plz help ❤️
Explain how the pH of water has a synergistic relationship with other substances.
Provide an example.

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

Answer:

it would be B

Explanation:

newtons first law states that an object at rest will stay at rest until another object applies force to the object causing it to move

Answer:

Fractional distillation with the use of a reflux column and careful separation of ethanol fractions, often known as pure grain alcohol (PGA), may create around 96% ethanol and 4% water from either grain, oil or any other source. Search for images of various configuration kinds. Fractional distillation equipment. You can do alcohol enrichment freezes and removes fluid with a higher level of alcohol (sticks a hole into the ice and drains it to the centre). Don't try in a glass container.

Explanation:

Yes, because it describes action-reaction force pairs

Answer:

Mitosis

Mitosis is the process responsible for regeneration and repair. Mitosis helps in cell growth and development.

hi, there!

The ancient atomic theory was proposed in the 5th century bc by the Greek philosophers Leucippus and Democritus

The Gibbs energy of reaction

ΔG is related to the equilibrium constant K

according to the expression

ΔG=ΔG∘+RTlnK

where ΔG∘ is the standard Gibbs energy, R is the universal gas constant with value 8.314×10−3kJmol, and T is the temperature.

At equilibrium, the Gibbs energy of reaction is equal to 0,

ΔG0=ΔG∘+RTlnK.

The standard Gibbs energy is the difference of the standard energies of formation of the products and reactants:

ΔG∘=∑nΔG∘f(products)−∑mmΔG∘f(reactants).

The variables n and m are the coefficients for each species.

From the resource, the standard energies of formation for each of these species are:

ΔG∘f(NOCl(g))=66.3kJmol

ΔG∘f(NO(g))=87.6kJmol

ΔG∘f(Cl2(g))=0kJmol

Giving this reaction a standard Gibbs energy of:

ΔG∘=[2ΔG∘f(NO(g))+ΔG∘f(Cl2(g))]−[2ΔG∘f(NOCl(g))]=[2⋅87.6kJmol+0kJmol−[2⋅66.3kJmol]=42.6kJmol

Using this data and the equation above, the equilibrium constant can be solved as:

K=exp[−ΔG∘RT]=exp⎡⎢⎢⎣−42.6kJmol(8.314×10−3kJmol)(298 K

)= 3.41×10−8

Find out more about Gibbs energy

brainly.com/question/16036702

#SPJ4

Because air puffs up the cream as it is whipped, there is a physical change even though the ingredients are still cream and air.

Physical modifications are those that affect a chemical substance's form but not its chemical content. Physical changes may normally be used to separate compounds into chemical elements or simpler compounds, but they cannot be used to separate mixtures into their component compounds.

Liquid cream is extensively combined with small air bubbles to form the foam colloid known as whipped cream. Because milk is transformed from a colloid (cream) to a solid (butter) without changing its chemical makeup, turning milk into butter is a physical transformation. This change in the body can be undone.

Thus, there is a physical change even though the ingredients are still cream and air.

To learn more about the physical change, follow the link;

https://brainly.com/question/3680148

#SPJ1

Answer:

B) occurs when objects rub against each other

Explanation:

Answer:

B. occurs when objects rub against each other

Explanation:

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. ... Friction always works in the direction opposite to the direction in which the object is moving or trying to move. Friction always slows a moving object down.

Answer:

.

Explanation:

Answer:

The speed of molecules in a gas is directly proportional to the square root of the temperature and inversely proportional to the square root of the molar mass.

Since both gases are at the same temperature, we only need to compare their molar masses.

The molar mass of carbon dioxide (CO2) is 44 g/mol and the molar mass of hydrogen (H2) is 2 g/mol.

Therefore, the square root of the molar mass of hydrogen is smaller than the square root of the molar mass of carbon dioxide.

This means that the speed of hydrogen molecules is greater than the speed of carbon dioxide molecules at the same temperature.

Answer:

A reaction rate is generally the speed (or rate) at which a chemical reaction takes place. It is usually expressed in terms of volume or a unit of time.

Answer:

the speed at which a chemical reaction takes place

The rate constant at a temperature of 160°C for the same reaction described at an initial temperature of 29°C would be 2.26 s⁻¹.

To determine the rate constant at a temperature of 160°C for the same reaction described at an initial temperature of 29°C, we can use the Arrhenius equation:

k2 = Ae^(-Ea/RT2)

where k2 is the rate constant at temperature T2, Ea is the activation energy of the reaction, R is the gas constant, T2 is the final temperature (in Kelvin), and A is the pre-exponential factor.

First, we need to convert the initial temperature of 29°C to Kelvin:

T1 = 29°C + 273.15 = 302.15 K

Assuming the activation energy remains constant, we can solve for k2 using the following equation:

ln(k2/k1) = (-Ea/R) x (1/T2 - 1/T1)

where k1 is the initial rate constant at temperature T1.

