Multicellular animals exhibit cell specialization, which means –


They have larger cells.


All cells perform every necessary task for life.


They have cells that do not need oxygen.


Cells have distinct and different jobs and functions in the body.

Explanation:

eam=%abudance×mass+%abudance×mass

eam=19.8%×10.013/100+80.2%×11.009/100

eam=198.2574/100+882.9218/100

eam=1081.1792/100

eam=10.811792

eam=10.812

A property of water is that it requires less heat than ethanol to raise its temperature.

Among the given options, the property of water that stands out is that it requires less heat than ethanol to raise its temperature. This property is known as the high specific heat capacity of water.

Water has a relatively high specific heat capacity compared to many other substances, including ethanol.

This means that it takes a larger amount of heat energy to raise the temperature of water compared to ethanol for the same mass of the substance.

The high specific heat capacity of water is attributed to hydrogen bonding between water molecules.

These hydrogen bonds result in a significant amount of energy being required to break the intermolecular forces and raise the temperature of water. As a result, water can absorb and store a considerable amount of heat energy without undergoing a significant temperature change.

In contrast, ethanol has a lower specific heat capacity, meaning it requires less heat energy to increase its temperature compared to water.

This property of water plays a vital role in regulating Earth's temperature and climate, as water bodies can absorb and release heat energy, helping to moderate temperature changes in the environment.

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The volume of a 0.284 M hydrochloric acid solution is required to neutralize 23.5 mL of a 0.145 M barium hydroxide solution is 23.9 mL.

The equation is given as:

Ba(OH)₂    +  2HCl     ------>   BaCl₂    +   2H₂O

from the equation it is clear that :

1mole of Ba(OH)₂  = 1 mole of HCl  

number of moles of Ba(OH)₂ = volume × Molarity

                                                =  0.0235 × 0.145

                                                = 0.0034 mol

Therefore, number of moles of HCl = 2× 0.0034 mol = 0.0068 mol

volume of HCl = moles / Molarity

                        = 0.0068 / 0.284

                        = 0.0239 L = 23.9 mL

Thus, The volume of a 0.284 M hydrochloric acid solution is required to neutralize 23.5 mL of a 0.145 M barium hydroxide solution is 23.9 mL.

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Answer:

Applied science is a discipline that is used to apply existing scientific knowledge to develop more practical applications, for example: technology or inventions. In natural science, basic science (or pure science) is used to develop information to explain phenomena in the natural world.

Answer:

• Because engineers apply science and its theories into practical situation

Take an example of;

→ A generator: When creating a generator, electromagnetic induction theorem is applied. [ self and mutual inductance ]

→ A plane: The wings are made in considerance of Bernoulli principle and viscous drag

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Answer:

Amino acids

Explanation:

Since amino acids are the building blocks of protein,when protein is broken down by enzymes called proteases it becomes Amino acids.

I hope this helps:)

Answer:

Explanation:

Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.

It is very dangerous to hear anything loud or cause any impact or shock while working with nitroglycerin because it can cause an explosion. Therefore, you cannot hear a dump truck driving through a nitroglycerin plant due to the danger it poses to the employees and the facility.

Nitroglycerin is an explosive material that is highly sensitive to impact, heat, or friction. It is also a primary explosive, which means that it can detonate by itself without any external stimulus. This property makes nitroglycerin one of the most dangerous substances on the planet. As a result, it is always stored in a safe location and transported with the utmost care and security to prevent accidental explosions.

When working with nitroglycerin, it is essential to follow strict safety protocols and procedures to ensure the safety of the employees and the facility. Any loud noise or impact can cause a shock wave that can trigger an explosion. Therefore, it is vital to maintain a quiet environment to avoid any unnecessary risks or accidents.

You cannot hear a dump truck driving through a nitroglycerin plant because it is incredibly dangerous to do so. The vibration and noise generated by the truck can cause a shock wave that can trigger an explosion. Therefore, the facility's employees must maintain a quiet environment and avoid any loud noises or vibrations that can cause an accident or explosion.

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Answer:

0.2832 moles

Explanation:

mole = mass/ molar mass

mole= 28.35/100.08

mole=0.2832

In a first-order reaction, it takes 23.02 days for 68 percent of the chemical to be destroyed.

Given,

fee constant for the destruction of pollutant = 0.1/day

We ought to discover the number of days it'll take for sixty eight percent of the chemical to be destroyed.

