Do bases lose or gain hydrogen ions?


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Answer:

The answer is a) [tex]C_{4} H_{16} O_{5}[/tex]

Explanation:

The other chemical formulas' subscripts share a common factor, so they can be simplified to an empirical formula, however, the subscripts in  [tex]C_{4} H_{16} O_{5}[/tex] cannot be simplified any further, because they do not share any more whole-number factors with each other.

Answer:

The thicker the metal, the harder it is for the magnet to attract more paper clips.

Explanation:

There exists a relationship between the paper and the paper clip. The more is the thickness of the paper the stronger the paper clip will be. As size has the ability to attract and affect.

Learn more about the relationship between the thickness of the book.

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Answer:

Nitrogen atom is small in size than phosphorus thus the bond between its nucleus and valence electrons are stronger than phosphorus.

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Answer: I HAVE ATTACHED PROOF SO DONT REMOVE MY ANSWER, MODS.

1. NO

2. NO

Answer: 1. NO 2. NO

Explanation: Just did it and got it correct.

Answer:

It gains electrons.

Explanation:

Got it right on a quiz.

When electrons are added to or taken away from an object, an electrical charge is produced. An object acquires a negative charge when electrons are introduced to it because electrons have a negative charge. An object acquires a positive charge when its electrons are removed.

When a thing picks up electrons, it becomes negatively charged. Non-metals gain electrons at the atomic level to fill their outer electron orbitals. An atom that is negatively charged and has more electrons than protons is said to be an anion.

Some atoms have the ability to draw in more electrons, making them negatively charged. Ions are defined as atoms that are not electrically neutral.

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Answer:

Chemicals A and B form an endothermic reaction, and chemicals C and D form an exothermic reaction.

Explanation:

The reaction that produced chemical C is an endothermic reaction whereas, the reaction between C and D is an exothermic one.

An exothermic change is one in which heat is liberated to the surroundings. So the surrounding becomes hotter at the end of the reaction.

An endothermic reaction is a change in which heat is absorbed from the surrounding and hence the surrounding colder at the end of the change.

Answer:

Explanation:

Chemicals A and B form an exothermic reaction, and chemicals C and D form an endothermic reaction.

Chemicals A and C form an endothermic reaction, and chemicals B and D form an exothermic reaction.

Chemicals A and B form an exothermic reaction, and chemicals B and D form an endothermic reaction.

Explanation:

Percentage composition of oxygen = (80/134) * 100% = 59.7%.

Answer:

false

Explanation:

Because in a periodic table they are not located below each other and therefore do not have the same number of electrons.

Answer:

54.5%

Explanation:

The percentage composition of oxygen in C₆H₈O₆ can be obtained as follow:

Molar mass of C₆H₈O₆ = (12×6) + (8×1) + (16×6)

= 72 + 8 + 96

= 176 g/mol

Next, there are 6 oxygen atoms in C₆H₈O₆. Therefore the mass of oxygen in C₆H₈O₆ is:

Mass of Oxygen = 16 × 6 = 96 g

Finally, we shall determine the percentage composition of oxygen in C₆H₈O₆ as follow:

Percentage of oxygen =

Mass of Oxygen/mass of C₆H₈O₆ × 100

Percentage of oxygen = 96 / 176 × 100

Percentage of oxygen = 54.5%

Thus, the percentage composition of oxygen in C₆H₈O₆ is 54.5%.

Answer:

Carbon dioxide (CO2)

Ethene (C2H4)

Methane (CH4)

Explanation:

Answer:

2. Makes accurate predictions based on only a small amount of empirical evidence

Explanation:

For a phrase or scientific finding to be considered a law, there has to be clear evidence and facts to support that specific finding. In the case of the evolution theory, the evidence is not clear enough to make it a law

Answer:

2. Makes accurate predictions based on only a small amount of empirical evidence

Explanation:

Answer:

A- a rigid solid

Explanation:

The Earths mantle is mainly made up of rock and rocks are rigid and are solid.

Answer:

2.47 L. CO2

Explanation:

First, let's establish what we need to find. The volume of CO2 formed at a pressure of 2.50 atm and a temperature of 125 C. Now, don't let this overwhelm you. To find the volume of CO2 formed, we must first find the amount of CO2 formed.

But to find the amount of CO2 formed, we have to write out the equation for this reaction. The type of reaction depicted here is combustion, where oxygen gas reacts with a substance to form carbon dioxide and water. And we also know that this equation must be balanced, according to the Law of Conservation of Matter. It is as follows:

CH4 + 2 O2 => CO2 + 2 H2O.

