What is the molarity of a NaOH solution if 25. 0 mi is required to completely neutralize


40. 0 ml of a 1. 5 M solution of H2SO4?

Answer:

a

Explanation:

Answer:

2) It is neither a synthesis reaction nor a decomposition reaction because two reactants form two products.

Explanation:

This is not a synthesis reaction, which takes place when two or more reactants combine to form one product. This is a single replacement reaction, where the cation of an ionic compound "trades places" with another element that becomes the cation in a new ionic compound.

If a change in the ecosystem caused the number of species to stay the same and the total number of individuals to increase then The biodiversity index would increase".

An ecosystem's efficiency (the quantity of food energy transformed into biomass) and the quality of its services (which frequently include preserving the soil, cleaning the water that runs through it, as well as providing food and shade, etc.) both decrease with declining biodiversity.

An ecosystem's efficiency (the quantity of food energy transformed into biomass) as well as the quality of its services (which frequently include preserving the soil, cleaning the water which flows through it, as well as providing food as well as shade, etc.) both decrease with declining biodiversity.

Therefore, the correct option will be (4)

To know more about biodiversity index

https://brainly.com/question/14437032

#SPJ1

Homeostasis is the process by which a body is able to adapt to different conditions and keep the body in relatively stable internal conditions at all times.

During homeostasis, blood helps regulate the body temperature by eliminating excess heat, maintaining the pH balance of the body, and maintaining the internal osmotic pressure.

The immune system assists in homeostasis by screening and destroying pathogens and helps prevent autoimmunity as well as regulates immune reactions periodically. If the immune system fails to do these processes, then it may result in the appearance of cancer.

To learn more about Homeostasis:

https://brainly.com/question/1182383

Answer:

c

Explanation:

Answer:

true

Explanation:

we need gravity to stay on ground

Answer:

True.

Explanation:

Weight in a physics or scientific sense is defined mathematically as "mass times gravity." It is literally a measure of the force of gravity pulling mass downward towards Earth (or whatever object you're considering).

Answer:

one

Explanation:

The density of the substance having a mass of 2.0 g is 0.4 g/mL (Option D)

First, we shall obtain the volume of the substance. This can be obtained as follow:

Volume of substance = (Volume of water + substance) - (Volume of water)

Volume of substance = 75 - 70

Volume of substance = 5 mL

Finally, we shall determine the density of the substance. This is illustrated below:

Density = mass / volume

Density of substance = 2 / 5

Density of substance = 0.4 g/mL

Thus, the density is 0.4 g/mL (Option D)

Learn more about density:

https://brainly.com/question/952755

#SPJ1

In this week's thin-layer chromatography experiment, the use of 1 M HCl will demonstrate the dependence of dye color on pH. Thin-layer chromatography (TLC) is a versatile technique for separating components of a mixture, specifically, it's used to separate organic molecules. TLC is typically used to identify and quantify the amount of the components present in a mixture.

TLC plates, which are made of glass, metal, or plastic and coated with a thin layer of silica gel or alumina, are used to conduct the experiments. The mobile phase moves through the stationary phase as the samples move through it. The mobile phase moves up the plate, and the less polar components move up the plate with it. Content loaded in this week's thin-layer chromatography experiment, the use of 1 M HCl will demonstrate the dependence of dye color on pH. The elution of dyes from food and candy products is commonly used in TLC. When an acid is added to the dye mixture, the pH changes, resulting in the appearance of a different color.

The basic principle behind this is the effect of pH on the chemical equilibrium, which can affect the appearance of the dye. This demonstrates how the color of dyes is dependent on pH, which can be observed using a TLC plate.

To know more about chromatography experiments visit:

https://brainly.com/question/15205252

#SPJ11

Approximately 2.89 grams of dry NH₄Cl need to be added to 2.00 L of a 0.500 M solution of NH₃ to prepare a buffer solution with a pH of 8.88.

