in what type of molecule are london dispersion forces most important?

Answer:

They are called the reactants. To the right of the arrow we have the 'after' situation. This side represents the substances that we have after the reaction has taken place. They are called the products.

Answer:

The answer is A I think sorry if I'm wrong

Answer:

hex-3-ene

remember the least number rule and since the double bond lies at 3rd C-atom from either ways, the compound is named hex (six carbon atoms) -3(position of double bond)-ene (primary suffix for unsaturated organic compound where any two carbons have double bond). hex-3-ene.

if you have any doubt, please feel free to ask :-))

The scientific method is used by biologists and other scientists to pose inquiries about the natural world.

The first step in the scientific method is an observation, which prompts a question from the scientist. They then develop a theory—a verifiable explanation—that responds to the query.

A controlled experiment is a scientific test that is carried out under predetermined circumstances, meaning that only one (or a small number of) variables are altered at a time while all other variables are held constant. The element that differs between the experimental and control groups—in this case, the volume of water—is referred to as the independent variable. The response tested in an experiment to establish if a treatment had an impact is known as the dependent variable.

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The overall enthalpy of the given chemical equations is obtained by summing the two given enthalpies according Hess's law which  is 99.5 kJ/mole.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

The overall enthalpy for the reactions is found out by adding the given enthalpies of the 2 reactions which is ΔH₁+ΔH₂= -241.8+142.3=99.5 kJ/mole.

Thus, the overall enthalpy of reaction for the equation 3H₂ (g) + O₃ (g) ⇒ 3H₂O (g) is 99.5 kJ/mole.

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Molarity of the solution is 0.071

aqueous solution of a compound with a molar mass of 34.02 g/mol is 21.5% by mass and has a density of 1.13 g/cm3

The equation is as follows: Molarity = (% by weight 10 d)/GMM. Density (d) and gram molecular mass (GMM) are used here.

Derive the formula : Molarity = (% by weight × 10 × d )/ GMM

(21.5% *10 *1.13 ) /34.02  = 0.071.

Molarity of the solution is 0.071

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Answer:

A chemical bond formed when two atoms share two pairs of electrons is a double bond; it is best described as a covalent bond.

Explanation:

A chemical bond in which two pairs of electrons are shared has to be defined as covalent since ionic bonds don't involve electron sharing. They consist only of electrostatic attraction between ions.

Answer:

3 × 10¯¹⁰

Explanation:

9×10² ÷ 3×10¹²

The above expression can be simplified as follow:

9×10² ÷ 3×10¹²

Recall:

9 = 3²

9×10² ÷ 3×10¹² = 3²×10² ÷ 3×10¹²

Recall:

a^m ÷ a^n = a^(m – n)

3²×10² ÷ 3×10¹² = 3^(2 – 1) × 10^(2 – 12)

= 3¹ × 10¯¹⁰

Recall:

a¹ = a

3¹ × 10¯¹⁰ = 3 × 10¯¹⁰

Answer:

6 hours

Explanation:

pls brailiest

Answer:

Rb2S

Explanation:

Answer:

a

Explanation:

Answer:

Option D

Explanation:

A and B both make sense to some level.

For option A,trees can only move while bacteria and humans can both move and locomote so there's that similarity

For option B,humans and plants are not micro organisms but bacteria are so there's that similarity

Option C is just not true

Option D is the right answer thus both humans and animals are eukaryotes

Answer:

911

Explanation:

cause so you can get help

The mass of the precipitate, BaSO₄ obtained from the given reaction is 18.64 grams

Mole = Molarity x Volume

Mole of Na₂SO₄ = 0.3 × 0.3

Mole of Na₂SO₄ = 0.09 mole

Mole = Molarity x Volume

Mole of BaCl₂ = 0.4 × 0.2

Mole of BaCl₂ = 0.08 mole

Balanced equation

Na₂SO₄(aq) + BaCl₂(aq) —> BaSO₄(s) + 2NaCl(aq)

From the balanced equation above,

1 mole of BaCl₂ reacted with 1 mole of Na₂SO₄.

Therefore,

0.08 mole of BaCl₂ will also react with 0.08 mole of Na₂SO₄.

From the above illustration, we can see that only 0.08 mole of Na₂SO₄ out of 0.09 mole given is neede to react completely with 0.08 mole of BaCl₂.

Therefore, BaCl₂ is the limiting reactant

Balanced equation

Na₂SO₄(aq) + BaCl₂(aq) —> BaSO₄(s) + 2NaCl(aq)

From the balanced equation above,

1 mole of BaCl₂ reacted to produce 1 mole of BaSO₄.

