What is true about these atoms and molecules?
O All of these are molecules
O B and Care atoms; A, D and E are molecules
O A, D and E are atoms; B and C are molecules
O A and D are atoms; B, C and are molecules.

I think it is newtons but not that sure

Answer:

Gravity

Explanation:

I remembered from quizlet.

The order is of increasing acidity is,

FCH2CO2H (weakest acid) < CICH2CH2CO2H < CICH2COZH (strongest acid).

The order of increasing acidity is based on the ability of the compound to release a hydrogen atom when dissolved in water, also known as the compound's dissociation constant.

Since FCH2CO2H has the weakest bond between its hydrogen atom and the rest of the molecule, it will be the weakest acid.

CICH2CH2CO2H and CICH2COZH both contain two hydrogen atoms, and the strength of their bonds will determine the relative order of increasing acidity.

CICH2CH2CO2H contains stronger bonds between its hydrogen atoms and the rest of the molecule, making it the intermediate acid, while CICH2COZH has the strongest bonds, making it the strongest acid.

Therefore, the answer is,  FCH2CO2H (weakest acid) < CICH2CH2CO2H < CICH2COZH (strongest acid).

To know more about acidity refer here:

https://brainly.com/question/13238260#

#SPJ11

To calculate the number of moles of NaOH in a 10.0 g sample of this substance, we need to use the molar mass of NaOH.

The molar mass of NaOH is:

Na: 22.99 g/mol

O: 16.00 g/mol

H: 1.01 g/mol

Adding up the atomic masses:

Na + O + H = 22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 40.00 g/mol

Now we can calculate the number of moles using the formula:

moles = mass / molar mass

moles = 10.0 g / 40.00 g/mol = 0.25 moles

Therefore, the number of moles of NaOH in a 10.0 g sample is 0.25 moles.

The correct answer is (e) 0.250 moles.

Learn more about Molar mass here -: brainly.com/question/19461013

#SPJ11

Downy Woodpecker

Reading and Annotating the Question

One way to narrow the choices is to read the question first. While reading the question, annotate for important phrases. I would underline "dead branches and dying trees" and "habit would be most affected."

Reading and Annotating the Chart

Now that we have read the question, it is time to read the chart. While you read, check for words or phrases that relate to the phrases we underlined in the question. When I read the chart I noticed the phrase "decaying trees" under the Downy Woodpecker. Since the Downy Woodpecker depends on decaying trees, they would be heavily affected by the removal of dying trees.

Process of Elimination

To check our answer we can use the process of elimination.

A) We can eliminate the Baltimore Oriole because it relies on "tall trees," not dying trees.

B) The Barn Swallow is also incorrect because they nest "under roofs," which is not affected by the removal of any trees.

D) Finally, the Belted Kingfisher is wrong because they build nests in "tunnels or burrows," which is also unrelated to the removal of trees.

Answer:

0.54 J/goC

Explanation:

Recall that we define the heat transferred as ;

H= mcθ

Where;

H= heat transferred = 112300J

m= mass of the metal= 240g or 0.24 Kg

c= specific heat capacity of the metal = the unknown

θ= change in temperature = (880°C-13°C) = 867°C

Substituting values and making the specific heat capacity the subject of the formula;

c= H/mθ

c= 112300/ 240×867

c= 0.54 J/goC

Hence, the specific heat capacity of the metal is 0.54 J/goC.

The ionization constant of the acid is 0.00072

The ionization constant (Ka) of the monoprotic acid can be calculated using the equation:

Ka = ([H+][A-])/[HA]

where [H+] is the concentration of hydrogen ions, [A-] is the concentration of the conjugate base, and [HA] is the initial concentration of the acid.

We know that the acid is 12 percent ionized, which means that only 12 percent of the initial concentration of the acid has ionized into hydrogen ions and the conjugate base.

Therefore, the concentration of hydrogen ions and the conjugate base can be calculated using the following equations:

[H+] = 0.12 x 0.038 M = 0.00456 M
[A-] = 0.12 x 0.038 M = 0.00456 M

The initial concentration of the acid ([HA]) can be calculated by subtracting the concentration of hydrogen ions and the conjugate base from the initial concentration of the solution:

[HA] = 0.038 M - 0.00456 M - 0.00456 M = 0.02888 M

Substituting these values into the equation for Ka, we get:

Ka = (0.00456 M)2 / 0.02888 M = 0.00072

Therefore, the ionization constant (Ka) of the monoprotic acid is 0.00072.