Plugging in the given values, we get:

ln(k2/0.0120s⁻¹) = (-Ea/8.314 J/mol·K) x (1/433K - 1/302.15K)

Solving for k2, we get:

k2 = 2.26 s⁻¹

As a result, the rate constant at 160°C for the identical reaction given at 29°C as a beginning temperature would be 2.26 s⁻¹.

To know more about the Reaction, here

https://brainly.com/question/14931215

#SPJ1

Answer:

Molar mass is the mass of one mole of a substance and is ontained by adding atomic mases of all the constituent atoms and group of atoms.

Atomic masses: Cu = 63.55 g/mol,

S = 32.07 g/mol

O x 4 = 16.00 g/mol x 4 = 64.00 g/mol

H = 1.008 g/mol,

So, H2O = (2*1.008+16.00)*5 = 90.10 g/mol

Molar mass of CuSO4,5H2O = 249.72 g/mol.

Out of that 249.72 grams, 90.10 grams is water,

So, percentage by mass of water in CuSO4,5H2O

= 90.10*100/249.72 = 36.08.

I think this is what you are asking. hope this helps

The source of energy in nuclear power plants is optionD. Fission.

The source of energy in nuclear power plants is nuclear fission. Nuclear fission is the process in which the nucleus of an atom, typically a heavy element like uranium or plutonium, is split into two smaller nuclei, releasing a significant amount of energy in the process. This energy is harnessed to generate heat, which is then used to produce steam and drive turbines connected to generators, ultimately generating electricity.

In a nuclear power plant, controlled fission reactions occur in the reactor core, where nuclear fuel, such as uranium-235 or plutonium-239, is used as the fuel source. When these fuel nuclei undergo fission, they release high amounts of energy in the form of heat and also emit additional neutrons, which can sustain a chain reaction if properly controlled.

It's important to note that fusion (option A) is the process of combining two light atomic nuclei to form a heavier nucleus, which also releases a substantial amount of energy. However, fusion reactions have not yet been fully developed for practical energy generation in power plants.

Alpha decay (option B) is a type of radioactive decay where an atomic nucleus emits an alpha particle. Combustion (option C) refers to the process of burning a fuel in the presence of oxygen, which is not the mechanism utilized in nuclear power plants.The correct answer is d.

Know more about  Fission   here:

https://brainly.com/question/3992688

#SPJ8

The molar mass of MgCrO4 is approximately 140.30 g/mol.

To determine the molar mass of MgCrO4 (magnesium chromate), we need to calculate the sum of the atomic masses of each individual element in the compound.

The chemical formula MgCrO4 indicates that the compound consists of one magnesium atom (Mg), one chromium atom (Cr), and four oxygen atoms (O).

The atomic masses of the elements can be found on the periodic table:

Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.

Chromium (Cr) has an atomic mass of around 51.99 g/mol.

Oxygen (O) has an atomic mass of about 16.00 g/mol.

Now, we can calculate the molar mass of MgCrO4 by summing up the atomic masses of each element, considering the respective subscripts:

Molar mass = (Atomic mass of Mg) + (Atomic mass of Cr) + 4 × (Atomic mass of O)

Molar mass = (24.31 g/mol) + (51.99 g/mol) + 4 × (16.00 g/mol)

Molar mass = 24.31 g/mol + 51.99 g/mol + 64.00 g/mol

Molar mass ≈ 140.30 g/mol

for more such questions on mass

https://brainly.com/question/24191825

#SPJ8

Answer:

gravitational and quantum ARE NOT, but electric and magnetic ARE.    there is a similar question to this but it's the exact opposite, so don't get confused

Answer:

False. One mole of a certain substance will always contain \(6.002 \cdot 10^{23}\) atoms of that substance.

Explanation:

Hope this helped!

it contains the number of avogadro of moles which is 6.022*10^23 ,not4,22*10^24 therefore it's false

Answer:

Explanation:

the average rate of change of the concentration =

( initial concentration - final concentration ) / time

Initial concentration = 2.000 M

the average rate of change of the concentration = .0540 M/s

time = 2 s

Putting the values

.0540 =  (2.000 - X ) / 2

0.108 = 2.000 - X

X = 1.892 M .

Final concentration = 1.892 M .

Answer:

B I had the same queastion as this one

Answer:

Hey!

0.867 + 3.72 + 18.0045 = 22.5915

Explanation:

22.5915 ROUNDED TO 2 significant figures...

2 s.f = 23

(3 s.f = 22.6)

SO ROUNDING TO 2 s.f is easier and more accurate...

ANSWER = 23 (2 s.f)

HOPE THIS HELPS!!

The calculation, rounding your answer to the proper number of significant figures would be 22.60.

0.867 +3.72 + 18.0045 =22.60

In positional notation, significant figures refer to the digits in a number that is trustworthy and required to denote the amount of something, also known as the significant digits, precision, or resolution.

As given in the problem we have to perform the calculation, by rounding the answer to the proper number of significant figures.

0.867 +3.72 + 18.0045 =22.5915

                                      =22.59

                                      =22.60

Thus, the calculation, rounding your answer to the proper number of significant figures would be 22.60.

