What would be the stereochemical classification of the product of this reaction?CH CH=CHCH; + HBr ->A. R-enantiomerB. S-enantiomerC. meso compoundD. racemate

Answer:

Because it was based on mystical belief instead of the scientific method (which had not been codified for most of alchemy's existence). It is completely wrong, even if it stumbled on techniques which are still useful.

Explanation:

To determine the number of moles of oxygen gas (O2) needed to produce 108 g of water (H2O) in the presence of excess hydrogen gas (H2), we need to consider the balanced chemical equation for the reaction.

The balanced chemical equation for the reaction between hydrogen gas and oxygen gas to form water is:

2H2 + O2 -> 2H2O

From the equation, we can see that 1 mole of O2 reacts with 2 moles of H2 to produce 2 moles of H2O.

First, we need to determine the number of moles of water (H2O) in 108 g. The molar mass of water is 18.015 g/mol. Therefore, the number of moles of water is calculated as:

moles of H2O = mass of H2O / molar mass of H2O

= 108 g / 18.015 g/mol

= 6 moles

Since the stoichiometric ratio between O2 and H2O is 1:2, we know that for every 2 moles of H2O, we need 1 mole of O2.

Thus, to produce 6 moles of H2O, we would need 6/2 = 3 moles of O2.

To know more about moles of oxygen gas click this link-

https://brainly.com/question/13457556

#SPJ11

Answer:

As mass increases the gravitational force increases

Explanation:

Things with mass gain a gravitational force, The bigger they are the more force, for example: the sun is the biggest so it pull us

2. Research conducted by Mosa's collaborators, two camps, and the same schedule, is an essential component of the scientific method.

The "scientific method" is all about being skeptical about oneself. I can distinguish between a scientific and a non-scientist in the following manner: A non-scientist is susceptible to deception and is particularly easy to trick. Scientific research is research that is carried out by a researcher with the intention of advancing science by the methodical gathering, analysis, and evaluation of data—and that, too, in a planned manner. The scientific considerations cover issues with endpoint selection, the one-size-fits-all standard, and the necessity for a more flexible methodology, such as assessing the degree of similarity (i.e., answering the question, "How similar is similar? (Examples include answering the question, "How similar is similar?" and reviewing study plans that are effective for determining...

Learn more about Mosa's collaborators here:

https://brainly.com/question/22249350

#SPJ4

Answer:

Nitrogen fixation is the process of converting nitrogen to a usable form.

Answer:

The best soil for most plants to ensure optimum growth is a rich, sandy loam.

Cl\(_2\) is classified as a nonelectrolyte. Therefore, the correct option is option B among all the given options.

A material that contains ions and is electrically conducting due to the mobility of those ions but does not conduct electrons is called an electrolyte. This covers the majority of soluble salts and acids.

Bases that have been dissolved inside a polar solvent, such water. The material splits into cations as well as anion during dissolution. Cl\(_2\) is classified as a nonelectrolyte.

Therefore, the correct option is option B.

To know more about electrolyte, here:

https://brainly.com/question/28699046

#SPJ1

Answer:

82.24% percent composition of N and 17.76% percent composition of H .

Explanation:

The percentage by mass of Fe²⁺ in the tablet is 3.4%

The question is asking to calculate the percentage by mass of Fe²⁺ in the tablet. To solve this question, use the following formula:

mass of Fe²⁺ = (volume of titrant x molarity of titrant x valency of titrant) ÷ (volume of solution x 1000)

We are given the following information:

Using the formula above, we can calculate the mass of Fe²⁺ as follows:

mass of Fe²⁺ = (32.5 cm³ x 0.00160 moldm⁻³ x 6+) ÷ (250 cm³ x 1000)

mass of Fe²⁺ = 0.0320 g

To calculate the percentage by mass of Fe²⁺ in the tablet, divide the mass of Fe²⁺ (0.0320 g) by the tablet weight (0.940 g) and multiply by 100:

Percentage by mass of Fe²⁺ = (0.0320 g ÷ 0.940 g) x 100

Percentage by mass of Fe²⁺ = 3.4%

Therefore, the percentage by mass of Fe²⁺ in the tablet is 3.4%.

To know more about percentage by mass click on below link:

https://brainly.com/question/16885872#

#SPJ11

The amount of O2 that will dissolve in 1.5 L of H2O that is in contact with pure O2 at 1.47 atm is 0.253 g Given, Henry's law constant (KH) for O2 in water at 20°C is 1.28 × 10-3 mol/L atm.

