To determine the rate law for the reaction A + B -> products, we need to examine how the rate of the reaction changes as the concentrations of A and B change. From the given data, we can see that when the concentration of A is doubled, the rate of the reaction also doubles. Similarly, when the concentration of B is doubled, the rate of the reaction also doubles. This indicates that the rate of the reaction is directly proportional to the concentrations of both A and B.
Based on this information, the rate law for the reaction can be expressed as Rate = k[A]*[B], where k is the rate constant. The exponents x and y in the rate law represent the order of the reaction with respect to A and B, respectively. Since the rate of the reaction is directly proportional to the concentrations of both A and B, the exponents x and y would both be equal to 1.
Therefore, the values of x and y are C) x = 1 and y = 1.
What ion will Magnesium form?
Indicate whether each of the following molecules is capable of geometrical (cis-trans) isomerism. Check all that apply. O 1,3-dichloro-2-butene O 1,4-dichlorobenzene O 1,1-dichloro-1-butene O 4,5-dimethyl-2-pentyne
1,3-dichloro-2-butene and 1,1-dichloro-1-butene.Geometrical isomerism, also known as cis-trans isomerism, occurs when a molecule has two or more structural isomers that differ in the spatial arrangement of the atoms.
Cis-trans isomerism is only possible when the molecule has at least one carbon-carbon double bond. In this type of isomerism, the two isomers differ in the orientation of the substituent groups around the double bond. 1,3-dichloro-2-butene and 1,1-dichloro-1-butene both contain a carbon-carbon double bond and are therefore capable of geometrical isomerism. 1,4-dichlorobenzene does not contain a carbon-carbon double bond and therefore is not capable of geometrical isomerism. 4,5-dimethyl-2-pentyne also does not contain a carbon-carbon double bond and is therefore not capable of geometrical isomerism.
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The boiling point of acetone is 50.5°C, while the boiling point of water is 100°C. Bringing a solution made of water and acetone to which of the following temperatures would allow the separation of these two liquids?
The temperature must be greater than 50.5°C and less than 100°C.
What is temperature ?
Temperature is a physical property that is used to measure the average kinetic energy of particles in a system, such as a gas, liquid, or solid. It is measured in units of degrees on the Celsius, Fahrenheit, or Kelvin scales.
Temperature is related to the average kinetic energy of particles in the system, and is affected by the number of particles, their mass, and the strength of their interactions.
Which temperature range is typical?
Core temperature is 98.6 F on average (37 C). However, the average body temperature might be anywhere from 97 F (36.1 C) to 99 F (37.2 C) or higher. Depending on the period of year or how busy you are, your body temperature may change. In general, elderly people's temperature are lower than those of younger people.
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Which one of the following solutions would have a pH value greater than 7?
Group of answer choices
0.0001 M HCl
[H+] = 1.3 x 10-2 M
[H+] = 2.4 x 10-12 M
[H+] = 4.4 x 10-4 M
Answer:
The 2 one
Explanation:
b. The heat of reaction for the process described in (a) can be determined by
applying Hess's law. The heats of reaction shown in the table below can be
obtained experimentally or looked up in tables of enthalpy data. Which two of
these heats of reaction would be the easiest and safest to measure in the
laboratory, and which two are better obtained through reference sources?
Why? Hint: Consider whether a reaction takes place in aqueous solution or
instead involves noxious gases.
Answer: I believe the 1st and 3rd reactions are better obtained through reference sources and the 2nd and 4th are easiest and safest to measure in the laboratory.
Explanation:
I am also working on this Pre-lab right now, and I looked back at the first question to help get my answer. In the first question (a), it is noted that ammonia gas and gaseous hydrochloric acid are both potentially dangerous in gaseous form. I saw that both the 1st and 3rd reactions contained noxious gases (I knew this because there was a (g) in both of these reactions). Using the knowledge from the first question that the noxious gases were potentially dangerous, I assumed that those reactions were the ones that are better obtained through the reference sources. The 2nd and 4th reactions did not contain any noxious gases, so I assumed those ones were easiest and safest to measure in the laboratory. Hope this helps!
