Let say that I want to get my mixture to a certain pH but I add too much water to my solution.Can I just add the same volume of my substance as the water I added back into the mixture to get my initial pH?

Answer:

Explanation:

              ..                         |   ..    |   -

K.  +     : Br .   ---->      K⁺  | : Br : |

              ..                         |   ..    |

The concentration of A and B after 80 s  if the initial concentration of ab is 0.260 m, and the reaction mixture initially contains no products is 0.0091 M.

To find the concentrations of A and B after 80 s, we must write the kinetic data is given as follows for the reaction:

AB ⟶ A + B

Initial rate of the reaction is 1.62 x 10⁻³ mol/L/s

Order of reaction for AB is first order (n = 1). Now, using the first-order rate equation, the concentration of AB at time t, [AB]t can be calculated as follows:

ln [AB]0/[AB]t = k

tHere, [AB]0 is the initial concentration of AB, [AB]t is the concentration of AB at time t, k is the rate constant, and t is the time interval.

To determine the rate constant, we can use the initial rate of reaction.

Initial rate, ri = k[AB]n

Here, n is the order of reaction.

So, k = ri/[AB]n

Substituting the given values:

ri = 1.62 x 10⁻³ mol/L/s[AB]0

= 0.260 mk = ri/[AB]n

= 1.62 x 10⁻³ mol/L/s / (0.260 m)1

= 6.23 s-1

Now, we can use the rate constant to determine the concentration of AB at 80 seconds:

ln [AB]0/[AB]80 = kt

Here, k = 6.23 s-1, [AB]0 = 0.260 m, and t = 80 s.

Substituting the values:

ln (0.260 m)/[AB]80

= (6.23 s-1) (80 s)[AB]80

= [AB]0 e-kt

= (0.260 m) e-(6.23 s-1) (80 s)

= 0.0091 m

Now, since the stoichiometry of the reaction is 1:1, the concentration of A and B will be equal to each other. Therefore, [A]80 = [B]80 = 0.0091 m.

Thus, the final concentrations of A and B are 0.0091 M after 80 seconds.

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Answer:

Stronger

And its science

Explanation:

Answer:

stronger for top.

weaker for bottom.

passed all sciences in freshman year :D

Nuclear processes alter the sorts of atoms present, but chemical reactions do not. The electrons in the atom play a significant role in chemical reactions when nucleus reactions occur in atom nuclei.

The energy found in an atom's nucleus, or core, is known as nuclear energy. Energy maintains the nucleus of atoms together, the minuscule units that make up all matter in the universe. The dense nucleus of an atom has an enormous quantity of energy.

The most lethal weapons on earth are nuclear weapons. One can wipe out an entire metropolis, perhaps killing millions of people, endangering the ecosystem and the lives of future generations due to its long-term devastating impacts.

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answer: a filter funnel is used to separate solids from liquid through a cone shaped filter placed inside the funnel.

You will use a filter funnel in this experiment to

Answer:

Separate cabbage from liquid

Answer:

When endothermic reaction takes place, the system gains heat from the surroundings and so the temperature of the surroundings decreases ie. it gets colder

Explanation:

A chemical reaction is exothermic if heat is released by the system into the surroundings.

STUDY WELL!

Answer:

they should have a number that can completely transfer and fill the other atom

Explanation:

example:

sodium(2.8.1)and Chlorine(2.8.7)the sodium will give chlorine the 1 valence electrobo so they both become stable(2.8)±and(2.8.8)–

magnesium(2.8.2)and oxygen(2.6)same way as above to abtain mg(2.8)±²and oxygen(2.8)–²

When oxygen (O2) and nitrogen (N2) react, the molecule NO2 may be produced as a . II. Oxygen atoms gain two electrons from nitrogen atoms to make O2, and nitrogen atoms give up four electrons to form N4+ ions.

The outside of the nucleus is surrounded by electrons, which are negatively charged particles. Scientists may have trouble observing them since they rotate so quickly. The tiniest particles in an atom, with 2000 of them fitting into a proton, they are drawn to the protons' positive charge. −

With a negative charge, electrons are a particular subatomic particle type. Positively charged subatomic particles called protons fall into this category. The strong nuclear force is responsible for the protons' interconnection in an atom's nucleus. Subatomic particles without charge include neutrons (they are neutral).

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Answer:

A. Receptors in muscles provide the brain with information about body position and movement.

Explanation:

Answer:

dissolving sugar in water is a physical change.

cooking a hamburger is a chemical change.

boiling an egg is also a chemical change.

burning a match is a chemical change.

Explanation:

1. because we can evaporate water to separate water and sugar.

2. cooking anything with heat or fire is a chemical change.

3. egg became hard boiled can not change back into liquid stuff or raw.