Use the Henderson-Hasselbalch equation to calculate the required amount of NH₄Cl,

pH = pKa + log([NH₄⁺]/[NH₃])

[NH₄⁺] = [NH₃] x 10^(pH - pKa)

Substituting the given values,

[NH₃] = 0.500 M

pH = 8.88

pKa = 9.24

[NH₄⁺] = 0.500 M x 10^(8.88 - 9.24) = 0.027 M

To calculate the amount of NH₄Cl needed to make 2.00 L of a 0.027 M solution,

moles of solute = molarity x volume (in liters)

moles of NH₄Cl = 0.027 M x 2.00 L = 0.054 mol

The molar mass of NH₄Cl is 53.49 g/mol, so the mass of NH₄Cl needed is,

mass = moles x molar mass = 0.054 mol x 53.49 g/mol ≈ 2.89 g

To know more about buffer solution, here

brainly.com/question/15054633

#SPJ4

The formation of acetic acid from carbon dioxide and hydrogen is a spontaneous reaction, meaning it occurs naturally without any external energy input. This reaction is exothermic, meaning it releases energy in the form of heat.

If the statement were changed to say that the reaction was non-spontaneous, meaning it requires an external energy input to occur, then one possible reason for this would be that the reaction has a high activation energy barrier. In this case, the reaction may not occur without an energy source to overcome this barrier, such as high temperatures, pressures, or catalytic agents.

However, based on current scientific understanding, the formation of acetic acid from carbon dioxide and hydrogen at hydrothermal vents is believed to be a spontaneous reaction that is catalyzed by minerals found in the vents. The reaction is thought to occur in the presence of metal sulfides and other minerals that act as catalysts, lowering the activation energy barrier and allowing the reaction to proceed more readily.

For such more question on exothermic:

https://brainly.com/question/2924714

#SPJ4

Energy required to heat 40.7g of water from -10 degree C to 70 degree C is 26341.04J.

Specific heat of ice = 2.06 J g-1 degree C-1

Specific heat of water = 4.18 J g-1 degree C-1

Energy required to convert ice from -10 degree C to 0 degree C,

Q1 = m . cice . DT = 40.7 x 2.06 x [ 0 – (-10)] = 40.7 x 2.06 x 10

Q1 = 838.42J

Energy required to convert ice into water at 0 degree C,

Q2 = m . DHfus  = 40.7 x 334 = 13593.8J

Energy required to heat water from 0 degree C to 70 degree C,

Q3 = m . cwater . DT = 40.7 x 4.18 x [70 – 0] = 40.7 x 4.18 x 70

Q3 = 11908.82J

Total energy required = Q1 + Q2 + Q3 = 26341.04J

To learn more about specific heat, click here: brainly.com/question/21041726

#SPJ4

pH of a solution prepared by dissolving 0.150 mol acetic acid and 0.300 mol sodium acetate in water sufficient to yield 1.00L of solution is 5.0457.

What is acetic acid?

Acetic acid, also known as ethanoic acid, is an organic acid that is colorless, clear, and has a pungent odor. The carboxylic acid, which has a strong sour taste, is commonly utilized in the food sector.

What is Sodium Acetate?

Sodium acetate is a water-soluble, non-toxic white crystalline compound with the formula \(CH_3COO^-Na^+\). It is commonly used in the food, paper, and textile industries as a pH regulator, buffer, and emulsifier.

The pH of a solution made by combining 0.150 mol of acetic acid (\(CH_3COOH\)) and 0.300 mol of sodium acetate (\(CH_3COO^-Na^+\)) in water that yields 1.00L of solution can be calculated using the following formula:

pH= pKa + log(\(\frac{[salt]}{[acid]}\))

pH= -log(Ka) + log(\(\frac{[salt]}{[acid]}\))

pH= -log(\(1.8\times 10^{-5}\)) + log(\(\frac{0.300}{0.150}\))

pH= 5.0457

Therefore, pH of a solution prepared by dissolving 0.150 mol acetic acid and 0.300 mol sodium acetate in water sufficient to yield 1.00L of solution is 5.0457.

