvin or degree Celsius is often stated. Water is an excellent temperature regulator since it has a very high specific heat capacity.

To learn more about Specific heat refer : https://brainly.com/question/21141291

#SPJ4

Answer:

The initial temperature of the carbon graphite before it was added to the water was 31.69°C.

Explanation:

To calculate the initial temperature, we need to use the formula for heat:

Heat = Specific heat capacity x mass x change in temperature

The heat absorbed by the water is:

Heat absorbed by water = 4.18 J/g°C x 60 g x (24°C - 20°C) = 10,212.8 J

The heat absorbed by the carbon graphite is:

Heat absorbed by carbon graphite = 0.709 J/g°C x 20 g x (Tinitial - 20°C) = 1418.Tinitial - 28360

Since heat is conserved, the heat absorbed by the carbon graphite is equal to the heat absorbed by the water:

1418.Tinitial - 28360 = 10,212.8 J

Tinitial = (10,212.8 + 28360) / 1418 = 31.69°C

The initial temperature of the carbon graphite before it was added to the water was 31.69°C.

You would recover 36.525g of NaCl after evaporating all of the water.

To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:

mass = moles * molar mass

Where:

Moles = Molarity * Volume

Molarity = 0.250 M

Volume = 2500.0 mL = 2.5 L

Molar mass of NaCl = 58.44 g/mol

mass = 0.250 M * 2.5 L * 58.44 g/mol

mass = 36.525 g

Learn about evaporation here https://brainly.com/question/2013258

#SPJ1

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 62 mL

density = 1.02 g/mL

The mass of the water is

mass = 1.02 × 62

We have the final answer as

Hope this helps you

The specific heat capacity of the metal can be calculated using the calorimeter equation. The specific heat capacity of the metal is obtained as 0.406 J/(°C g).

The specific heat capacity of a substance is the heat energy required to raise its temperature by one degree celsius per one gram of that substance.

The calorimeter equation relating heat energy q, mass m and temperature difference ΔT and specific heat capacity c is written as:

q = mcΔT.

In the given system the heat energy is transferred from the metal to water thus the final temperature of both will be 25 °C. Thus, at thermal equilibrium we can write it as:

25 g × c (95 -25 °C) = 25 × 4.18  × (25 - 18.2 °C )

Where, mass of water can be taken as 25 g since its density is 1 g/ml. From this specific heat capacity of the metal c is calculated as follows:

c =  [ 25 × 4.18  × (25 - 18.2 °C ) ] / 25 g ×  (95 -25 °C)

  = 0.406 J/(°C g).

Therefore, the specific heat capacity of the metal is  0.406 J/(°C g).

To find more on calorimeter, refer here:

https://brainly.com/question/4802333

#SPJ1

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.

In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.

Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Learn more about Chemical reaction, refer to the link:
https://brainly.com/question/22817140

#SPJ1

Answer:

x/2

Explanation:

X = 2 molecules of H2

For 2 molecules of H2, there's only 1 molecule of O2. Meaning, there's twice the amount of H2, so O2 = x/2 molecules.

I hope I'm understanding this question right.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the the IUPAC name for N\(_2\)O is nitrous oxide.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

N\(_2\)O, also known as laughing gas, is commonly used by dentists as a sedative and pain reliever during dental procedures. The IUPAC name for N\(_2\)O is nitrous oxide.

Therefore, the the IUPAC name for N\(_2\)O is nitrous oxide.

To learn more about chemical compound, here:

brainly.com/question/26487468

#SPJ1

Answer: 1. dinitrogen monoxide ( iupac name for N2O)

              2.nitrous oxide (common name for N3O)

Explanation:

1. The rms speed of O₂ molecules at 427 K is 576.9 m/s

2. The rms speed of He atoms at 427 K is 1631.7 m/s

The rms speed of the various elements can be obtained as follow:

1. For O₂ molecules

rms speed = √(3RT / μ)

rms speed of O₂ molecules = √(3 × 8.314 × 427 / 0.032)

rms speed of O₂ molecules = 576.9 m/s

2. For He atoms

rms speed = √(3RT / μ)

rms speed of He atoms = √(3 × 8.314 × 427 / 0.004)

rms speed of He atoms = 1631.7 m/s

Learn more about rms speed:

https://brainly.com/question/4413278

#SPJ1

The polarity of a molecule is given by the difference in charges, hydrogen has a slightly positive charge and oxygen has a negative charge. Its electronegativity difference between hydrogen and oxygen is less than 1.7 making the bond a covalent bond.

That said, we can rule out options A and D. Now, the state of matter does not affect the polarity of the molecule, so option B will also be incorrect.

The correct option will be C, since there is a difference in charges that makes water polar.

Answer: C) The uneven bend in the bond between oxygen and hydrogen

The aldol condensation is an organic addition reaction for carbonyl compounds. propanal  undergo aldol addition with other propanal molecule producing the alpha-beta unsaturated aldehyde.