Therefore,

0.08 mole of BaCl₂ will also react to produce 0.08 mole of BaSO₄.

The mass of BaSO₄ can be obtained as follow

Mass = mole × molar mass

Mass of BaSO₄ = 0.08 × 233

Mass of BaSO₄ = 18.64 g

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Answer:

yes probably

Explanation:

the decrease would affect the plants growing in the ground cause there is no access water they can get

Answer: D. a mixture

Explanation: When you mix different types of nuts or snacks together including raisins, hazelnuts, almonds, and peanuts to make some kind of trail mix, then you are creating a mixture, specifically a heterogeneous mixture.

A small nucleus with less than 20 protons will generally have a neutron-to-proton ratio (n/p) close to 1:1, meaning approximately an equal number of neutrons and protons.

The neutron-to-proton ratio in a nucleus is influenced by various factors, including the stability of the nucleus and the balance between the strong nuclear force and electrostatic repulsion. In smaller nuclei with fewer than 20 protons, the n/p ratio tends to be close to 1:1.

The strong nuclear force, which binds protons and neutrons together, plays a crucial role in stabilizing the nucleus. As the number of protons increases, the electrostatic repulsion between the positively charged protons also increases. To counterbalance this repulsion and maintain stability, additional neutrons are needed. In smaller nuclei, the number of protons is relatively low, and a nearly equal number of neutrons can effectively stabilize the nucleus.

It's important to note that this is a general trend and not a strict rule. There can be variations in the neutron-to-proton ratio among different elements and isotopes, even within the category of small nuclei. The specific number of neutrons relative to protons may vary depending on the specific element or isotope under consideration.

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Explanation:

cooked rice

nutrient

carbohydrate.

Boiler eggs

nutrient

Protein.

Fractional distillation is more efficient than simple distillation in separating two miscible liquids because it utilizes a fractionating column, which provides multiple stages for vapor-liquid contact.

Fractional distillation is a method used to separate two or more miscible liquids based on their boiling points. It involves the use of a fractionating column, which is a tall column packed with materials such as glass beads or metal plates. The column provides numerous stages where vapor and liquid can come into contact.

During fractional distillation, the mixture is heated, and the vapor rises through the fractionating column. As the vapor ascends, it cools down, and when it reaches a stage with a temperature below its boiling point, it condenses and returns to the liquid phase. This process is repeated as the liquid continues to evaporate and condense multiple times while moving up the column.

The fractionating column allows for efficient separation because it provides a large surface area for vapor-liquid contact. The repeated evaporation and condensation cycles enhance the separation of the different components in the mixture. The compounds with lower boiling points will tend to condense and collect at the higher stages of the column, while those with higher boiling points will condense and collect at the lower stages.

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68ga is a positron-emitting radioisotope with a half-life of 68 min.it will take 136 minutes for a sample of 68Ga to decay to 25% of its original mass.

The half-life of 68Ga is 68 minutes, which means that after 68 minutes, half of the original sample will have decayed. To find out how long it will take for the sample to decay to 25% of its original mass, we can use the following equation:
N = N0 (1/2)^(t/t1/2)
where N is the final amount of the radioisotope, N0 is the initial amount, t is the time elapsed, and t1/2 is the half-life.
We want to find t when N = 0.25 N0, so we can plug in the values we know:
0.25 N0 = N0 (1/2)^(t/68)
Simplifying this equation, we get:
(1/2)^(t/68) = 0.25
Taking the logarithm of both sides, we get:
t/68 = log(0.25) / log(1/2)
t/68 = 2
t = 136 minutes
Therefore, it will take 136 minutes for a sample of 68Ga to decay to 25% of its original mass.

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When 525mL of 1.50M NaCl is added to a beaker containing 378mL of 2.22M AgNO3, resulting in the formation of AgCl precipitate and the limiting reactant is NaNO₃. Hence, the correct option is D.

Generally, limiting reagents are defined as the substances that are completely consumed in the completion of a chemical reaction. Basically they are often also referred to as limiting agents or limiting reactants. Generally, according to the stoichiometry of chemical reactions, a fixed amount of reactants is required for the completion of the reaction.

The balanced chemical reaction is given as,

NaCl(aq) + AgNO₃(aq) ⟶ NaNO₃(aq) + AgCl (s)

Hence, sodium nitrate is produced in more amount so it is the limiting reagent. Hence, the correct option is D.

