The following molecules contain polar covalent bonds. Which are overall nonpolar molecules? 2nd attempt Choose one or more: a. CHCL3
b. CCI4
c. BH3
d. H2S
e. CO2

Answer:

the answer is : c

hope this will help you

Answer:

The question is very complicated. In the liquid you should be able to see the solid. Anyway here is your answer. Hope it helps!

Explanation:

Mixing of Substances:

Many types of solids will dissolve into liquids under the right conditions. Certain factors will speed up the process of dissolving, including stirring the substance and heating it.

Answer and Explanation:

When a solid dissolves into a liquid, a solution is made. This happens because the solid is made up of particles that will come apart, or dissociate, in the liquid. It will appear that the solid has disappeared into the liquid, when in fact, its particles are still there. For example, salt (NaCl) easily dissolves in water. From a chemistry standpoint, it does so because the salt molecules separate into their charged ions once in the water. The ions become attracted to the slightly charged water molecules, making them stay in the solution. This process can be reversed. If the water is evaporated, the salt ions will come back together to form NaCl molecules.

Answer: Examples of surface tension

Explanation:

Water striders use the high surface tension of water and long, hydrophobic legs to help them stay above water. Water striders use this surface tension to their advantage through their highly adapted legs and distributed weight.

Answer:

Explanation:

To find [H+] in the solution we must first find the pH

That's

pH = - log[H+]

pH + pOH = 14

pOH = 0.253

pH = 14 - 0.253

pH = 13.747

Since we've found the pH we can now find the [H+] in the solution

We have

pH = - log[H+]

13.747 = - log[H+]

Take antilog of both sides

We have the final answer as

\([H+] = 1.79 \times {10}^{ - 14} M\)

Hope this helps you

Answer:

Okay so we know that pOH + pH = 14, so if pOH is 0.253 the pH would be 13.747.  

And pH = -log [H+], so [H+] = 10^(-pH) -->This is just the antillog...  

so [H+] = 1.791e-14, which would make sense for the strongly basic solution (so B is the correct answer)  

Hope this helps...

When human activities release excessive amounts of carbon dioxide and other greenhouse gases into the atmosphere, then atmosphere is most greatly impacted.

Greenhouse gases are gases the in the atmosphere of Earth that trap heat.

The greenhouse gases trap heat in the atmosphere and contribute to the phenomenon of global warming, which has numerous negative effects on the climate and environment.

Excessive greenhouse gas emissions can cause rising global temperatures, more frequent and severe weather events, sea level rise, ocean acidification, and other environmental changes that have significant impacts on ecosystems, agriculture and human societies. Therefore, it is important to reduce greenhouse gas emissions to mitigate the impacts of the climate change.

To know more about greenhouse gases, refer

https://brainly.com/question/14507701

#SPJ9

Answer:

6

Explanation:

Work Shown:

Force = Mass*Acceleration

F = ma

12 = m*0.2

12/0.2 = m

60 = m

m = 60 kilograms

Hypothesis could be: "The temperature of the water affects the rate of dissolution of potassium nitrate, with higher temperatures leading to faster dissolution and lower temperatures leading to slower dissolution."

This hypothesis is based on the knowledge that temperature affects the solubility of solids in liquids, with higher temperatures generally leading to higher solubility.

In the case of potassium nitrate, it is likely that the colder water during the winter months reduces its solubility, making it take longer to dissolve, while warmer water during the summer months increases its solubility, making it dissolve faster.

To test this hypothesis, one could conduct an experiment in which the same amount of potassium nitrate is added to water at different temperatures (e.g. room temperature, warm water, and cold water) and the time taken for the potassium nitrate to dissolve is measured.

The results of this experiment could be used to either support or refute the hypothesis.

To know more about Hypothesis:

https://brainly.com/question/606806

#SPJ1

Among the given metals, copper (Cu) is the one that will dissolve in nitric acid but not in hydrochloric acid.

Option (c) is correct

Nitric acid  is a strong oxidizing acid that can dissolve a variety of metals, including copper. When copper reacts with nitric acid, it undergoes oxidation, and copper(II) ions ( are formed.

However, hydrochloric acid (HCl) is not a strong oxidizing agent, and it primarily acts as a proton donor (acid) in aqueous solutions. Copper does not readily react with hydrochloric acid to form soluble copper compounds. Instead, it may undergo a slow reaction with chloride ions present in hydrochloric acid to form insoluble copper chloride compounds.

To summarize, among the given metals, copper (Cu) will dissolve in nitric acid but not in hydrochloric acid (HCl).

