What time of day is it in location A?
A.
sunrise
B.
daytime
C.
nighttime
D.
sunset

Answer:

36kj/mol

Explanation:

Answer:

hunit

Explanation:

5

Considering the definition of pH, the pH is the last option, 4.77.

In firts place, you need to know that pH is a numerical scale used to specify the acidity or alkalinity of a solution. The pH is related to hydrogen ions, since it indicates the amount of these ions present in a solution or substance.

Mathematically, pH is defined as the opposite of the base 10 logarithm or the negative logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions:

pH= -log [H⁺]

The pH scale varies from 0 to 14, being acidic solutions with a pH lower than 7 and basic those with a pH greater than 7, while the pH value 7 corresponds to neutral substances.

In this case, being [H+]=1.7×10⁻⁵ M, you can replace this value in the definition of pH:

pH= -log (1.7×10⁻⁵ M)

Solving:

pH=4.77

Then, the pH is 4.77.

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Answer:

Humus

Explanation:

D

Humus gives the soil its high fertility. Therefore, the correct option is option D among all the given options.

The living, porous media that has grown in the top layer of the Earth's crust is known as soil. As a source of nutrients and water, a filter for harmful wastes, a site for their breakdown, and a participant for the cycle of carbon and various other elements throughout the planet's ecosystem, soil is one of the main substrates of life on Earth.

It has changed as a result of weathering processes influenced by geographical, geologic, biological, and climatic factors. A practical understanding of soils as well as their management has also developed out of need since the development of crops and forests in the eighth millennium BCE. Humus gives the soil its high fertility.

Therefore, the correct option is option D.

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Ideal gas law is valid only for ideal gas not for vanderwaal gas. Charles' gas law is used here. Therefore the new pressure of  the given gas is 5.63 atm.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Vanderwaal gas acts as ideal gas at low pressure and high temperature. There is no forces of attraction between the particles of an ideal gas.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

At constant volume

P₁/T₁ = P₂/T₂

32.0 psi ÷298 K =P2÷348 K

P2 = 7.55÷1.34 = 5.63 atm

Therefore the new pressure of the given gas is  5.63 atm.

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Answer:

A solution of acetic acid that is 60.0% HC₂H₃O₂ (by mass) indicates that it contains 60.0 g of acetic acid and 100.0 g of water.

Explanation:

A percentage is a way of expressing an amount as a fraction of 100. The mass percentage corresponds to physical units of the solutions and they allow to establish more precisely the concentration of the solutions and express them in terms of percentages.

Mass percentage indicates the amount in grams of solute per 100 grams of solution.

So a solution of acetic acid that is 60.0% HC₂H₃O₂ (by mass) indicates that it contains 60.0 g of acetic acid and 100.0 g of water.

Answer:

The density of tube A is greater then the density of tube B having more mass inside of the smaller area.

Explanation:

Answer:

A is denser.

Explanation:

Answer:a

Explanation:

Answer:

The number of moles of B that will completely react with;

8 moles of A is 12 moles of B

9 moles of A is 13.5 moles of B

3 moles of A is 4.5 moles of B

10 moles of A is 15 moles of B

Explanation:

From the reaction, we have the mole ratio of the reactants is 2 moles of A combines with 3 moles of B to form 3 moles of C

Therefore, one mole of A which is 2 moles/2 will combine with 3/2 moles of B

Hence 8 moles of A will combine with 8×3/2 or 12 moles of B

9 moles of A will combine with 9×3/2 or 13.5 moles of B

3 moles of A will combine with 3×3/2 or 4.5 moles of B

10 moles of A will combine with 10×3/2 or 15 moles of B

The number of moles of B reacted in each case is obtained by stoichiometry.

The representation of a chemical process on paper is known as a chemical reaction equation. It must consist of a reactant side and a product side. The reactants combine to yield the product.

Given the reaction; 2A + 3B → 3C, we can see that the mole ratio of the reactants is 2 : 3. Hence;

2 moles of A reacts with 3 moles of B

8 moles of A reacts with  8 moles × 3 moles/2 moles

= 12 moles B

2 moles of A reacts with 3 moles of B

9 mol of A reacts with 9 mol × 3 moles/2 moles

= 13.5 moles of B

2 moles of A reacts with 3 moles of B

3 mol of A reacts with  3 mol × 3 moles/2 moles

= 4.5 moles of B

2 moles of A reacts with 3 moles of B

10 mol of A reacts with 10 mol × 3 moles/2 moles

= 15 moles of B

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A pile of laundry would have the highest entropy among the given options because it can have many configurations and does not display particular order, making its state more disordered. A building made of bricks has smaller entropy than a pile of bricks because it has fewer arrangements (microstates) that maintain its orderly structure (macrostate).

The concept of entropy is associated with the idea of disorder in a system, with a system having high entropy being in a more disordered state. When comparing the options given (a stack of books, a house of cards, a house made of blocks, and a pile of laundry), the pile of laundry would have the highest entropy. This is because it can be arranged in a considerable number of configurations, as it does not display any particular order. In contrast, a stack of books, a house of cards, and a house made of blocks are all structured arrangements with lower entropy due to fewer configurations being available to them.

Explaining why a building made of bricks has smaller entropy than the same bricks in a disorganized pile: an organized structure, like a building made of bricks, has only a limited number of ways it can be put together (microstates) to maintain its orderly structure (macrostate), thereby representing a state of low entropy. On the other hand, a disorganized pile of bricks can be arranged in a vast number of ways, leading to a higher count of microstates and therefore, a higher entropy.

Final answer:

The highest entropy would be associated with a pile of laundry.