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The mass of sodium hydroxide produced is 39.58g.

Percent yield is the percent ratio of actual yield to the theoretical yield. It is calculated to be the experimental yield divided by theoretical yield multiplied by 100%. If the actual and theoretical yield ​are the same, the percent yield is 100%

In chemistry, yield is a measure of the quantity of moles of a product formed in relation to the reactant consumed, obtained in a chemical reaction, usually expressed as a percentage.

Given,

moles of sodium oxide = 0.532 moles

From the reaction,

Na₂O + H₂O = 2NaOH

1 mole of sodium oxide gives 2 moles of NaOH

so, 0.532 moles will give 1.064 moles of NaOH

Mass of NaOH = 1.064 × 40 = 42.56g

Theoretical yield = 42.56g

Percentage yield = 93%

Actual yield = (93 × 42.56) ÷ 100

= 39.58g

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for the left column:

for the right column:

The opposite electrons must have an opposite spin direction to occupy the same orbital. This is important in assigning Identical electron configurations, as it allows you to determine how and where the electrons should be assigned.

The electron configuration is described as the distribution of electrons of an atom or molecule in atomic or molecular orbitals.

In this, we consider the energy ordering of orbitals, the spin direction of electrons, and the concept of identical electron configurations.

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Answer:

I think it is on amplify because I just think it is

1.52 tanks of gas will be used to drive 1600 km.

A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon).

A gallon is a unit of volume in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters).

1 mpg = 0.425143707 km/l; to convert miles per gallon to kilometers per liter .

mileage = 23.38 km/l

volume = 1600 km ÷ 23.38 km/l

volume = 68.43 liters; the amount of gasoline needed the trip

tanks = 68.43 l ÷ 45 l

tanks = 1.52

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The ability of microbes to utilize N2 as a nitrogen source is called Nitrogen fixation.

Nitrogen fixation refers to the process by which certain microorganisms convert inert atmospheric nitrogen (N2) into biologically useful forms of nitrogen. Nitrogen is a crucial component of amino acids, which are building blocks of proteins and nucleic acids (DNA and RNA) essential for life.Nitrogen fixation is classified into two categories: atmospheric and industrial. Nitrogen fixation by industrial processes includes Haber-Bosch and Ostwald processes while biological nitrogen fixation is a natural process. Biological nitrogen fixation is carried out by some free-living soil bacteria, symbiotic bacteria present in the root nodules of leguminous plants, and some other groups of bacteria that live in symbiotic associations with various types of plants.

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Answer:

pH = 3.69

Explanation:

HCl is a strong acid. It will disscociates completely into dissoluted ions such that,

\([H^+]=2\times 10^{-4}\ M\)

The formula for pH is given by :

\(pH=-log[H^+]\\\\pH=-log(2\times 10^{-4})\\\\pH=3.69\)

So, the pH of the solution is 3.69.

The answer to your question is 4.

Answer: Handwashing. It is estimated that washing hands with soap and water could reduce diarrheal disease-associated deaths by up to 50% 1. Researchers in London estimate that if everyone routinely washed their hands, a million deaths a year could be prevented 2.

Explanation:

The differences between grasses and legumes are,

The advantage and disadvantage of grasses are given below.

Advantage:

Grasses helps to keep air clean, trap carbon dioxide , reduce erosion from storm water runoff , improve soil , decreases noise pollution and reduce temperature.

Disadvantage:

The advantage and disadvantage of legumes are given below.

Advantage:

Disadvantage:

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Explanation:

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

When the temperature of a substance is increased, i.e., if you double the Kelvin temperature of a substance, you double the average kinetic energy of its molecules. When the average kinetic energy of the molecules goes up (a rise in temperature), the average speed of the molecules increases.

Based on the diagram, the statement explains how energy is conserved during this chemical reaction is the potential energy lost by the reaction suystem (B) is gained by the surroundings.

Those reactions in which eneregy is released during the whole process, because energy of product is less than the energy of reactants.

In the given diagram it is given that energy of the reactants are more as compare to the products, so the reaction is exothermic in reaction means heat is released during this reaction. This released energy will absorb by the surrounding of the reaction system to maintain the law of conservation of energy.

Hence, option (D) is correct.

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The statement that explains how energy is conserved during this chemical reaction is the potential energy lost by the reaction system (B) is gained by the surroundings.

The law of conservation of energy says that the energy of an isolated system never changed.

The energy neither be created nor destroyed.

Thus, the correct option is D. the potential energy lost by the reaction system (B) is gained by the surroundings.

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