To learn more about pH refer to: brainly.com/question/11903281

#SPJ11

Answer:

Orion Nebula

Explanation:

That is an enormous cloud of gas and dust

the molarity of zinc sulfate in the resulting solution is 0.24 M

Calculation :

n=m/M

n(NaI)=4.60g/(149.89g/mol)=0.030mol(NaI)​)

C=n/V

C(NaI)=0.030mol/0.125L=0.24M

The answer is 0.24 M

Molarity (also called molarity, bulk concentration, or substance concentration) is a measure of the concentration of a chemical species, especially a solute, in solution, expressed as the amount of substance per unit volume of solution. In chemistry, the most commonly used unit of molarity is moles per liter, symbolized in SI units as mol/L or mol/dm3. A solution with a concentration of 1 mol/L is called 1 molar, commonly called 1 M.

Learn more about Molarity Here : https://brainly.com/question/17138838

#SPJ4

a) The capacity to do work or to supply heat is energy.

b) Energy stored within a substance due to its chemical composition is chemical potential energy.

c) A reaction that absorbs energy is called an endothermic reaction.

d) The law that says in any chemical or physical change, energy can neither be created nor destroyed, only changed in form is the law of conservation of energy.

e) Thermochemistry is the study of energy changes that occur during chemical and physical changes.

Conversions:

a) 650 cal to joules:

1 calorie (cal) = 4.184 joules (J)

Therefore, 650 cal = 650 * 4.184 J = 2716 J

b) 444 joules to calories:

1 joule (J) = 0.2390 calories (cal)

Therefore, 444 J = 444 * 0.2390 cal = 106.116 cal

c) 1,280 cal to kilojoules:

1 kilojoule (kJ) = 239.0 calories (cal)

Therefore, 1,280 cal = 1,280 / 239.0 kJ = 5.352 kJ

d) 0.71 kcal to kilojoules:

1 kilocalorie (kcal) = 4.184 kilojoules (kJ)

Therefore, 0.71 kcal = 0.71 * 4.184 kJ = 2.97364 kJ (rounded to four decimal places)

e) 0.72 kcal to joules:

1 kilocalorie (kcal) = 4.184 kilojoules (kJ)

0.72 kcal = 0.72 * 4.184 kJ = 3.02048 kJ (rounded to five decimal places)

1 kilojoule (kJ) = 1,000 joules (J)

Therefore, 3.02048 kJ = 3.02048 * 1,000 J = 3,020.48 J

f) 0.65 kcal to calories:

1 kilocalorie (kcal) = 1,000 calories (cal)

Therefore, 0.65 kcal = 0.65 * 1,000 cal = 650 cal

g) 0.41 kcal to joules:

1 kilocalorie (kcal) = 4.184 kilojoules (kJ)

0.41 kcal = 0.41 * 4.184 kJ = 1.71324 kJ (rounded to five decimal places)

1 kilojoule (kJ) = 1,000 joules (J)

Therefore, 1.71324 kJ = 1.71324 * 1,000 J = 1,713.24 J

h) 1.53 kcal to joules:

1 kilocalorie (kcal) = 4.184 kilojoules (kJ)

1.53 kcal = 1.53 * 4.184 kJ = 6.39952 kJ (rounded to five decimal places)

1 kilojoule (kJ) = 1,000 joules (J)

Therefore, 6.39952 kJ = 6.39952 * 1,000 J = 6,399.52 J

Learn more about Thermochemistry here -: brainly.com/question/26035962

#SPJ11

The formula is: weight/mass = gravitational field strength. On Earth the gravitational field strength is 10 N/kg. Other planets have different gravitational field strengths.

The acceleration of gravity on that planet is equal to 2.04 N/Kg.

Acceleration due to gravity can be described as the acceleration gained due to gravitational force. The S.I. unit of gravity is m/s² and has both magnitude and direction, as a vector quantity.  The surface of the earth at sea level has a value of g of 9.8 m/s².

The gravitational force acting will be given by: F = GMm/R², where G is the universal gravitational constant G = 6.67×10⁻¹¹Nm²kg⁻². The gravitational force is attractive and acts on the bodies the distance between them will reduce.