To know more about ionization click on below link :

https://brainly.com/question/28385102

#SPJ11

The larger the oligonucleotides , the less distance it will travel. Therefore, in the order of decreasing distance traveled:

AAACT → AGGGAAG → CTACGTGCG → TTTGCGTATTT → GTATGTTCACCCGTC

Oligonucleotides:

Oligonucleotides are short DNA or RNA molecules, oligomers, widely used in genetic testing, research, and forensics. Typically produced in the laboratory by solid-phase chemical synthesis, these small fragments of nucleic acids can be made into single-stranded molecules by user-specified sequences, making them essential for artificial gene synthesis, polymerase chain reaction (PCR), DNA sequencing, molecular cloning and molecular probes.

Oligonucleotides are chemically synthesized using building blocks, protected phosphonamidites, natural or chemically modified nucleosides or, to a lesser extent, non-nucleoside compounds. Assembly of the oligonucleotide chain occurs in the 3' to 5' direction according to a general procedure called the "synthetic cycle". The maximum length of synthetic oligonucleotides barely exceeds 200 nucleotide residues. Products can be isolated in any order using HPLC and other methods.

Complete Question:

Rank these oligonucleotides according to distance traveled in an electrophoretic separation

TTTGCGTATTT

AGGGAAG

GTATGTTCACCCGTC

CTACGTGCG

AAACT

Learn more about oligonucleotides:

https://brainly.com/question/14147877

#SPJ4

The amount of heat required to raise the temperature of 125.0 g of aluminum by 12°C is 1611 joules.

Temperature = 12°C

Mass = 125.0 g

To estimate the amount of heat required, we need to use the formula:

Q = m * c * ΔT

Q = the amount of heat in joules

m = the mass of the substance in kilograms

c = the specific heat capacity of the substance

ΔT = the change in temperature in degrees

The specific heat capacity of aluminum = 0.897 J/g°C.

Q = 125.0 g * 0.897 J/g°C * 12°C

Q = 1611 J

Therefore, we can conclude that the amount of heat required is 1611 J.

To learn more about the heat required

https://brainly.com/question/3727855

#SPJ4

Answer:

Yes, absolutely. Actually, nearly everyone is already a scientist, though they may not think of it that way.

Explanation:

A scientist is someone who systematically gathers and uses research and evidence, making a hypothesis and testing it, to gain and share understanding and knowledge. A scientist can be further defined by: how they go about this, for instance by use of statistics (Statisticians) or data (Data scientists). So, everyone is a scientist. It's just that most people don't realize it. A scientist is someone who tackles a problem through scientific methods, and we all do!

The volume of water that could be brought to a boil using one serving of the chosen food depends on the energy content of the food and the heat energy required to boil the water.

To determine the volume of water that could be brought to a boil at 100 °C using one serving of a chosen food as the fuel source, we need to consider the energy content of the food and the energy required to heat the water.

First, we need to identify the chosen food and its energy content. Different foods have different energy densities, which can be measured in units such as calories or joules per serving. Let's assume the chosen food has an energy content of X calories per serving.

The energy required to raise the temperature of water can be calculated using the specific heat capacity of water. The specific heat capacity of water is approximately 4.18 joules per gram per degree Celsius (J/g°C).

To calculate the volume of water, we need to convert the energy content of the food to joules and divide it by the energy required to raise the temperature of water. Since the energy content of food is typically given in calories, we need to convert calories to joules. One calorie is equivalent to 4.18 joules.

Let's assume one serving of the chosen food provides Y calories. The energy content in joules would be Y * 4.18 joules.Now, we can calculate the volume of water using the equation:

Volume of water = Energy content of food (in joules) / (Energy required to heat water * Change in temperature)

Let's assume we want to bring the water to a boil, which requires raising the temperature from room temperature (assumed to be 25 °C) to 100 °C. Therefore, the change in temperature would be 75 °C.

Volume of water = (Y * 4.18) / (4.18 * 75)

Simplifying the equation, we find that the volume of water that could be brought to a boil using one serving of the chosen food as the fuel source is:

Volume of water = Y / 75

For more such question on actual volume visit:

https://brainly.com/question/30986210

#SPJ8

Answer:

The rock in a bucket of water analogy is used to describe how air masses interact. When a warm air mass is placed over a cold air mass, it is like a rock being placed in a bucket of water. The warm air mass will initially rise, creating an area of low pressure. The cold air mass will then rush in to fill the area of low pressure, creating a storm. This type of weather causes thunderstorms, heavy rains, and high winds.

