Which of the following can be a
wave medium?
A. solids, liquids, gases, and plasma
B. only solids
C. empty space

Answer:

Chapter 2.

Explanation:

Since the chapter is going to be talking about how animals have to get food and why it is difficult, you will find that "consumers" are included in this topic.

Consumers are organisms that eat other organisms to get energy. Therefore, in Chapter 2, you will be learning about organisms and how they get food, and consumers will be in that as well.

I hope this helps!

-No one

There will be 3 H NMR signals for 2-chloro-3-methyl-2-butene.

The variety of protons present in a molecule is represented by the number of NMR signals. The illustration we used to explain NMR spectroscopy is as follows: Five signals on the spectrum signify five different types of protons. can be calculated simply by counting the number of unique hydrogens on one side of the symmetry plane. Nuclear magnetic resonance is used in proton nuclear magnetic resonance (1H NMR, proton NMR, or hydrogen-1 NMR), which uses hydrogen-1 nuclei within a substance's molecules to determine the structure of those molecules. Using NMR technique one can analyze the molecular structure of a molecule by observing the nuclear spins in electric field.

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Answer:

I catalyst promoter is the answer

To solve this we must be knowing each and every concept related to synthetic chemical. Therefore, synthetic chemicals have origins in nature.

These aren't substances found in nature; rather, they are man-made compounds created by a human process. The many vitamins present in fruits and vegetables are manufactured in a lab. Modern chemistry has produced certain toxic compounds that are dangerous to society as a whole, such dioxins and DDT.

The debate over natural vs. synthetic chemicals has been going on for years. Those who favor naturally occurring compounds think they are far safer than manufactured ones since nature always knows the best cure. Synthetic chemicals have origins in nature. Synthetic chemicals are not completely man-made.

Therefore, synthetic chemicals have origins in nature.

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Answer:(1)The urinary system's function is to filter blood and create urine as a waste by-product.

(2) two kidneys we have.

(3)The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances.

(4)Two ureters. These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys.

(5)A hollow, muscular, balloon-shaped organ that expands as it fills with urine.

(6)The urethra is the vessel responsible for transporting urine from the bladder to an external opening in the perineum.

(7)Urine is formed in the kidneys through a filtration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, the urine is passed from the bladder through the urethra to the outside of the body.

Explanation:

Watercolor is a popular painting medium that consists of pigments that are suspended in a solution of water and gum Arabic. The gum Arabic acts as a binder to hold the pigments together, allowing them to be easily applied to paper or other surfaces.

Watercolor paintings are known for their transparency, which is achieved by diluting the pigment with water. However, if the pigment concentration is too high or the water is not mixed properly, the result may be a less transparent painting. This is because the pigments are not fully suspended in the water and gum Arabic solution, causing them to settle and create a more opaque effect. So, it is important to ensure that the pigment and water are properly mixed to achieve the desired level of transparency in a watercolor painting.

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NH4+ is the conjugate acid of NH3., The formula for the conjugate acid of F− is HF , Cl − Chloride ion  for the conjugate acid of  HCl.

NH4+ is the conjugate acid of NH3.

The formula for the conjugate acid of F− is HF

Cl − Chloride ion  for the conjugate acid of  HCl Hydrogen chloride

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Answer:

A conjugate acid is the product that is different from a base by one proton.

Explanation:

What is a conjugate acid Example?

A conjugate acid is the product that is different from a base by one proton. Examples of conjugate acids include water (base) reacting with an acid to form the hydronium ion (conjugate acid), and ammonia (base) reacting with an acid to form the ammonium ion (conjugate acid).

The conjugate of HF:

So as we know, a conjugate base is simply an acid that has given up a proton. In the case of HF (hydrofluoric acid), once it donates the H+ ion/proton, it becomes F- (fluoride ion). The remaining F- is the conjugate base of HF and conversely, HF is the conjugate acid of F-.

The conjugate of HCL:

If a species is classified as a strong acid, its conjugate base will be weak.[3] An example of this case would be the dissociation of hydrochloric acid HCl in water. Since HCl is a strong acid (it dissociates to a great extent), its conjugate base (Cl−) will be a weak conjugate base. Therefore, in this system, most H+ will be in the form of a hydronium ion H3O+

instead of attached to a Cl− anion and the conjugate base will be weaker than a water molecule.

Conjugate base of HCl in the following reaction is: HCl(aq)+H2O→Cl−(aq)+H3O+.

The conjugate of NH:

Normally the conjugate acid of a weak base is a strong acid, however, the conjugate acid of the weak base NH3 is a weak acid, NH4+.A conjugate acid-base pair is an acid-base pair that differs only by one proton.Conjugate acid When a proton is added to a base, a conjugate acid is formed.Conjugate acids have one extra proton compared to the species that is forming it.Conjugate acid of NH3.The given species is ammoniaNH3.The conjugate acid of NH3 is NH4+.

