Determine whether each of the molecules below is polar or nonpolar. Tetrahedral C C l 4 CClX4 Nonpolar Tetrahedral C H 3 O H CHX3OH Polar Trigonal pyramidal N H 3 NHX3 Nonpolar Linear C S 2 CSX2 Nonpolar

Answer:

may involve a change in total mass

involve very high-energy changes

involve changes in nuclides when decay occurs

Explanation:

A nuclear reaction is different from a typical chemical reaction. The reaction occurs within the nucleus and involved nuclear materials.

The field of chemistry that explains why bromine trifluoride reacts differently than water vapor during a reaction is called chemical kinetics.

What is Energy?

Energy is a fundamental concept in physics, often defined as the ability to do work. It can take many different forms, including thermal energy, kinetic energy, potential energy, electromagnetic radiation, and chemical energy, among others. Energy can be transferred from one system to another, and it can also be converted from one form to another. The SI unit of energy is the joule (J), although other units such as the calorie and the electronvolt are also used in specific contexts.

The field of chemistry that explains why bromine trifluoride reacts differently than water vapor during a reaction is called reaction kinetics. Reaction kinetics is the study of how fast chemical reactions occur and what factors affect the reaction rate. It takes into account factors such as the nature of the reactants, concentration, temperature, surface area, and the presence of a catalyst or inhibitor.

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If 60 grams of the substance are added to 100 g of water, the solution can be categorized as supersaturated.

The graph shows the number of grams that can be dissolved in 100 grams of water at different temperatures. In general, solubility increases with temperature.

According to the graph, at a temperature of 30°C, it is possible to dissolve a total of 48 to 49 grams of \(KNO_{3}\). This information implies that if we add 60 grams at this temperature not all the substance would be dissolved, and therefore the solution would be supersaturated.

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Answer:

True

Explanation:

Answer:No, the Cell Membrane does I'm pretty sure

Explanation:

Answer:

1.9472857e+56

Explanation: Ask Google

Answer:

If Mountain lions are removed from a habitat/ecosystem, their prey will overpopulate, which may lead to extinctions on the pray of the secondary consumers. ex. A mountain lion would eat rabbits who eat berries, if there are no mountain lions to kill the rabbits, then the berries may be scarce

Explanation:

bc i know everthing

Answer:

Explanation:

Therefore, the pH of the HCl solution is 5.

Answer:

cell wall

Explanation:

plant cell have cell wall and can go through the process of plasmolysis.

they also contain stoma

animal cell are smaller

Answer:

Deductive reasoning  (Brainliest please)

Explanation:Deductive reasoning begins with a general principle and a prediction based on this principle; the prediction is then tested, and a specific conclusion can then be drawn. The first step in the process of inductive reasoning is making specific observations.

The balanced molecular equation for the reaction between sodium hydroxide (NaOH) and aluminum chloride (\(AlCl_3\)) in aqueous solution can be written as follows: 2NaOH(aq) + 3\(AlCl_3\)(aq) → 3NaCl(aq) + \(Al(OH)_3\)(s)

In this reaction, sodium hydroxide (NaOH) reacts with aluminum chloride (\(AlCl_3\)) to form sodium chloride (NaCl) and aluminum hydroxide (\(Al(OH)_3\)). The coefficients in the balanced equation indicate the stoichiometric ratio between the reactants and products.

The physical states of the substances are indicated by the symbols (aq) for aqueous solutions and (s) for the solid precipitate.

The reaction is a double-displacement reaction, also known as a precipitation reaction. Double-displacement reactions involve the exchange of ions between two compounds, resulting in the formation of a precipitate.

In this case, sodium hydroxide and aluminum chloride react to form sodium chloride and aluminum hydroxide, with aluminum hydroxide being the white solid precipitate.

It's worth noting that the actual reaction might involve hydrated forms of the compounds, such as NaOH·x\(H_2O\) and \(AlCl_3\)·y\(H_2O\). However, for simplicity, these hydrated forms are not included in the balanced equation.

Overall, the balanced equation represents the chemical reaction between sodium hydroxide and aluminum chloride, showing the reactants, products, and their stoichiometric ratios.

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Answer:

324.46 amu

3.33 × 10⁻³ mol

Explanation:

(a) Calculate the molecular mass of quinine, C₂₀H₂₄N₂O₂

We will add the mass of each atom times the number of each atom in a molecule.

20 × C + 24 × H + 2 × N + 2 × O

20 × 12.01 amu + 24 × 1.01 amu + 2 × 14.01 amu + 2 × 16.00 amu

324.46 amu

(b) Calculate the number of moles of quinine in 1.08 g of quinine

The molar mass of quinine is 324.46 g/mol.

1.08 g × (1 mol/324.46 g) = 3.33 × 10⁻³ mol

The formula should be MNO₃ because the valency of the metal and the nitrate ion both is 1 and thus the formula will be MN0₃.

Cold water causes a strong reaction between all alkali metals. Each time a reaction occurs, hydrogen gas is released along with the metal hydroxide. As you move down the group, the reaction gets faster and more violent. This demonstrates that as you move below Group 1, the alkali metals' reactivity rises.