Pure O2 is in contact with 1.5 L of H2O at 1.47 atm.To find the mass of O2 dissolved In1.5 L of H2O, we use the Henry's law constant, which states that the concentration of a gas dissolved in a liquid is directly proportional to the pressure of the gas over the liquid.We first calculate the number of moles of O2 in 1.5 L of water.Using the ideal gas law, the number of moles of O2 present in 1.5 L of H2O at 1.47 atm can be calculated as follows:PV = nRT(1.47 atm)(1.5 L) = n(0.08206 L.atm/K.mol)(293 K)n = 0.0879 mol

We can then use Henry's law to calculate the concentration of O2 in water using the given KH value as follows KH = (mol/L) / (atm)(mol/L) = KH × (atm) = 1.28 × 10-3 mol/L atm × 1.47 atm = 1.88 × 10-3 mol/LThus, the concentration of O2 in water is 1.88 × 10-3 mol/L, and the mass of O2 dissolved in 1.5 L of water can be calculated as follows:mass = (conc. × vol.) × molar massmass = (1.88 × 10-3 mol/L) × (1.5 L) × (32 g/mol)mass = 0.091 gTherefore, the mass of O2 that will dissolve in 1.5 L of H2O that is in contact with pure O2 at 1.47 atm is 0.091 g.

To know more about dissolve Visit;

https://brainly.com/question/21849811

#SPJ11

Answer: C. Na2B4O7•10H2O

Explanation:

Hope this helps :)

The formula is tetrasodium borate-Na2B4O7.10H2O

Given- 0.0132 mol Na2B4O7 and 0.1311 mol H2O

Using the molar mass of the anhydrous Na2B4O7 and its mass percentage, we can calculate the molar mass of the hydrate (if we look at it as 100% of the mass) by stoichiometry.

Molar mass of Na = (22.990 g/mol)

Molar mass of B = (10.811 g/mol)

Molar mass of O = (15.999 g/mol)

Molar mass of Na2B4O7= 2⋅22.990 g/mol +4⋅10.811 g/mol +7⋅15.999 g/mol = 201.217 g/mol

201.217g/mol : 52.8%=x g/mol : 100%

​x g/mol = 201.217 g/mol⋅100%÷52.8 %

x g/mol= 381.093 g/mol

In 381.093 g of hydrate, we have 201.217 g of anhydrous Na2B4O7 , the rest of the mass is water.

381.093g−201.217g= 179.876 g of water

Molar mass of H = 1.008 g/mol

Molar mass of O = 15.999 g/mol

Molar mass of  H2O= 1.008 g/mol+ 15.999g/mol  = 18.015 g/mol

179.876g ÷18.015 = 9.98= 10 moles of water per mole of hydrate.

​

​

​

​

Answer:

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.

Explanation:

I hope it helps! Please mark my answer as a bräinliest.

Thank You!

Answer:

Q = 319.49 J

Explanation:

Given that,

Mass, m = 16.6 g

Initial temperature, \(T_i=40.2^{\circ} C\)

We need to find the heat needed to warm the water to 44.8 °C. The formula that is used to find the heat required is given by :

\(Q=mc\Delta T\\\\Q=mc(T_f-T_i)\\\\Q=16.6\ g\times 4.184\ J/g^{\circ} C\times (44.8-40.2)^{\circ} C\\\\Q=319.49\ J\)

So, 319.49 J of heat is needed to warm water.

Ligand-gated ion channels allow the following ions to pass through the plasma membrane: Na⁺, K⁺, Ca⁺⁺, and Cl⁻.

Ligand-gated ion channels are a type of transmembrane protein that can be found in the plasma membrane of cells. These channels are activated by the binding of a specific ligand, which leads to the opening of the channel and the movement of ions across the membrane.

In the case of ligand-gated ion channels, the ions that can pass through the channel depend on the specific channel and the ligand that is binding to it. However, in general, these channels can allow for the passage of a variety of different ions, including Na⁺, K⁺, Ca⁺⁺, and Cl⁻.

Na+ and K+ are both cations or positively charged ions, that are important for a variety of cellular functions. Na⁺ is involved in the regulation of the body's fluid balance and the transmission of nerve impulses, while K⁺ plays a role in maintaining the electrical potential across the membrane of cells.

Ca⁺⁺ is another cation that is important for a variety of cellular functions, including muscle contraction and neurotransmitter release.