Calculate the mass of water needed to prepare 45 g of salt solution if the salt content in the solution is 12%.
The mass of water needed to prepare 45 g of salt solution if the salt content in the solution is 12% is 330g.
The solute is the thing that needs to dissolve, and the solvent is the thing that needs to dissolve it. With a wide variety of solutes and solvents, solutions can be created. We are aware of a wide range of solutions.
Given,
Mass of the salt solution (Solute) = 45g
salt content in the solution = 12%
Let Mass of water = x
Total mass of solution = 45 + x
Concentration of solution = Mass of solute / Mass of Solution × 100
⇒ 12 = 45 / 45 + x × 100
⇒ 12/100 = 45 / 45 + x
⇒ 0.12 = 45 / 45 + x
⇒ 0.12 (45 + x) = 45
⇒ 5.4 + 0.12x = 45
⇒ 0.12x = 45 - 5.4
⇒ x = 330g
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Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium nitrate is dissolved in water?
S° (J/K•mol)
NaNO3(s) 116.3
Na+(aq) 60.25
NO3–(aq) 146.4
Will the solubility of sodium nitrate increase or decrease if the temperature of the system is increased?
Thermodynamic data is data that relates to the physical properties of a system related to temperature, pressure, and energy.
What is Thermodynamic data?
Thermodynamic data is data that describes the physical properties of a material system in terms of temperature, pressure, and other thermodynamic variables. It is used to predict the behavior of materials in different conditions and to analyze processes such as heat transfer or chemical reactions. It is also used to design and optimize energy systems, such as engines and power plants.
The standard change in entropy when one mole of sodium nitrate is dissolved in water is:
ΔS° = S° (products) - S° (reactants)
ΔS° = (60.25 + 146.4) - 116.3 = 90.3 J/K•mol
The solubility of sodium nitrate will increase if the temperature of the system is increased.
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Help would be GREATLY appreciated!!
54.0g Al reacts with 64.0g O2 to form Al2O3 according to the equation. 136 grams of Al2O3 form from 64.0 g O2.
What is molar mass ?The term molar mass is defined as the the ratio between the mass and the amount of substance of any sample of that compound. The molar mass is denoted by the symbol "M".
M = m / n
Molar Mass of O₂ is 32 g/mol
Molar Mass is Al₂O₃ is 102 g/mol
4 Al + 3 O₂ ⇒ 2 Al₂O₃
64.0 g O₂ 1 mole 2 moles Al₂O₃ 102 g
----------------- x -------------- x ------------------------ x -------------
32 g 3 moles O₂ 1 mole
= 136 g Al₂O₃
Thus,54.0g Al reacts with 64.0g O2 to form Al2O3 according to the equation. 136 grams of Al2O3 form from 64.0 g O2.
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A compound is composed of carbon and hydrogen and has an empirical
formula of CH. The molar mass of the compound is experimentally
determined to be 78.12 g/mol. What is the molecular formula for the
compound?
A compound has the empirical formula CH and is made up of carbon and hydrogen. the compound's molecular formula is C6 H6.
How is a molecular compound identified?Compounds that involve a metal binding with a non-metal or a semi-metal will typically exhibit ionic bonding. Molecular compounds are those whose only non-metals or semi-metals contain non-metals. These compounds exhibit covalent bonding.
The compound with the lowest whole number ratio can be found in its empirical formula.
The empirical formula for weight is 12+1=13,
while the molecular formula for weight is 13 78 = 6.
The molecular formula for weight is (CH)n = (CH)6 =C6 H6.
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A 325 0 g piece of gold at 427 degree C is dropped into 200.OmL of water at 22 0 degree C. Calculate the final temperature of the mixture. Specific Heat of gold
The final temperature of the mixture is 218.1°C.
The Specific Heat of gold 0.0123 J.
What is specific heat ?Specific heat is known to be the amount of energy required to raise the temperature of a unit mass of a substance by 1 degree. It is a physical property of matter, usually expressed in units of Joules/Kilograms/Kelvin (J/kgK).