Chlorides are created when any of the group 1 metals interact with chlorine. At room temperature, the chlorides are all white solids that dissolve to create a neutral solution. As you move down the group, the reactions get more forceful.

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Answer:

SnS

Explanation:

Tin(II) sulfide is a chemical compound of tin and sulfur. The chemical formula is SnS. Its natural occurrence concerns herzenbergite, a rare mineral.

Answer:

SnS

Explanation:

Tin, as it shows on the periodic table can have a +2 or +4 charge.

Sulfide is just Sulfur which has a -2 charge.

It tells us the charge of the tin in roman numerals. In this case (II) means two, so it is tin with a charge of two.

In order for these to balance each other, we are going to take one of the tin and one of the sulfur because it the +2 and -2 add to zero.

Answer: It is C I just did this question in math class

Explanation:

Answer:

26.9L of SO2

Explanation:

The reaction between Sulphur and oxygen is as follows:

\(S_2 + 2O_2 \to 2SO_2\)

This implies that:

2 moles of oxygen reacts with 1 mole of sulphur to produce 2 moles of SO₂

2 moles of oxygen also yields 2 moles of SO₂

The number of moles of oxygen given is determined as:

\(= 26.9 \ L \ of \ O _2 \times (\dfrac{1 \ mol \ of O_2 }{22.4 \ L}) \\\\ = 1.20 \ mol \ of \ O_2\)

The number of moles of SO₂ by using the ratio is:

\(= 1.20 \ mol \ of \ O_2 \times (\dfrac{1 \ mol \ of \ SO_2 }{1 \ mol \ O_2}) \\ \\ = 1.20 \ mol \ of SO_2\)

Finally, the volume by applying the new moles is computed as:

\(= 1.20 \ moles \ of \ O_2 \times ( \dfrac{1 \ mo \ of \ SO_2}{1 \ mol \ of O_2}) \times ( \dfrac{22.4 }{1 \ mol }) \\ \\ = 26.9 \ L \ of \ SO_2\)

Answer:

The density of tin is 7.31 g/cm³.

Explanation:

Given that the formula of density is D = m/v where m represents mass and v is volume :

D = 16.52/2.26

D = 7.31 g/cm³ (3sf)

Answer:

235L

Explanation:

PV =nRT

V = nRT/P

47.20 °C is 320.35K

V = (79.5 mol)(0.0821 atm•L/mol•K)(320.35K)/8.91atm

V = 234.6698577L

Round to 3 sig figs: 235L

Answer:

Arrhenius acids produce H^+ in solution. Wouldn't HI be an Arrhenius acid?

HI ==> H^+ + I^-

Arrhenius bases produce OH^- in solution? Wouldn't that be CsOH?

CsOH ==> Cs^+ + OH^-

Arrhenius acid: HI (hydrogen iodide) and Arrhenius base: CsOH (cesium hydroxide).

In the acid-base reaction HI + CsOH → CsI + H₂O, hydrogen iodide (HI) is the Arrhenius acid, and cesium hydroxide (CsOH) is the Arrhenius base.

According to the Arrhenius theory of acids and bases, an acid is a substance that produces hydrogen ions (H⁺) when dissolved in water. In this reaction, HI dissociates in water to form H⁺ ions and iodide ions (I⁻):

HI → H⁺ + I⁻

On the other hand, a base is a substance that produces hydroxide ions (OH⁻) when dissolved in water. CsOH dissociates in water to produce Cs+ ions and OH⁻ ions:

CsOH → Cs⁺ + OH⁻

When the two reactants, HI and CsOH, are combined, they undergo a neutralization reaction. The H⁺ ion from the acid combines with the OH⁻ ion from the base to form water (H₂O):

H⁺ + OH⁻ → H₂O

The remaining ions, Cs⁺ and I⁻, combine to form the salt cesium iodide (CsI):

Cs⁺ + I⁻ → CsI

Thus, in the overall reaction, the Arrhenius acid HI donates an H⁺ ion, and the Arrhenius base CsOH donates an OH⁻ ion, leading to the formation of water and the salt CsI. This reaction is an example of a neutralization reaction, where an acid and a base react to form a salt and water.

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The net ionic equation for the reaction between potassium sulfide and magnesium iodide is S2- + Mg2+ -> MgS, as the potassium and iodide ions are spectator ions and do not participate in the reaction.

To determine the net ionic equation for the reaction between potassium sulfide (K2S) and magnesium iodide (MgI2), we first need to identify the ions present in each compound and then determine the products formed when they react.