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Answer:

Physical changes occur when the properties of a substance are retained and/or the materials can be recovered after the change. Chemical changes involve the formation of a new substance. Formation of a gas, solid, light, or heat are possible evidence of chemical change.

brainliest???

Answer:

Physical changes occur when the properties of a substance are retained and/or the materials can be recovered after the change.

Explanation:

Answer:

C5P4

Explanation:

the answer is C5P4 because penta is 5 and tetra is 4

Answer:

2H2O2→2H2O+O2

Explanation:

This reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

Add 2 molecules of hydrogen peroxide and 2 molecules of water. Since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

2H2O2→2H2O+O2

Answer:

170.362 L

General Formulas and Concepts:

Atomic Structure

Gas Laws

Stoichiometry

Explanation:

Step 1: Define

Identify variables

[Given] 106.476 g N

[Solve] L N

Step 2: Identify Conversions

[STP] 1 mol = 22.4 L

[PT] Molar Mass of N: 14.01 g/mol

Step 3: Convert

Answer:

iron

Explanation:

iron reacts with oxygen easily causing rust to form. the haemoglobin in your red blood cells contains haem which is iron and that's how your body transfers oxygen all over

Answer:

a

Explanation:

A chemical equation is said to balanced only when the number of atoms of each element is the same in both reactants and products side. Rest all options are absurd. Hence, option a is correct.

Balancing of the reaction has no relation with coefficient, molecules or charge of the elements

Dynamic equilibrium is a state in which the concentrations of the reactants and products in a reaction remain constant. This is because the forward and backward reactions are occurring at the same rate.

In an experiment to study the formation of HI (g), H2 (g)+ I2(g) rightarrow 2HI (g), H2 (g) and I2(g) were placed in a sealed container and allowed to react.

On one set of axes, the concentration vs time curve for H2 and HI will look like a decaying exponential curve. As the reaction proceeds, the concentration of the reactants will decrease and the concentration of the product, HI, will increase.

This will happen until the concentrations of the reactants and products reach a dynamic equilibrium.

Dynamic equilibrium is a state in which the concentrations of the reactants and products in a reaction remain constant. This is because the forward and backward reactions are occurring at the same rate.

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Answer:

4.46

Explanation:

1.24 ml= 0.00124 L

3600 s=1 hr

0.00124 x 3600=4.46

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore,  the rate of the water leak in L/hr is 4.46L/hr.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.

1.24 ml= 0.00124 L

3600 s=1 hr

0.00124 x 3600=4.46L/hr

Therefore,  the rate of the water leak in L/hr is 4.46L/hr.

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A 1200 mL IV drip is labelled to contain 12% of a laxative. The number of mL of the IV drip that should be administered if a patient is to receive 21 mL of the laxative is 175 mL.

To find the number of mL of the IV drip that should be administered to provide 21 mL of the laxative, we can set up a proportion using the concentration of the laxative.

Let x represent the number of mL of the IV drip to be administered.

The concentration of the laxative is given as 12% or 0.12, meaning that in 100 mL of the IV drip, there are 12 mL of the laxative.

Using the proportion:

(12 mL of laxative) / (100 mL of IV drip) = (21 mL of laxative) / (x mL of IV drip)

Cross-multiplying, we get:

12 mL * x mL of IV drip = 100 mL * 21 mL of laxative

12x = 210 IV drip0

Dividing both sides by 12:

x = 2100 / 12

x = 175

Therefore, 175 mL of the IV drip should be administered to provide 21 mL of the laxative.

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Answer:

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions

Explanation:hope this helps<33

The basicity of neutral molecules is related to the electron-donating capacity of the molecule's chemical species. This capacity is primarily determined by the electron-donating effect of substituent groups attached to the nitrogen atom. The amino group (-NH2) is an example of such a group in a molecule.

The following are the neutral molecules that are ranked in order of increasing basicity (least basic molecule at the beginning):

1. CH3NH2, a weak base

2. (CH3)2NH, a slightly stronger base

3. (CH3)3N, a moderately strong base

This ranking of neutral molecules according to their basicity is determined by the number of electron-donating groups present in each molecule.

The more electron-donating groups present, the greater the basicity of the molecule.

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Answer:

im not sure

Explanation:

The pH of the solution is approximately 9.41.

The pH of a solution can be determined using the Henderson-Hasselbalch equation, which relates the pH to the concentrations of the acidic and basic components of the solution. In this case, hydrocyanic acid (HCN) acts as the acidic component, while potassium cyanide (KCN) acts as the basic component. The dissociation of HCN in water produces cyanide ions (CN-) and hydrogen ions (H+).