4. anything that gets burned down is a chemical change.

Based on the nature of physical change, dissolving sugar in water is a physical change .

What is a physical change?

A physical change is a change which does not produce new substances and which can be easily reversed. Physical changes do not alter the chemical composition of a substance. Examples of physical changes include: Melting of candle wax dissolving sugar in water freezing of water Therefore, dissolving sugar in water is a physical change.

Hence, the correct option is D) C5H7O3.

Nicotine is an addictive substance that is found in cigarettes.

The chemical formula for nicotine is C10H14O6.

To determine the empirical formula, one must find the smallest whole-number ratio of the atoms present. For that, we need to divide the subscripts by their greatest common divisor which in this case is 2.

According to the question, the chemical formula of nicotine is C10​H14​O6​.We need to determine its empirical formula.

To do this, we divide each subscript by their greatest common divisor which is 2 in this case.C10H14O6→C5H7O3Therefore, the empirical formula of Nicotine is C5H7O3.

Hence, the correct option is D) C5H7O3.

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Answer:

The volume of the gas when it is released from the tanks will be equal to 10.00 L x (150.0 mmHg / 3.400 x 10⁴ mmHg) = 0.004412 L.

Explanation:

Answer:

The following relationship makes this possible: 1 mole of any gas at standard temperature and pressure (273 K and 1 atm) occupies a volume of 22.4 L.

Explanation:

1 mole of any gas would occupy 22.4L of gas at standard temperature and pressure (STP) i.e at 273K and 1 atm.

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P V = n R T

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The given statement "Order of the reaction can be determined by looking at the coefficients in the balanced chemical equation for the reaction" is false. Because order of a reaction cannot be determined solely by looking at the coefficients in the balanced chemical equation. Option B is correct.

The order of a reaction can only be determined experimentally by measuring the rate of the reaction under different conditions, such as changing the concentrations of reactants or changing the temperature.

The rate equation obtained experimentally may or may not have the same stoichiometric coefficients as the balanced chemical equation. Therefore, it is not always possible to determine the order of the reaction based solely on the balanced chemical equation.

Hence, B. False is the correct option.

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Being aware of the effects of destructive forces on coastal areas is crucial for ensuring safety, planning and preparedness, protecting the environment, and minimizing economic impacts.

It is important for coastal areas exposed to destructive forces to be aware of the effects of these forces for several reasons:

Safety: Being aware of the effects of destructive forces such as storms, hurricanes, and tsunamis can help people in coastal areas take necessary precautions to protect themselves and their property. This could include evacuating the area, securing their homes, and preparing emergency kits.

Planning and Preparedness: Understanding the potential impact of destructive forces on coastal areas can also help local authorities and emergency responders plan for and respond to potential disasters. This could include creating evacuation plans, stockpiling emergency supplies, and ensuring that infrastructure such as roads and bridges can withstand the impact of these forces.

Environmental Protection: Destructive forces can also have significant impacts on the natural environment in coastal areas. By understanding these effects, coastal communities can take steps to protect fragile ecosystems and minimize damage to wildlife and natural habitats.

Economic Impacts: Coastal areas are often heavily reliant on tourism and other industries that depend on a healthy environment. Being aware of the potential impacts of destructive forces can help communities prepare for and mitigate economic losses resulting from these events.

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It is important for coastal areas exposed to destructive forces to be aware of the effects of these forces because it can help them to be better prepared for and to mitigate the potential impacts of natural disasters and extreme weather events.

Coastal areas are often subject to a range of destructive forces including hurricanes, storm surges, tsunamis and erosion caused by waves and currents. These forces can cause significant damage to infrastructure, buildings and natural resources, as well as threaten human lives.

Therefore, It is important for coastal areas exposed to destructive forces to be aware of the effects of these forces because it can help them to be better prepared for and to mitigate the potential impacts of natural disasters and extreme weather events.

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Therefore,  the addition of 14C-labeled UTP to the growth medium of cells will result in the labeling of RNA moles.

When 14C-labeled uridine triphosphate (UTP) is added to the growth medium of cells, the macromolecule that will primarily be labeled is RNA. Uridine triphosphate is a nucleotide that serves as a building block for RNA synthesis. Cells utilize UTP during the transcription process to incorporate uridine into newly synthesized RNA molecules.

The 14C label on UTP indicates the presence of a radioactive carbon isotope (carbon-14). As cells incorporate the labeled UTP into RNA molecules, the RNA strands will become labeled with carbon-14. This allows for the tracking and detection of newly synthesized RNA in the cell.