Cl⁻ is an anion, or negatively charged ion, that is involved in the regulation of the body's fluid balance and the transmission of nerve impulses.

Overall, ligand-gated ion channels can allow for the passage of a variety of different ions, including cations and anions, depending on the specific channel and ligand involved.

To know more about Ligand-gated ion channels, refer here:

https://brainly.com/question/31084685#

#SPJ11

1) The dream of Mendeleev concerned the arrangement of the elements by mass

2) Periodicity is the changing properties of the elements

3)

Antoine Lavoisier - Arranged the elements by their properties

Johann Döbereiner - Arranged the elements into triads

John Newlands - Arranges the elements according to the order of increasing atomic mass

We define the periodic table as the arrangement of the elements in order of increasing atomic numbers. We know can see that several attempts have been made at the systematization of the elements and the approaches to the problem have taken different dimensions. In a dream, Mendeleev saw the elements line up in order of atomic masses and there was a visible pattern.

The term periodicity has to do with the regular repeating property of the elements and this can be seen when we follow the properties of the elements as they change down the group and across the period.

Learn more about periodic table:https://brainly.com/question/11155928

#SPJ1

The NaOH solution has a 159.75 mL capacity.1.500 M H3PO4 solution in 25.00 mL.

How much NaOH was used for the titration?

In a titration of the two chemicals, 26.60 mL of sulfuric acid is neutralized by 32.20 mL of sodium hydroxide that has a concentration of 0.250 mM.

In a titration of the two chemicals, 26.60 mL of sulfuric acid is neutralized by 32.20 mL of sodium hydroxide that has a concentration of 0.250 mM.

The percent volume/volume of a solution can be calculated using the following formula, which bases its results on the milliliter as the unit of volume (v):

As mL of solute per 100 mL of solution, % v/v is expressed.

X% = 5.0 mL HCl/100 mL of solution is a good illustration.

X/100 = 5.0/100. 100X = 500. \sX = 5.0%%

To learn more about volume refer to:

brainly.com/question/12410983

#SPJ1

Yes, the carbons in glucose are ultimately used to make additional Krebs cycle intermediates.

Glucose is one of the primary sources of energy that our body uses to fuel daily activities. Carbons in glucose are ultimately used to make additional Krebs cycle intermediates.

The Krebs cycle or Citric acid cycle (CAC) is a part of cellular respiration where it breaks down the molecules of glucose and other fuel to produce energy. It is an important metabolic pathway that is present in all living cells.

The carbon in glucose undergoes the breakdown process in the Krebs cycle which produces ATP, carbon dioxide, and water. The citric acid cycle is responsible for completing the breakdown of glucose.

The carbons in glucose ultimately produce two CO₂ molecules, which enter into the Krebs cycle and converted to Acetyl CoA and water in the mitochondria to produce ATP. The two CO₂ molecules come from the two-carbon acetyl CoA molecules that enter the Krebs cycle.

So, from the above explanation, we can conclude that the carbons in glucose are ultimately used to make additional Krebs cycle intermediates. Hence, glucose is one of the important sources that can be used to generate the energy required by the body.

Learn more about the Glucose from the given link-

https://brainly.com/question/454703

#SPJ11

Answer:

Kinetic energy is energy of motion, while temperature is a measure of that energy. I guess

The best compares kinetic energy and temperature is given below.

Kinetic energy is energy of motion, while temperature is a measure of that energy.

The energy posses due to motion of the partials or substance is called Kinetic energy. The relation between Kinetic energy and temperature is given as.

K.E = 3RT/2NA

Where, K.E = Average Kinetic energy

R = Gas constant

T = Temperature

NA = Avogadro's number

To learn more about Kinetic energy here.

https://brainly.com/question/12669551

#SPJ3

The correct net ionic equation for the neutralization reaction between hydrofluoric acid (HF) and sodium hydroxide (NaOH) in aqueous solution is C) H+(aq) + OH−(aq) → H2O(l).

In a neutralization reaction, an acid reacts with a base to form water and a salt.

The acid, hydrofluoric acid, donates a proton (H+), and the base, sodium hydroxide, donates a hydroxide ion (OH−).

When these ions combine, they form water (H2O).

The net ionic equation only includes the species that are involved in the reaction, and it omits the spectator ions that do not participate, like the sodium (Na+) and fluoride (F−) ions in this case.

Thus, the net ionic equation focuses on the formation of water from the reaction between the H+ and OH− ions, as shown below.