The concentration of hydrogen ions can be calculated using the concentration of HCN and the dissociation constant (pKa) of hydrocyanic acid. By plugging these values into the Henderson-Hasselbalch equation, the pH of the solution can be determined. In this case, the pH is approximately 9.41, indicating that the solution is slightly basic.

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Answer:

okay

Explanation:

I can help u u can ask question .....

1) The energy of the reactants is 150 kJ/mol

2) The energy of the molecules is decreasing

3) The energy of the products is 50 kJ/mol

Heat is released during an exothermic reaction, raising the temperature of the immediate environment. The environment is cooled through an endothermic process that absorbs heat.

Any chemical process that takes heat from its surroundings is said to be endothermic. The reaction's activation energy comes from the energy that was absorbed. This kind of reaction is characterized by its icy sensation.

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Answer:

The percentage yield is 79.12%

Explanation:

The first thing we need to calculate here is the theoretical yield of ethyl ethanoate that can be obtained from 20g of ethanol.

Since the mole ratio is 1:1, then this is quite straightforward.

What we need to obtain at first here is the number of theoretical moles of ethanol reacting.

That would be mass of ethanol/molar mass of ethanol

Molar mass of ethanol is 46g/mol

Thus the number of moles is 20/46 = 0.4348 mole

Like it is indicated earlier, since the number of moles are equal from the balanced equation, it also means that 0.4348 mole of ethylethanoate is produced

Now, we need to know the mass of ethyl ethanoate produced

The mass can be calculated by multiplying the number of moles by the molar mass

The molar mass of ethyl ethanoate is 88g/mol

So the mass of it produced = 0.4348 * 88 = 38.2624 or let’s just say 38.26

Thus, the percentage yield will be;

Actual yield/Theoretical yield * 100%

From the question, our actual yield is 30.27g while our calculated theoretical yield is 38.26g

= 30.27/38.26 * 100% = 79.12%

The root-mean-square speed-vrms = 615 m/s

Given

O₂ molecules

T = 212 + 273 = 485 K

Required

The root-mean-square speed

Solution

Average velocities of gases can be expressed as root-mean-square averages. (V rms)  

\(\large {\boxed {\bold {v_ {rms} = \sqrt {\dfrac {3RT} {Mm}}}}\)

R = gas constant, T = temperature, Mm = molar mass of the gas particles  

R = 8,314 J / mol K  

T = temperature  

Mm = molar mass, kg / mol  = 0.032 kg/mol

Input the value :

v rms = √(3x8.314 J/mol K x 485 K)/0.032

vrms = 615 m/s

Answer:

C. it's change in form....

Hope this helps...... Stay safe and have a Merry Christmas!!!!! :D

The answer is-  142.27 food calories are in the taco.

Heat capacity-The amount of energy needed to increase the temperature of a substance by one degree Celsius.

How heat released or gained is related to heat capacity?

\(q = m* C*\)Δ\(T\)

Where m is the mass of substance.

C is the heat capacity

and Δ\(T\) is the change in temperature.

\(Heat\ = (22.8 ^{0}\ C) * (31.2 kJ/ ^{0}\ C) = 711.36\ kJ\)

1 kJ = 0.2 food calories

Thus, the food calories in the taco are-

\(Food\ Calories\ in\ taco = (711.36\ kJ) * (0.2 Food\ calories/ kJ) = 142.27\ calories\)

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The frequency of light will create photoelectrons is 1.54 x 10¹⁵ Hz.

The energy of the photon emitted by the light is calculated from the summation of kinetic energy of the photon and work function of the metal.

E = K.E + Ф

where;

E = 1.88 eV + 4.5 eV

E = 6.38 eV

1 eV = 1.6 x 10⁻¹⁹ J

E = 6.38 x 1.6 x 10⁻¹⁹ J

E = 1.021 x 10⁻¹⁸ J

The frequency of the light is calculated as follows;

E = hf

f = E/h

where;

f = (1.021 x 10⁻¹⁸ J) / (6.626 x 10⁻³⁴)

f = 1.54 x 10¹⁵ Hz

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Answer:

See explanation

Explanation:

A pure liquid has a sharp boiling point. Now we know that the boiling point of water is 100°C.

If Laura begins to heat each liquid with a thermometer inserted into each liquid, the liquid that boils at exactly 100°C is pure water while the rest are solutions.

The element is Neon
The protons is the same as the atomic number (10 protons)
The electrons are the same as the number of protons in a neutral atom (10 electrons)
The neutrons can be found by subtracting the protons from the atomic mass (22-10=12 neutrons)

Answer:

New growth of trees is an exception

Explanation:

when volcanoes erupt, they release hot magma that is destructive to the environment causing personal damage, lack of breathable air and death.

heat produce cannot in any way help in growth of trees