Now that we have the equation of the reaction, we can now find which of the two reactants is the limiting reactant. To do this, we need to convert the volumes of methane and oxygen gas to moles. Simply use the Ideal Gas Law to do this, and you get:

Methane Gas: .189 mol     |     Oxygen Gas: 1.75 mol

Using the equation, we can then see that methane gas is the limiting reactant.

We know, also due to the equation that 1 mol of CO2 is produced for every mol of methane gas. This gives us the answer of .189 mol of CO2 produced. But remember, the question asks us for the volume of CO2 produced, so we must apply the Ideal Gas Law once again, getting the answer of 2.47 L. CO2.

Note: Please remember to use significant figures during your calculations, and if you have any questions, feel free to post them down below.

Answer:

false it is a chemical change

Answer:

See the answer below

Explanation:

1. Organisms produce energy for cells by chemically breaking down and unlocking the energy locked-up within food materials in a process known as cellular respiration. The unlocked energy is then utilized for the cell's metabolic activities.

2. Cellular respiration can be aerobic or anaerobic.

Aerobic respiration involves the breakdown of carbohydrates in the presence of oxygen to yield energy in the form of ATP while carbon dioxide and water are produced as by-products.

        [tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP[/tex]

Anaerobic respiration involves the breakdown of carbohydrates in the absence of oxygen to produce ATP and lactic acid as a by-product. The lactic acid is later oxidized to carbon dioxide and water to prevent it from building up.

       [tex]C_6H_1_2O_6 -> 2C_3H_6O_3 + ATP[/tex]

3. Photosynthesis and cellular respiration are both considered metabolic processes that take place in living organisms. However, photosynthesis is peculiar only to green plants and some algae while respiration is common to all living organisms. While photosynthesis is anabolic, that is, it involves the building up of materials; respiration is said to be catabolic because it involves the breaking down of materials.

During photosynthesis, inorganic products are utilized to produce carbohydrates for plants with oxygen gas released as a by-product according to the following equation:

       [tex]6CO_2 + 6H_2O --> C_6H_1_2O_6 + 6O_2[/tex]

During respiration, the food taken by living organisms is broken down to unlock the energy in it for metabolic activities according to the following equation:

     [tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP[/tex]

Answer:

true

Explanation:

Names for such acids consist of the prefix “hydro-“, the first syllable of the anion, and the suffix “-ic”. Complex acid compounds have oxygen in them. For an acid with a polyatomic ion, the suffix “-ate” from the ion is replaced with “-ic.”

Answer:

3.46

⋅

10

−

19

J

The energy of a photon is proportional to its frequency, as stated by the Planck - Einstein's equation

E

=

h

⋅

ν

, where

E

- the energy of the photon

h

- Planck's constant, equal to

6.626

⋅

10

−

34

J s

ν

- the frequency of the photon

Now, notice that you are given the wavelength of the photon,

λ

. As you know, frequency and wavelength have an inverse relationship described by the equation

λ

⋅

ν

=

c

, where

c

- the speed of light in vacuum, approximately equal to

3

⋅

10

8

m s

−

1

This means that the relationship between energy and wavelength looks like this

λ

⋅

ν

=

c

⇒

ν

=

c

λ

E

=

h

⋅

c

λ

Another important thing to notice here is that the wavelength of the photon is given in nanometers,

nm

. You need to convert this to meters, the unit used for the value of the speed of light.

E

=

6.626

⋅

10

−

34

J

s

⋅

3

⋅

10

8

m

s

−

575

⋅

10

−

9

m

=

3.46

⋅

10

−

19

J

Explanation:

Brainliest please?

Answer:

moles or atoms?

Explanation:

you can't have a molecule of any so there's two different answers that I can give you:

how many moles? 1.5

how many atoms? 9.03x10^23 atoms

At STP 1 mole of an ideal gas occupies 22.4L.

33.6 L x 1 mol/22.4 L = 1.5 moles of Neon

1.5 moles Ne x 6.02x1023 atoms/mole = 9.03x1023 atoms

9.03x10²³ molecules are in 33.6 liters of neon (Ne) gas at STP. At STP 1 mole of an ideal gas occupies 22.4L.

The smallest unit of matter that may be split without producing electrically charged particles is the atom. It is also the smallest piece of substance with chemical element-like characteristics. Electric forces, which link electrons towards the nucleus of atoms, cause them to be drawn to any positive charge.

Space makes up the majority of an atom. The remainder is made up of a cloud of negatively charged electrons around a positively charged nucleus made up of protons and neutrons. Compared to electrons, that are the smallest charged particles in nature, the nucleus is tiny and dense.  

At STP 1 mole of an ideal gas occupies 22.4L.