H+(aq) + OH−(aq) → H2O(l)

To know something about the neutralization reaction, click below.

https://brainly.com/question/27745033

#SPJ11

Most of the helium in the universe formed during the Big Bang nucleosynthesis.

During the early stages of the universe, a process known as Big Bang nucleosynthesis occurred. This process happened around 10 to 20 seconds after the Big Bang when the universe was extremely hot and dense. At this time, the conditions were suitable for the fusion of protons and neutrons to form light atomic nuclei.

During Big Bang nucleosynthesis, the abundance of light elements, including helium-4 (⁴He), increased significantly. About 25% of the total baryonic matter in the universe was converted into helium-4 during this process. The formation of helium-4 involved the fusion of two protons, two neutrons, and the release of energy.

The abundance of helium-4 is considered a key prediction of the Big Bang theory, and observations of the cosmic microwave background radiation and the elemental composition of the universe support this prediction. Hence, most of the helium in the universe, specifically helium-4, formed during the Big Bang nucleosynthesis.

learn more about Big Bang nucleosynthesis here:

https://brainly.com/question/31316066

#SPJ11

Answer:

It’s caused by a disturbance.

It requires a medium to travel.

Explanation:

A wave is an unsettling influence that sends energy starting with one point then onto the next. It does no essentially convey the particles or matter of the medium.  

Waves typically conveys energy. It is this energy they use in making aggravations.  

Not all waves conveys matter; a genuine model is electromagnetic waves. Additionally, electromagnetic waves don't need a mode for proliferation.

Answer: The only answer that is NOT true is that waves carry matter.

Explanation:

Waves are caused by a disturbance, require a medium to travel (by definition) and carry energy.

If you're talking about electromagnetic waves tho, those do not require a medium. Waves in general DO require a medium

A law summarizes a set of observations about an experiment.

Chemical law: Most of the properties and the atomic structure of the elements vary periodically when the elements are arranged in the order of their atomic numbers.

A sound explanation for observations is referred to as a theory. A summary of the relationship between variables constitutes a scientific law. A controlled method of testing a hypothesis is through an experiment.

The fundamental chemistry laws in chemistry are considered to be the following three: the mass conservation principle. the principle of proportional equality. A multiple proportions law.

To know more about chemical law visit:

https://brainly.com/question/29640690

#SPJ1

Increasing one charged particle by 16 will lead to increasing the electrical force between two charged particles by a factor of 16.

This is referred the attractive or repulsive interaction between any two charged bodies present.

F= kq1q2/r²

F1/F2= kq1q2/r² / 16kq1q2/r²

F1/F2 = 1/16

F2 = 16F1

This is therefore how to increase the electrical force between two charged particles by a factor of 16.

Read more about Electrical force here https://brainly.com/question/1498868

#SPJ1

Answer:

Its right!

Explanation:

A yellow-gold sphere has a mass of 15.2 g when passes in the orange liquid with volume 43 mL

Density= mass/volume

Density = 15.2 g/ 43mL

Density = 0.35 g/mL

Question is to find density

The moles would be 12 moles, 4 moles and 11.34 moles

When hydrogen gas (H2) reacts with oxygen gas (O2) to produce water (H2O), the balanced chemical equation is:

2H2 + O2 -> 2H2O

So,

For every 6 moles of H2, 12 moles of H2O will be produced

For every 2 moles of H2, 4 moles of H2O will be produced

For every 5.67 moles of H2, 11.34 moles of H2O will be produced.

Read more on the moles here:https://brainly.com/question/15356425

#SPJ1

Answer:

A

Explanation:

Water is a polar molecule due to its bent molecular geometry and the electronegativity difference between oxygen and hydrogen.

The oxygen atom in water is more electronegative than hydrogen, resulting in an uneven distribution of charge within the molecule.Since the majority of hydrocarbon bonds are nonpolar, they do not readily interact with polar substances like water. The nonpolar nature of hydrocarbons leads to a lack of significant electrostatic interactions between the hydrocarbon molecules and water molecules. As a result, hydrocarbons are generally insoluble in water.It is important to note that option c) they exhibit considerable molecular complexity and diversity, and option d) they are less dense than water, are not accurate explanations for the insolubility of hydrocarbons in water. The solubility of hydrocarbons in water primarily depends on the polarity of the hydrocarbon molecules and their ability to interact with water molecules.

To know more about molecules visit :

https://brainly.com/question/32298217

#SPJ11

Answer:

archaea

Explanation:

animals example your dog her name is pandA

Answer:

animals

fungi

protists