Mass of gold = 325 g
Heat absorbed by water = mass of gold x specific heat x temperature change
325 x 0.128 x 405
Heat absorbed by water = 154,400 J
Heat capacity of water = mass of water x specific heat
200 x 4.184
Heat capacity of water = 836.8 J/degree Celsius
Final temperature = (heat absorbed by water ÷ heat capacity of water) + Initial temperature
Final temperature = (154400 ÷ 836.8) + 22
Final temperature = 218.1°C
Q = mcΔT
836.8 J/°C = 325 × c × (427°C - 218.1°C)
836.8 J/°C = 325 × c × 208.9
c = 836.8/(325 × 208.9)
c = 836.8/67,892.5
c = 0.0123 J
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Thymine and adenine form a base pair in the DNA molecule. These two bases can form a connection between two strands of DNA via two hydrogen bonds. Which of the following diagrams shows the correct representation of the hydrogen bonding (denoted by dashed lines) between thymine and adenine base pairs? (In each diagram. thymine is shown at the left and adenine is shown at the right. The bases are attached to the backbone portion of the DNA strands.)
The diagram on the right shows the correct representation of the hydrogen bonding between thymine and adenine base pairs.
What is thymine?Thymine is one of the four nitrogenous bases found in DNA. It is a pyrimidine base that pairs with Adenine in DNA to form a base pair. Thymine is essential for the proper replication and expression of genetic information and is the only base that bonds with Adenine in DNA. By forming base pairs, thymine helps to maintain the structure of DNA. It also helps to prevent errors in replication and transcription. Thymine is also found in RNA, but instead of bonding with Adenine, it bonds with Uracil.
The hydrogen bonds form between the nitrogenous bases of the two complementary strands of DNA. The thymine molecule has two hydrogen atoms that bind to the nitrogen atom of the adenine molecule. The adenine molecule has two hydrogen atoms that bind to the nitrogen atom of the thymine molecule. This creates a strong link between the two strands of DNA, which is essential for the replication of the genetic material.
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When ammonium chloride and water interact, less energy is released from breaking the bonds in the water and ammonium chloride than what is required to form the bonds of the new substance.What is happening in the reaction
Endothermic reaction is taking place in the reaction; as ammonium chloride and water contact, less energy is generated by breaking the bonds between the two substances.
Than what is needed to create the new substance's connections. Endothermic reactions are those in which the reactants take in heat energy from their environment to create products. These reactions produce a cooling effect by bringing the temperature of the space around them lower. Endothermic physical processes are also possible; for example, ice cubes can melt into liquid water by absorbing heat energy from their environment (no chemical bonds are broken or formed). With the chemical formula NH4Cl, ammonium chloride is an inorganic substance that is a white, crystalline salt that is very soluble in water.
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Please help me thank u sm
The amount of suplher in grams to rpoduce 25.9 kJ energy= 10.95g
Here the reaction is,
S(s) + 2CO(g)
Hrxn=-75.8 kJ energy.
Answer,
The amount of Sulpher in grams to produce 25.9 kJ energy= xg=?
We know that 1mole Sulpher results in the production of \ bigtri angle up Hrxn=75.8 kJ/mol energy.
25.9 kJ of energy produced from how many grams of sulpher= 25.9 kJ / 75.8 kJ/mol = 25.9g/75.8g/mol
=0.34 mol of sulpher
The amount of 0.34 moles of sulpher in grams= Number of moles * Molar mass
( Molar mss of Sulpher= 32.06g'/mol)
= 0.34mols * 32.06g /mol
=10.95 g
The amount of suplher in grams to rpoduce 25.9 kJ energy= 10.95g
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What is cohesion? Water molecules sticking to other types of molecules Water molecules sticking to other water molecules
Answer:
Water molecules sticking to other water molecules
Explanation:
Each water molecule can form four hydrogen bonds with neighbor molecules. The surface tension produced by cohesion makes it possible for light objects to float on water without sinking (e.g., water striders walking on water).
A 50.0 mLmL sample of 0.200 MM sodium hydroxide is titrated with 0.200 MM nitric acid. Calculate the pHpH in the titration after the addition of 60.0 mLmL of 0.200 MHNO3MHNO3 .
