How many geometric isomers are there for each species?.

This regioselectivity arises due to the steric and electronic effects of the halogen and hydroxyl groups on the reactive intermediate formed during the reaction.

Regiochemistry refers to the specific orientation of chemical reactions that occur at a particular site on a molecule. In the case of halohydrin formation, this reaction involves the addition of a halogen and a hydroxyl group to an unsaturated carbon-carbon bond.

The regiochemistry of this reaction is determined by the relative positions of the halogen and hydroxyl group on the resulting halohydrin product. Generally, the halogen will add to the more substituted carbon atom, while the hydroxyl group will add to the less substituted carbon atom.

This regioselectivity arises due to the steric and electronic effects of the halogen and hydroxyl groups on the reactive intermediate formed during the reaction.

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Answer: protons

Explanation:

The only way to transform one element into another is to change the number of ... protons.

Protons make up the atomic number of an element, which is unique for each element. Therefore, by changing the number of protons, you switch from one atomic number (or one element) to another.

Hope this helps! :)

the number of moles of air in a 4.0 L bottle at 19 °C and 747 mmHg is approximately 0.16 moles.

The ideal gas law equation is expressed mathematically as PV=nRT.

The ideal gas law equation relates the volume, pressure, number of moles, and temperature of an ideal gas. Given the volume of the air (4.0 L), the pressure (747 mmHg), and the temperature (19 °C), the number of moles of air in the 4.0 L bottle can be calculated as follows:

1. Convert the temperature from Celsius to Kelvin:

T(K) = T(°C) + 273.15 = 19 °C + 273.15 = 292.15 K2.

Convert the pressure from mmHg to atm:

747 mmHg × (1 atm / 760 mmHg) = 0.9816 atm3.

Calculate the number of moles of air using the ideal gas law equation:

n = PV/RT = (0.9816 atm × 4.0 L) / (0.08206 L·atm/K·mol × 292.15 K) ≈ 0.16 moles

Therefore, the number of moles of air in a 4.0 L bottle at 19 °C and 747 mmHg is approximately 0.16 moles.

Answer: The correct option is A) 0.5 moles.

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Answer:

need dim points back ma boi

Explanation:

Answer:

I think it is b

Explanation:

but I'm not for sure that the answer is right

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question we have

mass = 15 g

volume = 9 cm³

\(density = \frac{15}{9} = 1.67 \\ \)

We have the final answer as

The object will sink in water since it has a density greater than that of water which is 1 g/cm³

Hope this helps you

The weight of magnesium chloride required to prepare the 200 ml solution that is 5.0 M is approximately 48 grams.

To calculate the weight of magnesium chloride (\(MgCl_{2}\)) required to prepare a 200 ml solution that is 5.0 M, we need to use the formula: Weight (in grams) = Volume (in liters) × Concentration (in moles/liter) × Molecular Weight (in grams/mole)

First, we convert the volume from milliliters to liters by dividing it by 1000: Volume = 200 ml ÷ 1000 = 0.2 L. Next, we multiply the volume, concentration, and molecular weight: Weight = 0.2 L × 5.0 mol/L × 95.3 g/mol = 47.65 grams

Rounding to the nearest whole number, the weight of magnesium chloride required to prepare the 200 ml solution that is 5.0 M is approximately 48 grams.

This calculation ensures that the desired concentration is achieved by accurately measuring the appropriate amount of magnesium chloride, taking into account its molecular weight and the desired volume of the solution.

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Answer:

monkey

Explanation:

cause that's what u r

Liquefaction of gases is the process by which a gas is converted into a liquid. This process is usually accomplished by applying pressure and cooling the gas. It is essential for the production of many industrial products, such as oxygen, nitrogen, argon, and carbon dioxide. It is also used in the production of cryogenic liquids, such as liquid nitrogen and liquid helium, which are used in many applications, such as cooling and food processing.

Process Involved in Liquefaction

The process of liquefaction is often accompanied by an increase in volume, as the molecules become more densely packed when they condense.

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Answer:

3, because H2 ×3 =6, and if you plug in a two in NH3 it would be equal

Answer:

Lose 2 electrons

Explanation:

Remember to record your calculations and provide the final answer in g/mL.

To calculate the average density of a penny made after 1982, you need to know the mass and volume of the penny. The formula for density is density = mass/volume.