Explanation:

The concept of entropy in physics relates to the degree of disorder or randomness in a system. In this context, entropy is a measure of the number of ways a particular macrostate (arrangement or configuration) can be achieved by the microstates (individual arrangements of the system's elements).

Out of the given options, the highest entropy would be associated with a pile of laundry (option D). This is because laundry in a pile has a high degree of randomness and can be arranged in numerous ways, resulting in a large number of microstates. On the other hand, the stack of books (option A), house of cards (option B), and house made of blocks (option C) have lower entropy because they have a more ordered and structured arrangement, limiting the number of achievable microstates.

Answer:

0.0648 mols

Explanation:

Answer:

I'm pretty sure it's A but I am not 100 present

hope this helps ❤️

Answer: i think that it was 800 mg

Explanation:

Answer:   Hello!

False

Explanation:

hope you do good!they are in ur food though

Answer:

false

Explanation:

they're in food but doesnt make them food

Answer:

The answer above is correct - the right option is A.

Explanation:

Hope this helped confirm!

Answer: A chemical reaction is a process in which some substances change into different substances. Substances that start a chemical reaction are called reactants. Substances that are produced in the reaction are called products. Reactants and products can be elements or compounds.

Answer:

A

Explanation:

This picture represents a stationary front. Stationary fronts often form clouds and, in particularly low pressure, have rain or snow. Therefore, the first answer choice is correct. Hope this helps!

Answer: Static electricity will help in seed dispersal in cone bearing seeds.

Explanation:

Static electricity is the stationary electric charge produced by the friction. The static electricity can be produced by the turbulence or air currents in the storm clouds. This is responsible for the cause of lightening phenomena.

The cone bearing seeds exhibit cones that are hard and woody in nature.  The static electricity due to the effect of lightening generate electrical shock which breaks open the cone and disperse the seeds. Thus the static electricity is important for seed dispersal in cone bearing trees.

The movement of material from a more crowded area to a less crowded area is called diffusion, which achieves equilibrium when the concentration of molecules is equal in both areas.

The movement of material from a more crowded area to a less crowded area is known as diffusion. This natural process involves molecules moving from an area of higher concentration to an area of lower concentration. The process continues until the concentration of molecules is equal in both areas, achieving a state called equilibrium.

Diffusion is also described as the movement of solutes "down the concentration gradient." Osmosis is a specific type of diffusion pertaining to the movement of water across a semi-permeable membrane due to a concentration difference. However, since the question does not specify water or a semi-permeable membrane, the best answer would be option A, which is Diffusion. Respiration and photosynthesis, on the other hand, are biological processes involved in energy conversion and do not describe the movement of materials from a more crowded to a less crowded area.

Answer:

-2

Explanation:

eACH ELEMENT HAS AN SPECIFIC VALENCE, FOR EXAMPLE, CARBON (+2),+4 IN THE CASE OF OXYGEN IS -2

In this chemistry question, the volume of KOH required to reach the equivalence point in this titration is 8.57 mL. This was calculated by first determining the moles of HNO3 in the solution and then using this to determine the equivalent volume of KOH.

In a titration, the volume of one solution required to neutralize another can be calculated using the concept of equivalence points and moles. Since the reaction between HNO3 and KOH is a 1:1 reaction, we can first calculate the moles of HNO3 in the solution: 0.120 mol/L * 0.060 L = 0.0072 mol. In a 1:1 reaction, equal moles of both reactants are required, so the amount of KOH needed is also 0.0072 mol. The concentration of KOH is given as 0.840 M, so we can calculate the volume (V) needed using the formula V = Moles/Concentration. Hence, the volume of KOH needed is 0.0072 mol / 0.840 mol/L = 0.00857 L or 8.57 mL.

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To find the volume of KOH required to reach the equivalence point in a titration with HNO₃, we use the molarities and volumes given, and apply the stoichiometry of the balanced equation, which in this case is a 1:1 molar ratio. The required volume of KOH is calculated to be 8.571 mL.

The question asks to calculate the volume of KOH required to reach the equivalence point in a titration with HNO₃. The balanced chemical equation for the reaction is:

HNO₃ (aq) + KOH (aq) → KNO₃ (aq) + H2O (l)

At the equivalence point, the moles of HNO₃ will be equal to the moles of KOH due to the 1:1 molar ratio of their reaction:

Moles of HNO₃ = 0.060 L × 0.120 M = 0.0072 mol

Using the molarity of KOH, we can find the volume needed:

Volume of KOH = Moles of HNO₃ / Molarity of KOH = 0.0072 mol / 0.840 M = 0.008571 L or 8.571 mL

Therefore, 8.571 mL of 0.840 M KOH is required to reach the equivalence point when titrating 60.0 mL of 0.120 M HNO₃.

Answer:

From primary consumer to secondary consumer; that is the answer!

Answer: "From primary consumer to secondary consumer"

Explanation:

I took the test (good luck)

Answer:

A) 29.9g

Explanation:

first find the weight of 1 staple.

then multiply with 225

Answer: A

Explanation: 1.33/10 = .133

.133* 225 = 29.925 which is about 29.9 grams

Answer:

nitric acid

Explanation:

Answer:

This is to make sure that the experiment is precise as outside disturbance could cause false outcome

Explanation: because of the waste and junk put into the ocean that must of backfired to the land and the wind would blow stuff at the area hope this helped because I'm not 100% certain

Answer:

The earthquake produced a tsunami that caused the destruction.

Explanation:

The earthquake produced a tsunami that caused the destruction.

Answer:

a- NaCl + H20

Answer:

4 moles

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!