Answer:

YES!!!

Explanation:

Strong acids and strong bases are both strong electrolytes. In contrast, only a fraction of the molecules of weak acids and weak bases react with water to produce ions, so weak acids and weak bases are also weak electrolytes.

Answer:

is aluminium prepared in thin metal leaves with a thickness less than 0.2 mm (7.9 mils); thinner gauges down to 6 micrometres (0.24 mils) are also commonly used.[1] In the United States, foils are commonly measured in thousandths of an inch or mils. Standard household foil is typically 0.016 mm (0.63 mils) thick, and heavy duty household foil is typically 0.024 mm (0.94 mils). The foil is pliable, and can be readily bent or wrapped around objects. Thin foils are fragile and are sometimes laminated with other materials such as plastics or paper to make them stronger and more useful. Aluminium foil supplanted tin foil in the mid 20th century.

Nucleotides are organic molecules consisting of a nucleoside and a phosphate.

They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth. Nucleotides are obtained in the diet and are also synthesized from common nutrients by the liver.

Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine.

Nucleotides also play a central role in metabolism at a fundamental, cellular level. They provide chemical energy—in the form of the nucleoside triphosphates, adenosine triphosphate (ATP), guanosine triphosphate (GTP), cytidine triphosphate (CTP) and uridine triphosphate (UTP)—throughout the cell for the many cellular functions that demand energy, including: amino acid, protein and cell membrane synthesis, moving the cell and cell parts (both internally and intercellularly), cell division, etc.

Learn more about nucleoside at:

https://brainly.com/question/28482667

#SPJ4

As an example of how CO2 is utilized in industry, it is employed as an inert gas in welders and flame extinguishers, as just a pressurizing gas for air cannons and oil recovery, as a supercritical solvent in coffee decaffeination and supercritical drying.

Chemical intermediaries, such as methanol, syngas, & formic acid, can be produced from CO2 using a variety of catalysts. These molecules subsequently act as feedstocks in those other industrial processes.Additionally, CO2 can be converted by catalysts to polymers, which serve as building blocks for plastics, adhesives, & medications.

The creation of ethanol, fertilizer, natural gas processing, hydrogen synthesis in refineries, and, most recently, coal-fired power generation are among the industrial processes where large-scale carbon capture has been shown and is currently in use.

To know more about CO2 visit:

https://brainly.com/question/3049557

#SPJ4

The numbering system simply reflects the order of their discovery and does not imply a systematic progression or specific functional differences between them.

KV1 Channels: KV1 channels, also known as Shaker-related channels, are one of the earliest identified subtypes of potassium channels. They play a crucial role in regulating neuronal excitability. They are widely expressed in various tissues, including the nervous system, heart, and skeletal muscle.

KV2 Channels: KV2 channels are another subtype of potassium channels found in neurons. They exhibit distinct biophysical properties compared to KV1 channels. KV2 channels are involved in regulating neuronal firing patterns and neurotransmitter release.

KV3 Channels: KV3 channels, also known as Shaw-related channels, are a group of high-threshold, fast-activating/deactivating potassium channels. They are predominantly expressed in neurons, especially in regions involved in the generation of high-frequency action potentials, such as auditory neurons and certain types of interneurons.

KV4 Channels: KV4 channels belong to the A-type potassium channel family. They are characterized by their rapid activation and inactivation kinetics. KV4 channels are widely expressed in the brain, heart, and other tissues. In the brain, they are involved in regulating neuronal excitability and synaptic transmission.

To learn more about  progression

https://brainly.com/question/29359380

#SPJ11

Saccharin is a non-volatile and non-electrolyte substance. It is soluble in ethanol. The boiling point of ethanol is 78.50℃ at 1 atmosphere.

The dissolution of saccharin in ethanol does not affect the boiling point of the solution. The boiling point of ethanol is a physical property that refers to the temperature at which ethanol will change from a liquid to a gas phase. The boiling point of ethanol is 78.50℃ at 1 atmosphere pressure. This is an important factor to consider when using ethanol for various purposes, as it affects its performance and characteristics.

Saccharin, on the other hand, is a non-volatile and non-electrolyte substance. It is a synthetic compound that is widely used as an artificial sweetener in food and beverage products. When saccharin is dissolved in ethanol, it does not affect the boiling point of the solution because saccharin is non-volatile. Therefore, the boiling point of the solution remains at 78.50℃ at 1 atmosphere pressure.