Potassium sulfide (K2S) dissociates into two potassium ions (K+) and one sulfide ion (S2-):

K2S -> 2K+ + S2-

Magnesium iodide (MgI2) dissociates into one magnesium ion (Mg2+) and two iodide ions (I-):

MgI2 -> Mg2+ + 2I-

Now, we need to determine the possible products when these ions combine. Since potassium (K+) has a +1 charge and iodide (I-) has a -1 charge, they can combine to form potassium iodide (KI):

K+ + I- -> KI

Similarly, magnesium (Mg2+) and sulfide (S2-) can combine to form magnesium sulfide (MgS):

Mg2+ + S2- -> MgS

Now, we can write the complete ionic equation by representing all the ions present before and after the reaction:

2K+ + S2- + Mg2+ + 2I- -> 2KI + MgS

To obtain the net ionic equation, we remove the spectator ions, which are the ions that appear on both sides of the equation and do not participate in the actual reaction. In this case, the spectator ions are the potassium ions (K+) and the iodide ions (I-).

Thus, the net ionic equation for the reaction between potassium sulfide and magnesium iodide is:

S2- + Mg2+ -> MgS

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Answer:

Its a compound :PP

Explanation:

have a good day

Answer:

Compound

Explanation:

Answer:

0.286 moles

Explanation:

i hope this is helpful for you

Answer: NH3 = 9/5    H20= 9/2

Explanation:

Mr of NH3 = 17g/mol

Mr of H20 = 18g/mol

NH3 = 30.6g divide by 17g/mol = 1.8 mol

                                                      = 9/5

H20 = 81.3g divide by 18g/mol = 4.5 mol  

                                                     = 9/2

Upon reacting with oxygen would form the greatest amount of carbon dioxide e) all (a-c) of the above would form equal amounts.

Isomer are compound which are same molecular formula but different structural formula. The isomers of pentane are n-pentane, isopentane and neopentane, they have same molecular formula but the arrangement of atoms is different. Pentane is an organic compound with the formula C5H12—that is, an alkane with five carbon atoms.

Thus, Upon reacting with oxygen would form the greatest amount of carbon dioxide will be the same in all isomers.

Thus, the correct option is e.

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Answer:

desity =mass /volume

27/ 3cube

1g/cm³

Considering the definition of the law of conservation of matter, the law of conservation of matter establishes that matter cannot be created or destroyed (option C).

The law of conservation of matter holds that, within a closed system, the amount of matter involved in a chemical reaction is constant, meaning a closed system means an environment that isolates the components involved in the reaction from the outside.

In other words, this law establishes that the mass of the reactants consumed is equal to the mass of the products obtained, even though they have been transformed into each other.

In other words, the law of conservation of matter states that matter is neither created nor destroyed during a chemical reaction, it is only transformed.

In summary, the law of conservation of matter establishes that matter cannot be created or destroyed (option C).

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Scientific investigations into genes have helped scientists solve major societal issues and the issue would most likely benefit from these investigations is treating inherited diseases. Thus, option A is correct.

An endoscopy is a technique or procedure which has been used in medical field to look the inner part of the body. The procedure of endoscopy required an endoscope to look after the inside structure of a hollow organ or the body cavity.

The main advantage of endoscopy is that like other medical techniques of imaging it doesn't inserted directly into the body part or organ. The purpose of endoscopy is to collect samples of tissue to diagnose the disease which can be responsible for anemia, diarrhea, bleeding as well as inflammation.

Therefore,Scientific investigations into genes have helped scientists solve major societal issues and the issue would most likely benefit from these investigations is treating inherited diseases. Thus, option A is correct.

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The first step we have to follow is to add the given mass to find the total mass of the solution:

Now, divide the mass of the solute by the mass of the solution and multiply it times 100 to find the percent by mass:

The percent by mass of the solute in the solution is 17.1%.

The final temperature of the gas is 269.9 K, or -3.25 °C, which was calculated with the help of ideal gas equation.

The ideal gas equation gives the relation between pressure, volume and temperature.

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

To find the initial volume of the gas. We can use the fact that the number of moles of gas does not change during the cooling process:

n = 0.850 moles

We can also use the ideal gas law to find the initial volume of the gas:

PV = nRT

V = nRT/P

where R = 0.08206 L atm/K mol is the gas constant.

Convert the initial temperature from Celsius to Kelvin:

T1 = 85 °C + 273.15 = 358.15 K

Substitute the given values into the equation:

V₁ = (0.850 mol)(0.08206 L atm/K mol)(358.15 K)/(1 atm) = 24.03 L

Now we can use the combined gas law to find the final temperature:

(P₁V₁/T₁) = (P₂V₂/T₂)

Substitute the given values into the equation:

(1.25 atm)(24.03 L)/(358.15 K) = (P₂) (17.55 L)/(T2)

Solve for T₂:

T₂ = (P₂)(17.55 L)(358.15 K)/(1.25 atm)(24.03 L)

T₂ = 269.9 K

Therefore, the final temperature of the gas is 269.9 K, or -3.25 °C.

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An ethyl group is an alkyl substituent produced from ethane in chemistry (C2H6). It has the chemical formula -CH2CH3 and is frequently shortened to Et.

Draw structure of 4-ethyl-2,2,7trimethyloctane:

An ethyl group is an alkyl substituent produced from ethane in chemistry (C2H6). It has the chemical formula -CH2CH3 and is frequently shortened to Et.

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The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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