33.6 L x 1 mol/22.4 L = 1.5 moles of Neon

1.5 moles Ne x 6.02x10²³ atoms/mole = 9.03x10²³ atoms

Therefore, 9.03x10²³ molecules are in 33.6 liters of neon (Ne) gas at STP.

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Answer:

Chemical symbol

This is used to identify an element without having to write the full name and as such is a designation for the element. It is used in chemical reactions and is usually either one or two letters. Some symbols are, Iron - Fe, Hydrogen - H and Oxygen - O.

Valency

This refers to the capacity of an element to combine with another to form a compound. It is measured by the number of electrons that an atom of an element gains, looses or shares when a chemical reaction involving it takes place.

Answer:

Magnetic: Iron and nickel

Nonmagnetic: Rubber, feathers and/or leather

Explanation:

Hope this helps!

Answer:

This is Newtons 2nd Law: Force is directly proportional to the acceleration of the object, acceleration is inversely proportional to the mass of the object.

Answer:

A. The kinetic energy increases as its speed increases.

Explanation:

The kinetic energy of an object is energy possessed by an object by virtue of its motion.

Now, kinetic energy of a moving body is given by;

KE = 1/2 mv^2

Where;

m = mass of the body

v = velocity (speed) of the body

It follows that if the mass of the spaceship is constant, a sudden increase in speed leads to a corresponding increase in the kinetic energy of the spaceship in accordance with the relationship show above.

Answer:

You'll speed up! A. Because the kinetic energy increases as its speed increases.

Explanation:

Answer:

Explanation: Analog signal is continuous in nature as it is well defined for every specific time. More specifically, it is the one defined continuously for a range of values with time. These are represented as a sinusoidal waveform. The figure below represents an analog signal:

analog signal

As we can see here that the signal is continuous in nature as its every value is specified for each particular interval of time, thus, is referred as the continuous-time signal. For the purpose of recording the analog signals, the actual signal must be preserved as only in that case we can record the accurate analog signal.

However, whenever in any application there arises a need to change an analog signal into a digital one then through sampling this can be achieved. In the sampling technique, this signal is sampled at certain fixed time intervals and the sampled voltage is converted into digital values.

Definition of Digital Signal

A type of signal which is non-continuous in nature as it is defined only for a set of discrete times is known as a digital signal. More simply, we can say, it is specified at some particular time instants only. Thus, here the information is represented as a set of discrete values. The figure given below shows the signal representation in digital form:

digital signal

Here it is clear that the data is discretely positioned in time axis thus is shown in the form of bits i.e., 0 and 1. This means that here the signal performs the sudden transition between 0 and 1 where these two values correspond to the two voltage levels. For the purpose of recording the signals, in the digital one, only the samples of the actual signal are taken and not the whole signal.

Key Differences Between Analog and Digital Signal

Analog and digital signals are differentiated mainly on the basis of their way to carry the information. Analog signals represent the information as a continuous function of time. As against, digital signals are represented discretely at specific time intervals.

Analog signals deteriorate more easily than digital one as their susceptibility towards noise is higher.

The devices that operate on an analog signal need more power for transmission and reception than the devices that work on the digital signal.

The information represented by the analog signal is comparatively more accurate than the digital signal due to its continuous range of values.

Analog signals are transmitted at a slower rate than digital signals as the information holds more values thus is precise.

An analog signal is defined by the amplitude, phase, frequency, etc. While the digital signal is mainly associated with bit rate, bit intervals, etc.

The sinusoidal representation of the analog signal makes it difficult to understand or get decoded thus encryption is not required in analog signals. But as the digital signals are in the form of square waves, thus, it can be decoded easily hence need to be encrypted for secured communication.

On the basis of processing, it is said that the continuous nature of the signal offers easy processing of the analog signal. However, the discrete nature of the signal offers difficultly in the processing of the digital signal.

Conclusion

Thus, the above discussion concludes that due to the way of representing the signal, the two are differentiated. And because of this, the two types of signals possess different properties and are used in different applications. Like analog signals are used in radio wave transmission and reception whereas digital signals are used in the field of digital electronics.

Explanation:

It is given that,

A football player has to run 60 meters in 5 seconds or less in order to make the all-star team.

We need to find the slowest speed he run in order to qualify for the all-star team. Let it is v. It can be calculated as follows :

v = d/t

= 60 m/5 s

= 12 m/s

It means his slowest speed is 12 m/s and he should increase his speed in order to qualify for the all-star team.

B is the answer..............

Answer:

D. Carbon Dioxide

Explanation:

Carbon is what enters the plant. It isn't a product of the plant.

Answer:

False

Explanation:

The relationship between energy and amplitude can be written as eαa^2

This means that the energy of a wave is directly proportional to the square of the amplitude.