To know more about   non-electrolyte visit:

brainly.com/question/14566383

#SPJ11

Balanced equation :

2Al +6HCI⇒ 3H₂ + 2AlCI₃

Given

Reaction (unbalanced)

Al +HCI⇒ H₂ + ALCI₃

Required

Balanced equation

Solution

Give a coefficient

aAl +bHCI⇒ cH₂ + AlCI₃

Al, left = a, right=1⇒a= 1

Cl, left = b, right=3⇒b=3

H, left = b, right=2c⇒b=2c⇒3=2c⇒c=3/2

The equation becomes :

Al +3HCI⇒ 3/2H₂ + AlCI₃ x 2

2Al +6HCI⇒ 3H₂ + 2AlCI₃

Answer:

80.0434 g/mol

Explanation:

Multiply the molar mass of each element by the number of atoms of that element. Then add the total masses.

AMU

2 N 14 28

4 H 1 4

3 O 16 48

Total = 80 g/mole

In this regard, let us first discuss the definition of a base is a substance that can accept a proton or hydrogen ion from another molecule. When a base accepts a proton, it forms a conjugate acid.

Hence, a base is a substance that can accept a proton in a chemical reaction. Let us now write the equation for F- acting as a base F- (aq) + H2O (l) → HF (aq) + OH- (aq). The equation shows that the fluoride ion accepts a proton from water, forming the fluoride ion's conjugate acid. In this reaction, fluoride ion (F-) acts as a Bronsted-Lowry base and accepts a proton from water (H2O), forming the conjugate acid, HF and the hydroxide ion (OH-) as shown in the above equation.

Let us now write the equation for C7H5O2− acting as a base C7H5O2- (aq) + H2O (l) ⇌ C7H6O2 (aq) + OH- (aq). The equation shows that benzoate ion acts as a base by accepting a proton from water to form the benzoic acid (C7H6O2) and hydroxide ion (OH-).

To know more about molecule visit:-

https://brainly.com/question/32298217

#SPJ11

Answer:

80 hours. 2,000 ÷ 25 = 80

This statement is not accurate. In water, the oxygen atom has a partial negative charge and the hydrogen atoms have partial positive charges due to the difference in electronegativity between the atoms.

Water is a polar molecule because it has an uneven distribution of electrons between the oxygen and hydrogen atoms. Oxygen is more electronegative than hydrogen, meaning it has a greater ability to attract electrons towards itself in a covalent bond. As a result, the shared electrons in the O-H bonds are pulled closer to the oxygen atom, creating a partial negative charge on the oxygen atom and partial positive charges on the hydrogen atoms.

This creates a dipole moment in the molecule, with a partially negative end (oxygen atom) and a partially positive end (hydrogen atoms), making it a polar molecule. The polar nature of water is important for many of its unique properties, such as its ability to dissolve many polar and ionic substances, its high surface tension, and its role in many biological processes.

Learn more about hydrogen atoms here https://brainly.com/question/29661778

#SPJ4

The empirical formula is therefore CH.Now we can calculate the empirical formula. Divide the number of moles of each element by the smallest number of moles to get a simple whole number ratio:
Carbon: 0.5250 mol C / 0.5250 mol = 1
Hydrogen: 0.5242 mol H / 0.5250 mol = 0.997

To find the empirical formula for the hydrocarbon, we need to determine the moles of each element present in the combustion reaction.
First, let's determine the moles of oxygen used:
18.214 g of O2 x 1 mol O2/32.00 g = 0.5698 mol O2
Next, let's determine the moles of carbon dioxide produced:
23.118 g of CO2 x 1 mol CO2/44.01 g = 0.5250 mol CO2
Finally, let's determine the moles of water produced:
4.729 g of H2O x 1 mol H2O/18.02 g = 0.2621 mol H2O
To find the moles of carbon present in the hydrocarbon, we can use the fact that the amount of carbon in the hydrocarbon equals the amount of carbon in the carbon dioxide:
0.5250 mol CO2 x (1 mol C/1 mol CO2) = 0.5250 mol C
To find the moles of hydrogen present in the hydrocarbon, we can use the fact that the amount of hydrogen in the hydrocarbon equals the amount of hydrogen in the water:
0.2621 mol H2O x (2 mol H/1 mol H2O) = 0.5242 mol H
Now we can calculate the empirical formula. Divide the number of moles of each element by the smallest number of moles to get a simple whole number ratio:
Carbon: 0.5250 mol C / 0.5250 mol = 1
Hydrogen: 0.5242 mol H / 0.5250 mol = 0.997
The empirical formula is therefore CH.

learn more about formula for the hydrocarbon here

https://brainly.com/question/30884168

#SPJ11

In the Lewis structure of methanol (CH3OH), the OH group is placed on the outside because it is an important functional group that influences the chemical properties and reactivity of the molecule.