Phospholipids, DNA, and proteins are not directly synthesized using uridine triphosphate, and therefore they would not be labeled by the addition of 14C-labeled UTP. Phospholipids are primarily composed of glycerol and fatty acids, DNA is synthesized using deoxyribonucleotides, and proteins are synthesized using amino acids.

Therefore,  the addition of 14C-labeled UTP to the growth medium of cells will result in the labeling of RNA moles.

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Answer:

37.1g of HCl

Explanation:

rate as brainliest

Answer:

b) Every experienced cooks at home tend not to use recipes, instead based entirely upon their knowledge of cooking technique.

Explanation:

This is because even the most experienced cooks might make a mistake, so having a recipe where they can follow is better than just use their knowledge. If his or her knowledge has a mistake it might create a big consequence.

The student should use [Ar] as the starting point in writing the condensed electron configuration for silver (Ag). The correct answer is option d.

[Ar] represents the electron configuration of Argon, which is the element in Group 8A (also known as Group 18) directly before silver. The condensed electron configuration is a shorthand way of representing the electron configuration of an element.

In a condensed electron configuration, only the electron configuration for the highest energy level (valence shell) is shown. For example, the electron configuration of silver (Ag) is [Kr] 5s1. In this configuration, the [Kr] represents the electron configuration of krypton (Kr), which is the preceding element in the periodic table, and the 5s1 represents the valence shell electron configuration of silver.

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Answer:

friction

Explanation:

conduction doesn't really need much to start it. it basically has that reaction from the start so it's not conduction. Since heat is produced by friction in this situation it causes static to happen. so i think its friction

The classification is:

Organic substances known as amino acids have both amino and carboxylic acid functional groups. Only 22 of the hundreds of amino acids found in nature are alpha amino acids, which are by far the most common and make up proteins. Only 22 alpha amino acids are found in the genetic code. Alpha-, beta-, gamma-, or delta-amino acids can be categorized according to where the main structural functional groups are located; further classifications relate to polarity, ionization, and the kind of side chain group (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.). Amino acid residues are the second-largest component of human muscles and other tissues, behind water, in the form of proteins.

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The best thing Ka can do next to determine the objectivity of the source is conduct an internet search for cardiac problems + omega-3 fats. Thus option C is correct.

Cardiac problems are defined as the problems that occurs in heart and blood vassals of heart.

The common cardiac problems are

A significant family of polyunsaturated fats is the omega-3 family.

Thus, the best thing Ka can do next to determine the objectivity of the source is conduct an internet search for cardiac problems + omega-3 fats. Thus option C is correct.  

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Answer:

it is A.

Explanation:

determine whether the evidence cited reflects more than one side

Answer:

C.

Explanation:

Butane (C4H10) has 3 C-C bonds in the carbon chain and 10 C-H bonds

Butane (\(C_4H_10\)) has 3 C-C bonds in the carbon chain and 10 C-H bonds

Alkanes are saturated hydrocarbons. This means that their carbon atoms are joined to each other by single bonds.

Based on the diagram, butane is considered to be an alkane. It not only contains single covalent bonds, but also has carbon and hydrogen atoms present in its structure.

When comparing both structures to one another, isobutane is a branched chain, while butane is a linear chain.

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Answer:

The B. Is perfect match of a definition of chemical property.

Explanation:

The ability of gunpowder to explode.

The ability of gunpowder to explode is the best definition of a chemical property.

The change of one type of matter into another type of matter and inability to change into the previous forms is called a chemical property. Examples of chemical properties include reactivity and heat of combustion.

So we can conclude that the ability of gunpowder to explode is the best definition of a chemical property.

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Ranks the objects from most to least dense : X,Z,Y,W

Given

Object W : m=16 g, V=84 cm³

Object X : m=12 g, V= 5 cm³

Object Y : m=4 g, V= 6 cm³

Object Z : m=408 g g, V= 216 cm³

Required

Density

Solution

Density formula:  

\(\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}\)

ρ = density  

m = mass  

v = volume  

1. Object W

\(\tt \rho=\dfrac{16}{84}=0.19\)

2. Object X

\(\tt \rho=\dfrac{12}{5}=2.4\)

3. Object Y

\(\tt \rho=\dfrac{4}{6}=0.67\)

4. Object Z

\(\tt \rho=\dfrac{408}{216}=1.89\)

From most to least dense : X,Z,Y,W

Answer:

319

Explanation:

The molecular mass of C3H18 can be found by adding up the molecular weights of carbon and hydrogen so, (12.01 x 3) For Carbon and (1.008x18) for hydrogen. You will find it is 54.174g/mol.

To find grams muliply g/mol by mols so 5.9 x 54.174= 319 i didnt see any errors with my math so maybe you clicked 8 by accident but i may just be wrong

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination. HOPE it helps

Answer:

it's sample c yh it is true