A rough estimate of the excess pH of the solution is 1.74.
The answer to the question is that the concentration of NaOH is 0.2 M.
The question also states that the concentration of HNO3 is equal to that of NaOH, which is 0.2 M.
The volumes of sodium hydroxide and nitric acid that are provided to us are 50 mL and 60 mL, respectively. This implies that adding the two will result in the final volume.
= 50 plus 60 equals 110, or 0.11 liters
We know that there is a neutralizing reaction between NaOH and HNO3 based on theory. Then, as a means of answering the question, we record the aforementioned equation.
OH⁻ + H⁺ ---> H₂O
Finally, we apply logarithm to get our final answer
pH = - log [ H⁺ ]
pH = - log [0.01818]
pH = 1.74
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Is meter stick used in sewing?
Measuring fabric is one purpose for this wooden metric and meter stick that is perfect for many different applications.
Often employed in the construction business, a meterstick, metrestick, as well as yardstick refers to a straightedge or even a foldable ruler was using to measure length. They were frequently built of plastic or wood, with metal as well as plastic joints which enable folding.
A sewing or seam gauge would be a compact but helpful instrument for gauging tiny distances. The spaces needed for buttonholes as well as buttonhole spacing can also be measured using the sewing gauge, along with hemlines, tucks, as well as pleats.
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Paul added a sample of bromic acid to water and found the pOH to be 10. What is the pH of the solution?
Answer:
Explanation:
pH + pOH = 14
pH + 10 = 14
pH = 14 - 10 = 4
Therefore pH of the solution is 4 .
What is Gay- Lussacs law? State the definition of law in your own words.
Constellations show that Earth’s position is always _____________. Stationary or moving
Answer:
moving
Explanation:
Earth's position is always moving in more ways than one. earth moves around the sun and it also rotates on its axis.
What happens as you move down and to the left on the periodic table?
Travelling from left to right through a period of such a periodic table reduces the size of both atom.
Traveling from left to right inside a period of such periodic table causes the size of the atom to shrink. The number of protons and the positive nuclear energy both rise with such an increasing in the atomic number. The diameter of the atom shrinks as the nucleus draws the outermost electron.
Since they are eager to give up electrons and form cations, the substances on the left column of the periodic table possess low ionization energies.
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Por qué los alimentos se dañan con mayor facilidad a temperatura ambiente que cuando están en la nevera?
Answer:
Esto se debe a que la heladera tiene mucha menor temperatura que la temperatura ambiente.
Esta menor temperatura ayuda a luchar contra los microorganismos que están en los alimentos (bacterias, hongos, etc) pues detiene en gran medida su repreduccion, la cual se ve maximizada en los rangos entre 5°C y 60°C, tal que la temperatura ambiente suele estar en el rango donde los microorganismos prosperan y se reproducen, es por ello que los alimentos se conservan mucho mejor en ambientes fríos (como la nevera) que en temperatura ambiente.
please help me im literally so confused
Answer:
A
Explanation:
Mark me brainliest pls
Answer the following questions ( image) with the given options.
3.Ca(HCO3)2
4. use of Ca(OH)2
a noticeably different form or state of the substance
Phase is a a noticeably different form or state of the substance. When energy is added to or removed from a system, matter can change states.
What is state of matter?Solids, liquids, gases, but also plasma are the four states of matter that may be found in daily life. However, a number of additional states of matter have been found. Some of these additional states are created when a material transitions among 2 states of matter and doesn't actually exhibit the characteristics of either state.
When energy is added to or removed from a system, matter can change states. This energy often originates from changes in temperature or pressure. Phase transitions or phase changes occur when matter changes states. Phase is a a noticeably different form or state of the substance.
Therefore, phase is a a noticeably different form or state of the substance.
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Why is it important to recycle electronic waste?
It saves energy, minimizes air and water pollution, cuts greenhouse gas emissions, and protects natural resources. Stanford recycled, composted, and otherwise decreased its trash by 62% and reduced landfill by 35%.