Given, the weight of the object on the planet, W = 600 N

The mass of the object, m = 294.56 Kg

We know that the weight of the object is mass times of the gravitational acceleration.

W = mg

g = W/m

g = 600N/294.56 Kg

g = 2.04 N/Kg

Therefore, the acceleration of gravity on that planet is 2.04 N/Kg.

Learn more about the acceleration of gravity, here:

https://brainly.com/question/12792214

#SPJ2

Answer:

turgor pressure can be done in a lab or a self test.

turgor pressure is key to the plant’s vital processes. It makes the plant cell stiff and rigid. Without it, the plant cell becomes flaccid. Prolonged flaccidity could lead to the wilting of plants.

Turgor pressure is also important in stomate formation. The turgid guard cells create an opening for gas exchange. Carbon dioxide could enter and be used for photosynthesis. Other functions are apical growth, nastic movement, and seed dispersal.

Explanation:

Answer:

What are the correct coefficients when this chemical equation is

balanced? *

P4 + 02 P2O5

Explanation:

For this reaction we have a combination reaction. Balancing Strategies: This combination reaction is a lot easier to balance and if you can get an even number of oxygen atoms on the reactants side of the equation.

Answer:

applied force .....I'm pretty sure

Answer:

A. Applied forces aka Contact forces

Explanation:

Thos force is created when you apply forces to an object as in a push/pull or other physical ways.

I hope it helps! Have a great day!

Anygays-

Answer:

1.6×10^3 KJ

Explanation:

We must first calculate the number of moles corresponding to 650.50g of sulphur trioxide.

Number of moles = mass of sulphur trioxide/ molar mass of sulphur trioxide

Molar mass of sulphur trioxide= 80.066 g/mol

Given mass of sulphur trioxide= 650.50g

Number of moles = 650.50g / 80.066 g/mol

Number of moles = 8.124 moles of sulphur trioxide

Now from the balanced reaction equation;

Formation of 2 moles of sulphur trioxide evolves 396.8KJ of energy.

Therefore formation of 8.124 moles of sulphur trioxide will evolve;

8.124moles × 396.8 KJ /2 moles = 1611.8KJ or 1.6×10^3 KJ

Answer:

Use the chart below to help you. Follow the arrows

Explanation:

For instance, number 8 is where liquid is going to solid. The chart tells you that it's freezing.

Inactivation of the beta-2 adrenergic receptor will most likely result in an increase in the cell's rate of glycogen production.

According to Figure 1, the stimulation of glycogen breakdown and inhibition of glycogen synthesis result from the activation of beta-2-adrenergic receptors. Because glycogen synthesis is no longer hindered, the immediate result of the deactivation of beta-2-adrenergic receptors is an increase in the rate of glycogen synthesis in cells. Because glycogen phosphorylase may have been deactivated, the breakdown of glycogen in cells is no longer encouraged.

This multiple-choice query is:

A. Cyclic AMPAMP concentrations within cells will rise.

B. Protein kinase A's enzymatic activity will rise.

C. Glycogen phosphorylase will become more active.

D. The cell's rate of synthesising glycogen will quicken.

The correct option is D.

Learn more about glycogen synthesis:

brainly.com/question/3245151

#SPJ4

The correct statement about the buddy system for allocating memory is:

C. With the buddy system, memory segments can be either divided or coalesced to satisfy an allocation request.

The buddy system is a memory allocation technique used in operating systems. It divides memory into fixed-size blocks or segments, typically in powers of two. When a memory allocation request is made, the system looks for a free block of suitable size. If the block is larger than required, it can be divided or split into smaller blocks to satisfy the request. Conversely, if adjacent blocks are free, they can be coalesced or merged to form a larger block for allocation.

A. The buddy system is not specifically designed for quickly allocating pages on demand for user-space applications. It is a general memory allocation strategy used in various contexts.

B. The buddy system may still result in internal fragmentation. Internal fragmentation occurs when allocated memory blocks are slightly larger than the requested size, leaving unused space within the block.