Therefore, the correct answer will be option (c)

To know more about metals

https://brainly.com/question/29404080

#SPJ4

Answer:

D

Explanation:

Answer:

C. Structure

Explanation:

Most water on Earth contains dissolved solvents because of water's polarity. Water is polar because of the polar covalent bond between hydrogen and water.This allows water to separate polar solutes and is what makes it such a good solvent. It is known as the universal solvent because it is capable of dissolving more substances than any other.

Answer:

Energy transfers from the metal to the water and calorimeter until they are all at room temperature.

Explanation:

Calorimetry is the process that is used to determine the amount of heat that has been transferred in any process. In any chemical or physical process, the amount of energy is required. This energy is measured by the process of calorimetry. A calorimeter is a device that is used in this process. The heat that has been used in the process is measured and the change in the temperature is noted.

Answer:

b

Explanation:

A conjugate acid-base pair is the pair of two compounds which differ by the presence of a proton. An acid will donate protons to a base and become a conjugate base. A base will accept protons and become a conjugate acid.Conjugate acid/base pairs are as follows:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−Explanation:

H2PO4− and HPO42−H2PO4− can donate a proton to become HPO42− and the latter can accept a proton to become H2PO4−.H2CO3 and CO32−H2CO3 can donate a proton to become CO32− and the latter can accept a proton to become H2CO3.HCl and Cl−HCl can donate a proton to become Cl− and the latter can accept a proton to become HCl.H3O+ and OH−H3O+ can donate a proton to become OH− and the latter can accept a proton to become H3O+.Therefore, the following are conjugate acid/base pairs:H2PO4− and HPO42−H2CO3 and CO32−HCl and Cl−H3O+ and OH−

to know more about conjugate intake pls visit:

https://brainly.com/question/32676227

#SPJ11

Answer:

For example, friction between our shoes and the floor stop us from slipping and friction between tyres and the road stop cars from skidding. Friction is sometimes unhelpful. For example, if you don't lubricate your bike regularly with oil, the friction in the chain and axles increases.

Explanation:

Answer:

Moles of magnesium produced via this electrolysis is 3.8798 moles.

Explanation:

we know that the relation between current and charge is given by

I=Q/t

 where

     I=Current consumed

     Q=amount of charge produced

     t=time

Given,

amount of current passed (I)=13A

Total time (t)= 16 h

moles of magnesium=?

we know the electrolysis equation of magnesium chloride'

     Mg+2 + 2e- -------> Mg

  which says that, 2 coloumbs of charge required to produce 1 mole of magnesium.

we can caluclate the charge produced from the given data using the relation I=Q/t

13A=Q/16*60*60

Q=748,800 coloumbs

  =748,800/96500 F                  (1F=96500C)

Q=7.76 F

from the electrolysis equation, 2F charge produces 1 mole of magnesium.Similarly,

moles of magnesium produced by 7.76F charge =7.76/2=3.387 moles

Answer:

15.68 Joules

Explanation:

In physics, work is defined as the energy that is transferred to or from an object by a force that displaces that object some distance.  The SI unit for work is a Joule, which itself is defined as 1 kg*m^2/s^2.

The attached file explains the steps to cacluate work done in raising the 2 kg book 0.8m.

This is a methanediol CH₂(OH)₂. The line structure have been attached in the figure given below.

This is also known as formaldehyde monohydrate. This is a organic compound with chemical formula CH₂(OH)₂, this is simply known as geminal diol which is a sugar alcohol. This is the product of hydration of formaldehyde. It is believe that this is occur as an intermediate in the decomposition of carbonyl compounds in the atmosphere and this is the by product of ozonolysis. It is used in and a microbial activity, biocide and nail conditioning. This also used in household products and commercial industries.

Learn more about structural formula here https://brainly.com/question/514499

#SPJ1

Diffusion and aeration, photosynthesis, respiration, and decomposition all have an ongoing impact. In addition to fluctuating dissolved oxygen levels caused by temperature, salinity, and pressure fluctuations.

In comparison to warm water, cold water can hold more dissolved oxygen. The concentration of dissolved oxygen is highest in the winter and early spring when the water temperature is low. The concentration of dissolved oxygen is frequently lower in the summer and fall when the water temperature is high.

Water molecules receive energy as a result of rising water temperatures, which in turn causes gas and water molecules to gain more energy. This increased energy dissolves the water and oxygen molecules' weak molecular bonds, allowing oxygen to escape.

To know more about decomposition visit-

https://brainly.com/question/8009068

#SPJ1

The pressure of air inside the balloon is 203 kPa. This is because the pressure of a gas is directly proportional to its volume.