What is recycle?It saves energy, minimizes air and water pollution, cuts greenhouse gas emissions, and protects natural resources. Stanford recycled, composted, and otherwise decreased its trash by 62% and reduced landfill by 35%. The process of transforming waste resources into new materials and things is known as recycling. This notion frequently includes the recovery of energy from waste materials. The capacity of a material to regain the attributes it had in its original form determines its recyclability. Recycling is the collection and processing of items that would otherwise be discarded as waste in order to create new goods. Recycling may help your town, economy, and environment.
Here,
It saves energy, decreases air and water pollution, lowers greenhouse gas emissions, and protects natural resources. Stanford recycled, composted, and avoided landfill by 62% and 35%, respectively.
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Indicate whether F3C−C≡N is linear, planar, or neither.
O linear
O planar
O neither linear nor planar
Left C would be neither linear and neither planar since, in accordance with the preceding definition, it has a tetrahedral form.
Which is better, planar or non-planar?Since no links cross one another, graph A is planar. Because so many connections overlap, graph B is not plane. Additionally, graph B's linkages cannot be rearranged in a way that makes it planar.
How does one recognize planar?A compound is said to be planar if every atom inside it is located on the same plane. - Take the organic compound, for example. When the carbon atoms of an organic molecule lay within a single plane, the complex is referred to as a planar compound.
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A potassium-40 sample starts with 50 atoms, and 1.25 billion years later, there are 25 atoms. What is the half-life of potassium-40?
A. 2.5 billion years
B. 25 years
C. 40 years
D. 1.25 billion years
Which of thee would NOT
be conidered a biome?
A. A region that ha everal grouping of
the ame plant communitie. B. A region that ha everal grouping
of the ame animal communitie. C. A mall habitat that contain it own
ecoytem (uch a a tree tump). D. A large area of the Earth that ha a
imilar climate
A large area of the Earth that has a similar climate is not considered a biome.
Hence, option D is correct.
Scientists can identify a biome by defining the range of temperatures, the kind of soil, the amount of light, and the amount of water that are distinctive to that location. These factors create niches for particular species.A biome is a community made up of all the habitats in a given region and climate, whereas a habitat is the place where a group of one type of organism (a population) resides. Different creatures live in many types of biomes.Scientists disagree on the exact number of biomes that exist on earth, therefore we will focus on the six most significant ones: freshwater, marine, desert, forest, grassland, and tundra.
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Design a course of action for the development of a building project in
or highway, that provides for the maintenance of biodiversity in the plan,
Answer:
A, B & C form the vertices of a triangle.
∠ CAB = 90°, ∠ ABC = 73° and AB = 9.4.
Calculate the length of BC rounded to 3 SF
Suppose of sodium bromide is dissolved in of a aqueous solution of silver nitrate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesn't change when the sodium bromide is dissolved in it.
The final molarity of bromide anion in the solution when of sodium bromide is dissolved in of a aqueous solution of silver nitrate is 0.59M
Given the mass of sodium bromide (m) = 15.3g
Volume of aqueous solution of silver nitrate (V) = 250ml = 0.25L
Concentration of solution of silver nitrate (M1) = 0.40M
Let the final molarity of sodium bromide = M2
The volume of solution does not change when when sodium bromide is dissolved in it.
The aqueous solution of silver nitrate contains AgNO₃ ⇆ Ag⁺ +NO₃
Sodium bromide is dissociated as: NaBr ⇄ Na⁺ + Br ⁻
If we know the molecular weight of NaBr, we can directly calculate the ultimate molarity of the bromide ion (Br) from the molarity of NaBr by using the formula:
NaBr has a molecular weight of 102.89 g/mol.
So, M2 = (m/V) x 1mol of NaBr/Molec weight
= (15.3/0.25 )x 1 mol of NaBr/102.89 = 0.59mol/L = 0.59M
Hence the final molarity of bromide anion in the solution is 0.59M.
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complete question: Suppose 15.3g of sodium bromide is dissolved in 250.mL of a 0.40 M aqueous solution of silver nitrate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesn't change when the sodium bromide is dissolved in it.