[A] = [A]₀e^⁻kt

in which [A] is the present awareness, and

[A]₀ is the initial awareness

k is the price of decrement

[A]₀ = 1

[A] = 0.1

Or, t =㏑(10)/k

Or, t = 2.302/zero.1

Or, t = 23.02 days.

for this reason the wide variety of days required for the destruction of sixty eight percent of chemicals is 23 days.

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Answer:

it would be the same weight but it's ith sugar I think it would way more

If you want a solution that is less than saturated, the amount of HCl needed is less - in this case, 27.5g.

Saturated refers to a state of being filled to capacity or having reached its maximum level. In chemistry, it is used to describe a molecule or compound that has all its available bonds filled with either single or multiple bonds. It is a state of maximum solubility, meaning that no more of a substance can dissolve in a given solvent. In physical science, it can also refer to the highest temperature where a substance can exist in the liquid state without boiling.

The amount of HCl required to make a solution with 100g of water saturated at 60 degrees C depends on the concentration of the HCl solution you are trying to make. If you want to make a saturated solution, the maximum amount of HCl that can be dissolved in 100g of water at 60 degrees C is 55g. If you want a solution that is less than saturated, the amount of HCl needed is less - in this case, 27.5g.

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To determine how many atoms thick the lead sheet is, we need to calculate the number of atoms that can fit within its thickness.

First, let's convert the thickness of the lead sheet from inches to picometers (pm). Since 1 inch is equal to 25,400,000 pm, a 1/9 inch thick lead sheet would be approximately 2,822,222 pm thick.

Next, we need to find out how many lead atoms can fit within this thickness. Given that a single lead atom has a diameter of 350 pm, we can divide the thickness of the lead sheet by the diameter of a lead atom:
Number of atoms thick = thickness of the lead sheet / diameter of a lead atom

Number of atoms thick = 2,822,222 pm / 350 pm

Calculating this, we find that the lead sheet is approximately 8,064 atoms thick.

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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.

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answer:Collisions between gas particlCollisions between gas particles or collisions with the vessel walls are perfectly elastic.

explanation:As long as an ideal gas is maintained at a constant temperature, the average kinetic energy of the molecules is said to be constant. In fact, what we call the temperature of a body at the macroscopic scale is just a representation of the kinetic energy carried by its atoms or molecules as they vibrate inside the body.

Now, if the kinetic energy of this oxygen gas is constant, it is because the collisions between the particles are assumed to be perfectly elastic. No energy is lost during the collisions. The rationale behind this assumption is that the particles are very tiny.

The answer which corresponds best to the explanation above is b. Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.

Answer:

56.69905

Explanation:

The conversion factor from pounds to kilograms is 0.45359237, which means that 1 pound is equal to 0.45359237 kilograms.

Answer:

chemical elements

Explanation:

sorry if im wrong.

The sample that has the largest number of atoms is 1g of Chlorine(Cl). That is option C.

To calculate the sample with the largest number of atoms, the various number of atoms of each sample should be determined.

That is;

For sample A;

Na = 23 g

But 1g of Na= 6.022×10²³

23g of Na= 6.022×23 = 1.39×10²¹

For sample B;

Li = 7g

But 1 g of Na = 6.022×10²³

7 g of Na = 7× 6.022×10²³

= 4.22×10²⁴

For sample C;

Cl2= 71

But 1 g of Cl = 6.022×10²³

71g of Cl = 71×6.022×10²³

= 4.28 × 10²⁵

For sample D;

Au = 197

But 1g of Au = 6.022×10²³

197g = 197×6.022 × 10²³

= 1.186 × 10²⁶

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Complete question:

Which one of the following will have greatest number of atoms?

A.) 1g Na

B.) 1g Li

C.) 1g Cl2

D.) 1g Au

can't,........................

Answer:

it is A

Explanation:

because breeding a poodle and golden retriever doesn't make a golden noodles

The term used to denote the concentration of electrolytes in a given volume is "molarity".

Molarity-

Molarity is the number of moles of solute dissolved in one liter of the solution. Molarity is the most widely used concentration metric in chemistry, and it is frequently denoted by "M." It denotes the amount of solute in moles per liter of solution.

A solution's molarity can be calculated using the following formula:

Molarity = moles of solute / liters of solution

Molarity is often used to express the concentration of a solution's electrolytes because electrolytes break into ions when dissolved in a solvent, allowing for electrical conductivity.

Molarity can be used in other applications, such as stoichiometry, which involves determining how much of one compound is required to react completely with another.

Molarity is a useful tool for solving problems that involve chemical reactions since the number of moles of a substance is frequently used to establish reaction ratios, limit reactants, and determine the theoretical yield.

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Answer:

The north atlantic contains the warmest and saltiest water of the major oceans, the southern ocean is the coldest, the north pacific has the lowest average salinity. This density signature is locked into the water parcel when it sinks

Explanation:

i think

Answer:

P2=0.385atm

Explanation:

For a mixture of polar compounds, you want a nonpolar solvent, and with a mixture of nonpolar compounds, you want a polar solvent.

Polar compounds have polar covalent bonds and have positive and negative pole. They have a symmetrical electron distribution. These are compounds in which the shared electrons are not distributed equally between the atoms. These types of compounds usually have high melting and boiling points, good solubility, and high polarity.

Nonpolar compounds are those in which the atoms are joined by covalent bonds, and there is no separation of charge across the molecule. The bond electrons are distributed equally between the two atoms. Because they have low polarity, these compounds do not dissolve easily in polar solvents.

Polarity is defined as the separation of charge between atoms in a molecule, or in a group of atoms that act as a single entity. The polarity of a molecule is determined by the difference in electronegativity between the atoms and the shape of the molecule.

Therefore, for a mixture of polar compounds, you want a nonpolar solvent, and with a mixture of nonpolar compounds, you want a polar solvent.

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There is great relationship between the SI unit for volume and length because the base unit is same.

The base units of length and volume are linked to each other in the metric system because the unit of volume is cubic meters while on the other hand, the unit of length is meter. The unit of volume is three times of the unit of length. There is direct relationship between volume and length due to the similar of their base units. So volume and length are related to each other.

So we can conclude that there is great relationship between the SI unit for volume and length because the base unit is same.

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Answer:

Evaporation

Explanation:

Boiling the water will make it evaporate, leaving the solid at the bottom of the solution

Explanation:

For us to answer these questions, we have to know two formulas:

Therefore:

a) particles of Na = 1.50 mol × (6.022 × 10²³) particles/mol

                            = 9.033 × 10²³ particles

b) particles of Pb = 6.755 mol × (6.022 × 10²³) particles/mol

                            = 4.068 × 10²⁴ particles

c) particles of Si

             = (7.02 g ÷ 28.085 g/mol) × (6.022 × 10²³) particles/mol

             = 1.51 × 10²³ particles

Because of their differing nuclear charges, and as a result of shielding by inner electron shells, the different atoms of the periodic table have different affinities for nearby electrons.

The electron affinity is the potential energy change of the atom when an electron is added to a neutral gaseous atom to form a negative ion. So the more negative the electron affinity the more favourable the electron addition process is.

Not all elements form stable negative ions in which case the electron affinity is zero or even positive.

Electron affinity depends on the nuclear charge of an atom.

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Answer:

\(\boxed{CH_{4}+O_2 --> CO_2 + H_2O}\)

Explanation:

Step 1. Methane's formula is \(CH_4\).

Step 2: Oxygen is a diatomic molecule (it exists bonded to itself for stability purposes), so by itself in chemical equations, it is written as \(O_2\).

Step 3: Carbon dioxide is the molecular compound of one atom of carbon and two atoms of oxygen → \(CO_2\).

Step 4: Water is the common name of the compound of two hydrogen atoms and one oxygen atom → \(H_2O\).

Step 1: Use the determined formulas for the reactants and plug them into the equation. We are told that methane burns in oxygen -- hinting at a combustion reaction. Therefore, we may infer that these are the reactants that yield the products.

Skeleton equations are written with the reactant(s) on the left -- if there are several, they are separated by an addition symbol (+).

With this information, we may begin our equation: \(CH_4 + O_2\), where \(CH_4\) is methane and \(O_2\) is the diatomic molecule of oxygen.

Step 2: Use the determined formulas for the products and plug them into the equation. We are told that the methane burns in oxygen to produce carbon dioxide and water. Hence, we can separate these two as we did with the reactants.

Now, our products side of the reaction will look like this: \(--> CO_2 + H_2O\), where \(CO_2\) is carbon dioxide and \(H_2O\) is water.

Step 3: Write the final equation. All you must do after determining both sides of the equation is simply push them together. Place the reactant side of the equation on the left and the product side of the equation on the right.

This gives us our final equation, \(\boxed{CH_4 + O_2 --> CO_2 + H_2O}\).

Because the problem asks for the unbalanced equation, we do not need to take any further steps of balancing the equation.

Answer:

Chemical reactions that absorb (or use) energy overall are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.