D. The buddy system does not guarantee physically contiguous memory allocation. It can allocate memory from different available blocks, which may or may not be physically contiguous.

Therefore, the only true statement is C. With the buddy system, memory segments can be either divided or coalesced to satisfy an allocation request.

To know more about system visit:  

https://brainly.com/question/13453484

#SPJ11

Answer:

P₂ = 130.18 kPa

Explanation:

In this case, we need to apply the Gay-Lussack's law assuming that the volume of the container remains constant. If that's the case, then:

P₁/T₁ = P₂/T₂   (1)

From here, we can solve for the Pressure at 273 K:

P₂ = P₁ * T₂ / T₁   (2)

Now, all we need to do is replace the given data and solve for P₂:

P₂ = 340 * 273 / 713

Hope this helps

Answer:

both Non metal's G

Explanation:

i did the test

Answer:

I think it is K.

Explanation:

It is has more gas than the others.

Answer:

K

Explanation: K(Potassium) is actually a very weak metal that is usually in solid form. All of the other options(Hydrogen, Oxygen, and Nitrogen) are nonmetals that are usually gasses.

Answer:

it D because it make more sense

One of the characteristics of gases is that gases are highly compressible. The correct option is C.

Gases possess several characteristic properties that distinguish them from other states of matter such as solids and liquids. The key properties of gases are as follows:

1. Expansion: Gases have the ability to expand and fill the entire available space of a container. They lack a definite shape or volume, and their particles are widely spaced.

2. Compressibility: Gases are highly compressible compared to solids and liquids. Under increased pressure, the volume of a gas decreases significantly, allowing it to be compressed into a smaller space.

3. Fluidity: Gases flow readily and can be easily poured or transferred from one container to another. They do not exhibit any resistance to shear forces and can easily mix with other gases.

4. Low Density: Gases have a low density compared to solids and liquids. The particles in a gas are far apart, resulting in a low mass per unit volume.

5. Diffusion and Effusion: Gaseous particles are in constant random motion and undergo diffusion, spreading out and mixing with other gases. They also exhibit effusion, which refers to the escape of gas molecules through tiny openings or pores.

6. High Kinetic Energy: Gas molecules possess high kinetic energy and move rapidly in all directions. The average speed of gas particles increases with higher temperatures.

7. Pressure: Gases exert pressure on the walls of their container due to the collisions between the gas particles and the container. The pressure of a gas is directly proportional to its temperature and the number of gas particles.

These properties collectively characterize gases and are a result of the weak forces of attraction between gas particles, allowing them to move freely and independently.

The correct option is C) Gases are highly compressible.

To know more about gases refer here:

https://brainly.com/question/9696086#

#SPJ11

A) Gases have a definite shape.

B) Gases are not affected by changes in pressure.

C) Gases are highly compressible.

D) Gases have a high density.

Answer:Answer:

40-18 fl =>40-cl+cl+0-1e sorry if im rong

Explanation:

When \(^1^8F\) undergoes positron emission, the product nucleus is, \(^1^8O\).

In positron emission, also called positive beta decay (β+ decay), a proton in the parent nucleus decays into a neutron that remains in the daughter nucleus, and the nucleus emits a neutrino and a positron, which is a positive particle like an ordinary electron in mass but of opposite charge.

When a proton is converted into a neutron then the positron emission takes place as follows.

\(^1_1p\;\rightarrow\;^1_0n\;+\;^0_+1e\)

A positron is represented by the symbol. Therefore, when a positron emission occurs then the resultant nuclei atomic number decreases by a unit mass.

The general equation representing positron emission is as follows.

\(^M_ZA\;\rightarrow\;^M_Z_-_1 B\;+\;^0_+1e\)

Hence, fluorine-18 decays by positron emission as follows.

\(^1^8_9F\;\rightarrow\;^1^8_8n\;+\;^0_+1e\)

Therefore, when \(^1^8F\) undergoes positron emission, the product nucleus is, \(^1^8O\).

Learn more about positron emission here:

https://brainly.com/question/14472781

#SPJ2