First, you'll need to find the mass of a penny made after 1982. You can use a scale to measure the mass in grams.

Next, you'll need to find the volume of the penny. Since a penny is a flat object, you can measure its thickness using a caliper and then calculate the volume using the formula volume = thickness x area.

Once you have both the mass and volume, you can divide the mass by the volume to calculate the density of the penny in g/mL.

Remember to record your calculations and provide the final answer in g/mL.

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To calculate the average density of a penny made after 1982, first find the mass of the penny (approximately 2.5 grams) and then its volume by noting the displacement of water when it is completely submerged. Use the formula for density (density = mass/volume) to calculate the average density of the penny.

Calculating the average density of a penny involves two primary steps. Firstly, establish the mass of the penny, and secondly, determine the volume of the penny.

The known mass of a post-1982 penny is roughly 2.5 grams.

To find the volume of the coin (or any object), we can submerge it completely in a measuring cup of water and observe how much the water level raises. This is displacement and represents the volume of the penny.

We use the formula density = mass/volume to get the average density. So, if for example, the volume of the penny is 0.350 cm³, the density will be density = 2.5g / 0.350 cm³ = 7.14 g/cm³.

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1. 7.53 x 10^23 moles of neon.

2. 6.31 x 10^24 atoms of tungsten is equal to 1 mole of tungsten.

3. In 54 grams of water, there are approximately 4.5 x 10^23 atoms of hydrogen.

4. How many grams are in 12.3 moles of dinitrogen pentoxide?

5. The molar mass of carbon dioxide is 44.01 g/mol.

6. Aluminum oxide has a molar mass of 101.96 g/mol. Therefore, 0.87 moles of aluminum oxide would be 87.17 g.

7. At STP (standard temperature and pressure), 6 L of hydrogen gas contains 0.024 moles of hydrogen.

8. At STP, 10.26 moles of neon will occupy a volume of 24.03 liters.

9.

No, a human is not at risk of a reaction if they were stung with a 0.00056-gram amount of histamine. 0.00056 grams of histamine is only 8.64 x 1010 molecules, which is far less than the threshold of 3.4 x 1015 molecules necessary to cause a reaction.

10. MgS2O6

i gotchu bro here you go

Answer:

slower(less faster)

the particles motion in a liquid state of a substance is faster than the particle motion in substance's solid state.

Particle motion in ice is slower than particle motion in water.

The motion of particles is the random movement of the particles or electrons inside the atoms. These movements happen due to an increase in temperature or heat.

There are three types of matter, solid, gas, and liquid. These matters have different particle movements. Because these matters have different organizations of charged particles within them.

As ice is solid, the particles in solid have compact particle present. These particles are near to each other and do not move. And water is liquid, its particles move randomly. As liquid move and get the shape of the container. Its particles are in motion.

Thus, particle motion in ice is slower than particle motion in water.

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Answer:

The answer to your question is A - electrons

Explanation:

To be honest it's pretty obvious, none of the other things could possibly come with valence behind it so electrons is the only logical answer.

Answer:

A. electrons

Explanation:

The valence electrons on the valence shell which is the last layer of electrons are the same for atoms in the same column.

Answer: PtF6

Explanation:  is one of seventeen known binary hexafluorides.

Answer:

Salt and water is produced.

For example:-

NaOH(base)+HCl(Acid)=>NaCl(salt)+H20(water)

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1129.9 grams of rock salt, NaCl should be added to a 3.78 kg of ice to get the temperature to drop to -19 °C.

The mass of rock salt required to lower the temperature of ice by 19 °C is determined using the Blagden's Law given below:

where;

The van't hoff factor for NaCl, i = 2

Kf for water/ice = 1.86 °C kg/mol

molalityof NaCl = (mass/molar massl) / kg of ice

The mass of NaCl is derived as follows:

molar mass of NaCl = 58.5

mass of ice = 3.78 kg

Let molality of NaCl = X

ΔT = 19 °C

Inputting the values above in the equation of Blagden law:

19 = 2 x 1.86 °C kg/mol x X

X = 5.11 mol/kg

Then, the mass of NaCl will be;

mass of NaCl = 5.11 × 3.78 × 58.5

mass of NaCl = 1129.9 g

Therefore, 1129.9 grams of rock salt, NaCl should be added to a 3.78 kg of ice to get the temperature to drop to -19 °C.