To learn more about significant figures here, refer to the link;

brainly.com/question/14359464

#SPJ2

Explanation:

CONGRATULATIONS!!!!!

Answer:

chemistary more lliek dumastry ahaha

Explanation:

Nothing can be inferred about  neutrons and electrons based on the results of the experiment.

The crux of the Rutherford experiment was the discovery of the planetary model of the atom. In his experiment, what he essentially did was to bombard a thin gold foil with alpha particles.

After the bombardment, he discovered that some of the alpha particles passed through the gold foil purely undeflected , some of the particles were deflected through large angles while yet some of  the alpha particles were bounced back.

On the basis of the observation, he opined that the atom has a central portion which contains a particle that is largely massive and caused the effects observed with the alpha particles. These results show nothing about the neutrons and electrons.

Learn more about Rutherford experiment:https://brainly.com/question/2386617

#SPJ1

The balanced oxidation-reduction equation for the destruction of cyanate ion waste solution from gold-mining operations by treatment with hypochlorite ion in basic solution is:

OCN⁻(aq) + OCl⁻(aq) + 2OH⁻(aq) → CO₂⁻(aq) + N₂(g) + Cl⁻(aq) + H₂O(l)

In this reaction, the cyanate ion (OCN⁻) is oxidized to carbon dioxide (CO₂⁻) and nitrogen gas (N₂), while the hypochlorite ion (OCl⁻) is reduced to chloride ion (Cl⁻). The reaction takes place in basic solution, which provides the hydroxide ions (OH⁻) needed to neutralize the acidic H⁺ ions produced during the oxidation of the cyanate ion.

The reaction is exothermic, releasing heat energy as the products form. This reaction is an effective way to dispose of the cyanate ion waste generated by gold-mining operations, as it converts the hazardous waste into harmless gases and ions.

To learn more about oxidation-reduction equation, here

https://brainly.com/question/13699873

#SPJ1

The formula for the given molecule is: C₂NO₂H₅ which is the chemical formula for ethyl nitrite

Ethyl nitrite is an organic compound with the molecular formula CH₃CH₂ONO. It is a colorless, sweet-smelling liquid that is used primarily in the pharmaceutical industry as a vasodilator, which means it helps to widen blood vessels and increase blood flow.

Ethyl nitrite is also used in the production of some types of polymers and as a reagent in organic synthesis. However, it is important to handle this compound with care, as it is highly flammable and can be toxic if ingested or inhaled in large amounts.

Sure, here's some additional information about ethyl nitrite:

Ethyl nitrite has a variety of medical uses. It is sometimes used to treat heart conditions, such as angina and heart failure, as well as pulmonary hypertension. It is also sometimes used to treat cyanide poisoning and methemoglobinemia, a condition in which the blood is unable to transport oxygen properly.

learn more about Chemical formula here:

https://brainly.com/question/11995171

#SPJ1

Answer:

4.45 atm

Explanation:

Applying,

PV = P'V'............ Equation 1

Where P = Initial pressure of the container, V = Initial volume of the container, P' = Final pressure of the container, V' = Final volume of the container.

make P the subject of the equation

P = P'V'/V........... Equation 2

From the question,

Given: V = 55.2 L, P' = 8.53 atm, V' = 28.8 L

Substitute these values into equation 2

P = (8.53×28.8)/55.2

P = 4.45 atm

Answer:

\(\boxed {\boxed {\sf 4.45 \ atmospheres}}\)

Explanation:

We are asked to find the pressure given a change in volume. The temperature remains constant, so we are only concerned with volume and pressure. We will use Boyle's Law, which states the volume of a gas is inversely proportional to the pressure. The formula for this law is:

\(P_1 V_1= P_2V_2\)

The initial pressure is unknown, but the volume starts at 55.2 liters.

\(P_1 * 55.2 \ L = P_2V_2\)

The volume is reduced to 28.8 liters and the pressure is 8.53 atmospheres.

\(P_1 * 55.2 \ L = 8.53 \ atm * 28.8 \ L\)

We are solving for the initial pressure, so we must isolate the variable P₁. It is being multiplied by 55.2 liters. The inverse operation of multiplication is division, so we divide both sides of the equation by 55.2 L.

\(\frac {P_1 * 55.2 \ L }{55.2 \ L}= \frac{8.53 \ atm * 28.8 \ L}{55.2 \ L}\)

\(P_1= \frac{8.53 \ atm * 28.8 \ L}{55.2 \ L}\)

The units of liters (L) cancel.

\(P_1= \frac{8.53 \ atm * 28.8 }{55.2}\)

\(P_1=\frac{245.664 }{55.2 } \ atm\)

\(P_1 = 4.45043478261 \ atm\)

The original measurements of volume and pressure have 3 significant figures, so our answer must have the same. For the number we calculated, that is the hundredths place. The 0 in the thousandths place tells us to leave the 5.

\(P_1 \approx 4.45 \ atm\)

The initial pressure inside the container is approximately 4.45 atmospheres.

Answer: D

Explanation: