The Periodic Table of Elements is organized by the number of:

a) neutrons
b) electrons
c) protons
d) neutrons and protons

Answer:

A. Semi-amplitude is half the distance of the peak-to-peak amplitude

Explanation:

The correct answer is : The semi-amplitude is half the distance of the peak-to-peak amplitude (option A). The peak-to-peak amplitude is the total distance between the highest positive peak and the lowest negative peak in a waveform. It represents the full range of variation in the amplitude of the waveform.

The peak-to-peak amplitude of a waveform is the measurement of the total distance between the highest positive peak and the lowest negative peak. It provides information about the full range of variations in the amplitude of the waveform. Mathematically, it is calculated by subtracting the minimum value from the maximum value of the waveform.

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Answer:

1. B. environment

2. A. true

Explanation:

If a trait varies greatly within a pair of identical twins, it is most likely influenced by the environment. Genetics and the environment both are responsible for human development.

Genetics can be described as the study of genetic variation, genes, and heredity in organisms. It is a branch in biology because heredity is vital to organisms' evolution.

Trait and molecular inheritance mechanisms of genes are still primary principles of genetics and have expanded to study the function and behavior of genes.

Genetics has a number of subfields, including molecular genetics, epigenetics, and population genetics. Living organisms are studied within the broad field span the domains of life such as bacteria, archaea, and eukarya.

Genetic processes work with an organism's environment and experiences to influence behavior and development referred to as nature versus nurture. The extracellular or intracellular environment of a living organism can switch gene transcription on or off.

Therefore, the given statement is true.

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Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer:

The answer to this question is ( a )

Explanation:

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

Option (D) A Generator

Explanation:

A generator is an equipment that has to do with the production of electricity by the use of electromagnetic induction. The generator has split rings that make contact with the exterior.

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The Answer is 0.001156.

Reproduction is not essential for the survival of an individual organism but is essential for the survival of the species.

Answer : Reproduction is not essential for the survival of an individual organism but is essential for the survival of the organism's species.

Answer:

Yes, it is. The chart shows that the initial charge of the neuron is negative. When the neuron is stimulated, sodium ions enter the cell. So, the voltage inside the cell changes to positive. When potassium ions move outward, the voltage decreases until it reaches its previous state.

Explanation:

answer on edmentum

Answer:

The correct answer is : d) K₂Cr₂O₇ + KOH ⇒ 2 K₂CrO₄ + H₂O

Explanation:

An oxidation-reduction reaction (redox reaction) is the one in which the number of oxidation of the atoms change, and electrons are shared.

Oxidation: the atom loses electrons and its oxidation number is increased.

Reduction: the atom gains electrons and its oxidation number is decreased.

In the following reactions, the atoms which loses or gains electrons are:

a) 3Br₂ + 2Ga ⇒ 2GaBr₃

Br: its oxidation number changes from 0 to -1 (reduction)

Ga: its oxidation number changes from 0 to +3 (oxidation)

IT IS A REDOX REACTION.

b) H₂S + Cl₂ ⇒ 2HCl + S

Cl: its oxidation number changes from 0 to -1 (reduction)

S: its oxidation number changes from -2 to 0 (oxidation)

IT IS A REDOX REACTION

c) 2PbS + 3O₂ ⇒ 2PbO + 2SO₂

O: its oxidation number changes from 0 to -2 (reduction)

S: its oxidation number changes from -2 to +4 (oxidation)

IT IS A REDOX REACTION

d) K₂Cr₂O₇ + KOH ⇒ 2 K₂CrO₄ + H₂O

There are not changes in oxidation numbers of the atoms:

K : +1

Cr: +6

H: +1

O: -2

IT IS NOT A REDOX REACTION.

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer:

I believe that the answer is 2

Answer:

2

Explanation:

To find an epicenter of an earthquake, you look directly above the point at the center. The center, as we can see, is at point 3. If we move in a straight line up, we can see that the epicenter is at point 2.

Answer:

Explanation:

anyways: Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.

Answer:

b

Explanation:

i got it right on USA Test prep

Convection is a process in which the heat from one part of a fluid ( which can either be a liquid or a gas ) moves to its other parts .

Answer:

lol sunday was yesterday eheheheheh

Explanation:

Answer:

All of the above

Explanation:

I believe all three are true. They see how the organism is similar to other organisms. They see if the organism has the characteristics of an animal or plant. They look at what makes the organism unique.

The gas laws have been applied to find the missing values;

1) 1.72 atm

2) 880 K

3) 1.13 atm

4) 5.9 L

5)  167.4 kPa

The Charles, Boyle's and Gay - Lussac's laws are applied here.

We know that;

From Gay Lussa law

\(P_{1}\)/\(T_{1}\) = \(P_{2}\)/\(T_{2}\)

\(P_{2}\) = 1.21 * 450/315

\(P_{2}\) = 1.72 atm

From Charles's law

\(V_{1}\)/\(T_{1}\) = \(V_{2}\)/\(T_{2}\)

\(T_{2}\)    = 4.8 * 495/2.7

\(T_{2}\)= 880 k

From Boyle's law

\(P_{1}\)\(V_{1}\)= \(P_{2}\)\(V_{2}\)

\(P_{2}\) = 7.14 * 1.9/12.0

\(P_{2}\) = 1.13 atm

From the general gas law;

\(V_{2}\) = 2.1 * 6.9 * 291/1.8 * 400

\(V_{2}\) = 4216.59/720

\(V_{2}\) = 5.9 L

From Gay Lussa law

\(P_{1}\)/\(T_{1}\) = \(P_{2}\)/\(T_{2}\)

\(P_{2}\)  = 315.2 * 145/273

= 167.4 kPa

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Answer:

The correct answer is "True" hope this helps - Answer Expert Verified

Explanation:

Answer: Food

Explanation:

The rat smells the food or sees the food it goes towards the food to eat it.

Answer:

"Yes," a moving skateboard has energy.

When the skater seems to be in motion or throughout a movement, the potential energy converts itself into the kinetic form of energy, and then it becomes potential energy again.

Furthermore, somewhere after every movement, the same skateboarder was around a similar height, — in other words thus every time it is equally powerful.

The response is thus the right one.

Explanation:

Answer:

Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.

(It's on quizlet btw)

Answer:

Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.

Explanation:

Answer:

V. Combustion

Explanation:

Combustion is a reaction where a substance is burned - in this case, hydrogen is burned.

Answer:

I think it's A

Explanation:

They probably have fossils inside and other designs about dead or extinct creatures

Answer:

abc

Explanation:

got it right

Taking into account the reaction stoichiometry, the theoretical yield of oxygen when 29.2 g of water are decomposed by electrolysis is 25.956 grams.

In first place, the balanced reaction is:

2 H₂O → 2 H₂ + O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.

The following rule of three can be applied: if by reaction stoichiometry 36 grams of water form 32 grams of oxygen, 29.2 grams of water form how much mass of oxygen?

\(mass of oxygen=\frac{29.2 grams of waterx32 grams of oxygen}{36 grams of water}\)

mass of oxygen= 25.956 grams

Finally, the theoretical yield of oxygen when 29.2 g of water are decomposed by electrolysis is 25.956 grams.

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Answer:

There could be several possible reasons for a small gap between rails on a railway track, such as:

1. Expansion joints: Railways are designed to allow the tracks to expand and contract with changes in temperature. To accommodate this expansion, small gaps are left between the rail ends and filled with expansion joints or plates.

2. Wear and tear: Over time, the rails may experience wear and tear due to heavy loads, weather conditions, and other factors. As a result, small gaps can appear between the rails.

3. Maintenance: During maintenance activities, rail tracks may be adjusted or replaced, which could lead to small gaps between the rails.

4. Environmental factors: Environmental factors such as soil shifts, earthquakes or other natural disasters can also affect the alignment of the rails, leading to small gaps.

These are some of the possible reasons for a small gap between the rails on a railway track.

Answer:

The small gap left between the rails in a railway track is intentional and serves a specific purpose. This gap is known as the rail joint, and it allows for the expansion and contraction of the rails due to changes in temperature. When the temperature changes, the metal rails will expand or contract, and if they were joined together tightly, they could buckle or become deformed, which could be dangerous for trains passing over them. The rail joint allows the rails to move slightly and prevent damage to the track.

Additionally, the rail joint also allows for maintenance and repairs of the track. If there were no gap between the rails, it would be challenging to replace a damaged rail or perform routine maintenance, such as tightening bolts or lubricating joints. With the rail joint, maintenance personnel can easily access and work on the track.

Overall, the small gap left between the rails in a railway track is intentional and serves a crucial function in ensuring the safety and reliability of the track.