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Answer: c

Explanation:

Answer:

the case of a wave, the speed is the distance traveled by a given point on the wave (such as a crest) in a given interval of time. In equation form, If the crest of an ocean wave moves a distance of 20 meters in 10 seconds, then the speed of the ocean wave is 2.0 m/s.

Explanation:

Answer:

2 Hydrogen atoms and 1 Oxygen atoms makes water

Explanation:

Hope this helps^^

Answer: Its chemical formula H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms,

Explanation: i hopes it helps :)

Considering particles at the subatomic level, carrying out this experiment would help to identify the metals given that: Ca has the smaller atomic radius. In chemical reactions, it would be favorable for it to lose its valence electrons to form ions. This means it has comparatively low ionization energies and would react more readily with the water.

The atomic radius refers to the size of an atom, and in this case, calcium (Ca) has a smaller atomic radius. This is important because metals tend to have larger atomic radii compared to non-metals. By observing the reactivity of metals with water, we can identify them based on their ability to lose electrons and form positive ions. In the case of calcium, it is favorable for it to lose its valence electrons to form Ca\(^{2+}\) ions.

This is because calcium has relatively low ionization energies, which means it requires less energy to remove its valence electrons. As a result, calcium reacts more readily with water, producing calcium hydroxide (Ca(OH)\(_{2}\)) and hydrogen gas (H\(_{2}\)).

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Explanation:

more saturated than solution one

Answer:

Francium is the answer

1. Kc value:

C. remains the same.

2. Qc value:

C. remain the same.

3. The reaction is:

B.  Qc < Kc, the reaction will move in the forward direction.

4. The concentration of N2 is:

A. increase.

Whilst the awareness of all of the reactants increases extra molecules or ions interact to form new compounds and the fee of reaction increases. while the attention of a reactant decreases, there are fewer of that molecules or ions present, and the rate of reaction decreases. If the concentration of reactants is multiplied, there are more reactant particles moving collectively.

Calculation:-

Removing product will shift the reaction in the direction of product as per Le chatelier Principle

So, Equilibrium moves to product side

Since temperature is not changing Kc would not change.

B)Since we are removing product and Qc = [product]/[recatant]

Value of Qc will decrease and hence Qc will be less than Kc

C)Since Qc < Kc, the reaction will move in forward direction.

D)O2 is product here and reaction is moving towards product.

So, concentration of O2 would increase.

There could be more collisions and so the reaction charge is multiplied. The higher the awareness of reactants, the faster the fee of a response will be. awareness can be improved by means of dissolving an extra solute in a given extent of a solution this will increase the mass of the solute. awareness may be accelerated by means of permitting some of the solvents to evaporate this decreases the extent of the solution.

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When propanal reacts with methylmagnesium bromide (CH3MgBr) followed by the addition of dilute acid, the major organic product formed is 3-hydroxypropan-1-ol (also known as 1-propanol). This reaction is an example of an addition reaction.

For 2-pentanone, the major organic product formed is 2-pentanol. The methyl group from CH3MgBr adds to the carbonyl carbon of 2-pentanone, resulting in the formation of an intermediate. The intermediate is then protonated by the dilute acid, leading to the formation of the alcohol.

In both cases, the addition of CH3MgBr followed by the addition of dilute acid results in the conversion of the carbonyl group into a hydroxyl group, forming alcohols as the major organic products.

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The specific heat of calcium carbonate for 5.04g sample that absorbs 40 J of heat and rises in temperature from
24.5 °C to 34.1 °C is  0.83 J/(g·°C)

To determine the specific heat of calcium carbonate (CaCO3), we can use the following formula:
Specific Heat (c) = Heat absorbed (Q) / (mass (m) × change in temperature (ΔT))
Given data:
Heat absorbed (Q) = 40 J
Mass (m) = 5.04 g
Initial temperature = 24.5 °C
Final temperature = 34.1 °C
First, we need to find the change in temperature (ΔT):
ΔT = Final temperature - Initial temperature = \(34.1^\circ C- 24.5^\circ C = 9.6 ^\circ C\)
Now, we can calculate the specific heat (c):
c = \(40 J / (5.04 g * 9.6^\circ C) =0.83J/ (g^\circ C)\)

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