The Lewis structure is a representation of a molecule that shows the arrangement of atoms and valence electrons. In methanol, carbon (C) is the central atom bonded to three hydrogen (H) atoms and one oxygen (O) atom. The oxygen atom forms a single bond with carbon and also has two lone pairs of electrons.

The placement of the OH group (hydroxyl group) on the outside of the Lewis structure is significant because it determines the chemical behavior of methanol. The OH group consists of an oxygen atom bonded to a hydrogen atom and represents the presence of an alcohol functional group.

In organic chemistry, functional groups are specific arrangements of atoms within a molecule that give rise to characteristic chemical reactions and properties. The presence and position of functional groups can greatly influence the behavior and reactivity of a compound. In the case of methanol, the hydroxyl group provides the molecule with its characteristic properties.

know more about valence electrons here:

https://brainly.com/question/371590

#SPJ8

Step 1

The reaction:

Ca(OH)2 (aq) + 2 HBr (aq) => CaBr2 (aq) + 2 H2O (l) (compelted and balanced)

----------------

Step 2

Information provided:

0.0105 M HBr

125 mL of 0.0100 M Ca(OH)2

----------------

Step 3

The number of moles of Ca(OH)2:

Molarity (mol/L) = moles of Ca(OH)2/volume of the solution (L)

Volume = 125 mL x (1 L/1000 mL) = 0.125 L

Therefore,

Molarity x volume (L) = moles

0.0100 mol/L x 0.125 L = 1.25x10^-3 moles of Ca(OH)2

-----------------

Step 4

The number of moles of HBr, by stoichiometry:

Ca(OH)2 (aq) + 2 HBr (aq) => CaBr2 (aq) + 2 H2O (l)

1 mol Ca(OH)2 ------ 2 moles HBr

1.25x10^-3 moles ------ X

X = 1.25x10^-3 moles x 2 moles HBr/1 mol Ca(OH)2

X = 2.5x10^-3 moles HBr

----------------

Step 5

The volume of HBr needed:

Molarity = moles of HBr/volume of solution (L)

Volume = moles of HBr/molarity

Volume = 2.5x10^-3 moles HBr/0.0105 mol/L

Volume = 0.238 L

Volume = 0.238 L x (1000 mL/1 L) = 238 mL

Answer: 238 mL or 0.238 L (there are no matches)

The pressure in the syringe would read 257.3 psi if the volume is reduced to 2 ml.

Boyle's Law is a gas law that describes the relationship between the pressure and volume of a gas at a constant temperature. It states that the pressure and volume of a gas are inversely proportional.

An ideal gas is a theoretical gas that conforms to the kinetic theory of gases. We can say that gas is ideal when it has low pressure, High temperature, and gas particles should not react with each other or the walls of the container.

We can use Boyle's Law,

P₁V₁ = P₂V₂

We can plug in the values given:

P₁ = 14.7 psi

V₁ = 35 ml

V₂ = 2 ml

Solving for P₂, we get:

P₂ = (P₁ x V₁) / V₂

P₂ = (14.7 psi x 35 ml) / 2 ml

P₂ = 257.25 psi

Therefore, the pressure in the syringe would read 257.3 psi if the volume is reduced to 2 ml.

To learn more about gases, visit here:

brainly.com/question/1369730

#SPJ1

The percent composition of copper in CuCl2 is approximately 47.29%.

The molar mass of CuCl2 is approximately 134.45 g/mol (63.55 g/mol for copper + 2 x 35.45 g/mol for chlorine).

To calculate the percent composition of copper (Cu) in CuCl2, we need to determine the mass of copper in 1 mole of CuCl2.

The mass of copper in 1 mole of CuCl2 is 63.55 g/mol (the molar mass of copper).

So, the percent composition of copper in CuCl2 is:

(63.55 g Cu / 134.45 g CuCl2) x 100% = 47.29%

Therefore, the percent composition of copper in CuCl2 is approximately 47.29%.

Learn more about copper:

https://brainly.com/question/29549873

#SPJ4

The mineral that's illustrated based on the information given will be magnetite.

A mineral simply means any pure substance that has a unique composition and structure.

Since the mineral is black and will stick to you when you walk through the sand at the beach, it's magnetite.

Learn more about mineral on:

brainly.com/question/15844293

#SPJ12