Aldol condensation is an organic reaction of carbonyl compounds taking place in presence of a base to produce beta-hydroxy carbonyl compound. Aldehydes and ketones undergo this type of reaction.

The mechanism of aldol reaction of propanal with 2,2 dimethyl propanal is given here. In the first step, the the base abstract the proton from the aldehyde.

The O- attack the carbonyl carbon of another aldehyde and form a bet-hydroxy aldehyde. This further undergo dehydration forming the alpha-beta unsaturated aldehyde.

Find more on aldol addition:

https://brainly.com/question/29847503

#SPJ1

Answer:

every living thing

Explanation:

its right

Answer:

Everything is made up of cells

Explanation:

Humans, animals, plants, etc.

The presence of large bodies of water helps to stabilize temperature changes in coastal areas.

Water has a high specific heat capacity due to the presence of hydrogen bonding between its molecules. Hydrogen bonding occurs when the positively charged hydrogen atom of one water molecule is attracted to the negatively charged oxygen atom of another water molecule. This bonding is stronger than the typical intermolecular forces found in other substances.

Hydrogen bonding in water requires a significant amount of energy to break, which leads to the high specific heat capacity of water. This means that water can absorb and store a substantial amount of heat energy without a significant increase in temperature. Conversely, when water loses heat, it releases a significant amount of energy before its temperature decreases.

In coastal areas and regions near large bodies of water, the high specific heat capacity of water plays a crucial role in moderating climates. Water acts as a heat sink, absorbing heat during the day and releasing it at night. This leads to milder temperature fluctuations compared to inland areas, which have lower specific heat capacities. As a result, coastal regions experience cooler summers and warmer winters, providing a more moderate climate overall.

The presence of large bodies of water helps to stabilize temperature changes in coastal areas, providing a buffering effect and contributing to the moderation of the climate.

for more such question on temperature visit

https://brainly.com/question/4735135

#SPJ8

TT with Tt

or TT with TT

would give a tall plant

The correct option for the given question about Buffer Solution is Option B) which is maintains a constant or nearly constant pH when small amounts of strong acids or bases are added.

Thus we conclude that when weak acids or bases are supplied in small amounts, the pH remains steady or almost constant.

Learn more about Buffer Solution here:

https://brainly.com/question/26416276

#SPJ2

Polarity is the distribution of electrical charge among the atoms connected by a chemical bond.

1. CH2CL- Carbon has an electronegativity of 2.5, hydrogen has a 2.2 electronegativity, and the chlorine atom has a 3.1 electronegativity. Their electronegativities differ by 0.3 for C-H and 0.6 for C-Cl. The fact that dichloromethane is a polar molecule is therefore confirmed.

2. CH3OH- The C-O bond has a difference in electronegativity of 3.44 - 2.55 = 0.89, which cannot be disregarded. The C-O bond is hence polar. The O-H bond is polar because the difference in electronegativity is 3.44 - 2.2 = 1.24.

3. OF2 - Two O-F covalent bonds can be found in OF2 O F 2. Oxygen has an electronegativity of 3.5. Fluorine has an electronegativity of 4.0. Therefore, there is a 0.5 discrepancy between the electronegativity values. Thus OF2 is polar.

4. CCl4 - Carbon tetrachloride (CCl4) is a non-polar molecule with µ=0

5. BF3 - It is more than 0.5 because the difference between the electronegativity values of B and F is equivalent to 1.94 (3.98 - 2.04 = 1.94). Therefore, each B-F bond in the molecule of boron trifluoride (BF3) is polar.

To learn more about polarity refer- https://brainly.com/question/8229259

#SPJ9

Answer:

Yes

Explanation:

A krypton atom will remain the same despite changing the number of neutrons they contain.

The neutron is a nuclear particle found within an atom.

Answer:

so so

Explanation:

this your question?? <_>

The volume of 12 gas forms when 21 L Cl2 react at STP is 21 L.

To determine the volume of 12 gas (I assume you mean I2 gas) formed when 21 L of Cl2 reacts at STP (standard temperature and pressure), we need to use the ideal gas law equation.

The ideal gas law equation is given by:

PV = nRT

Where:

P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature

At STP, the pressure is 1 atm, and the temperature is 273.15 K.

From the balanced equation, we can see that the molar ratio between Cl2 and I2 is 1:1. So, if 21 L of Cl2 reacts, it will produce an equal volume of I2 gas.

Given that the volume of Cl2 is 21 L, we can assume the volume of I2 gas formed will also be 21 L.

Therefore, the volume of I2 gas formed is 21 L.

For more such questions on volume

https://brainly.com/question/1749900

#SPJ8

Answer:

One atom of sulfur has a mass of 32.07 AMU; one mole of S atoms has a mass of 32.07 g.

Explanation:

Therefore, the answer should be 32.07 g