Directly proportional is a mathematical term used to describe a linear relationship between two variables, where a change in one variable is directly reflected by a proportional change in the other variable. For example, if the number of hours a person works increases, the amount of money they earn will also increase proportionally. This linear relationship is also known as a "direct relationship" or a "direct variation".

Since you have halved the volume of the balloon, the pressure has doubled. The initial pressure of 101.5 kPa multiplied by 2 equals 203 kPa.

To learn more about directly proportional
https://brainly.com/question/28837405
#SPJ4

Answer:

The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. ... So the fault must be the youngest formation that is seen. The intrusion (D) cuts through the three sedimentary rock layers, so it must be younger than those layers

Explanation:

The law that represents an indirect or inverse proportionality is known as the inverse proportionality or inverse variation.

Inverse proportionality states that when one quantity increases, the other quantity decreases, and vice versa, in a predictable manner. In an inverse relationship, as one variable increases, the other variable decreases in such a way that their product remains constant. Mathematically, this can be expressed as y = k/x, where y and x are the variables, and k is a constant.

In an inverse proportion, if one variable doubles, the other variable will be halved, and if one variable triples, the other variable will be one-third. The relationship between the variables is characterized by an inverse or opposite behavior.

Some common examples of inverse proportionality include the relationship between speed and time taken to travel a fixed distance (speed is inversely proportional to time), or the relationship between the number of workers and the time taken to complete a task (more workers result in less time required).

To know more about the Peoportionality, here

https://brainly.com/question/15314187

#SPJ4

Therefore, the answer is (e) 0.20 mol (rounded to two significant figures).

The balanced chemical equation for the given reaction is:4Fe + 3O2 → 2Fe2O3Given, moles of Fe = 0.45 mol

Moles of O2 = 0.30 mol

According to the balanced chemical equation, 4 moles of Fe react with 3 moles of O2 to form 2 moles of Fe2O3.

So, the mole ratio of Fe to Fe2O3 is 4:2 or 2:1.

To calculate the moles of Fe2O3 produced, we need to convert the given moles of Fe to moles of Fe2O3 using the mole ratio.

Moles of Fe2O3 produced = (0.45 mol Fe) / (2 mol Fe2O3 / 4 mol Fe)

Moles of Fe2O3 produced = 0.45 mol Fe × (2 mol Fe2O3 / 4 mol Fe)

Moles of Fe2O3 produced = 0.225 mol Fe2O3

to know more about mole fraction visit:

https://brainly.com/question/30724931

#SPJ11

Approximately 3.04 grams of magnesium would be required to react with 0.25 moles of hydrochloric acid.

To determine the mass of Mg required, we need to use the balanced chemical equation for the reaction between hydrochloric acid (HCl) and magnesium (Mg):

2HCl + Mg → MgCl2 + H2

From the balanced equation, we can see that 2 moles of HCl react with 1 mole of Mg. Therefore, if 0.25 mol of HCl reacts, we would need half of that amount, which is 0.125 mol of Mg.

To calculate the mass of Mg required, we need to multiply the number of moles of Mg by its molar mass. The molar mass of Mg is given as 24.31 g/mol. Therefore, the mass of Mg required can be calculated as follows:

Mass of Mg = Number of moles of Mg × Molar mass of Mg

Mass of Mg = 0.125 mol × 24.31 g/mol

Mass of Mg = 3.04 g

For such more questions on moles

https://brainly.com/question/19964502

#SPJ8

Answer:The pOH of the solution is 9.914

Explanation:

pH is given as the negative logarithm (base 10) of the hydronium ion concentration [H₃O⁺] that is

pH= - log [H₃O⁺]

Since we are given  [H₃O⁺]=8.2 x 10⁻⁵,

pH=- log (8.2 x 10⁻⁵)

pH= 4.086

The pOH gives s the measurement of the concentration of OH− ions, Hence,

pH + pOH= 14

from the above calculation, we got  pH=4.086

So

4.086 + pOH=14

pOH= 14 - 4.086

pOH= 9.914

The pOH of the solution is 9.914

The pH of the solution made with 2.49 mol of barium hydroxide fully dissolved in 1.00 L of distilled water is 4.57.  

To determine the pH of a solution, we need to know the hydrogen ion ([H⁺) concentration of the solution. The pH scale is a measure of the concentration of [H⁺ ions in a solution, with 0 being highly acidic, 7 being neutral, and 14 being highly basic.

The formula for calculating the pH of a solution is:

pH = -log[[H⁺]

Where [[H⁺] is the concentration of H+ ions in the solution.

The pH of the solution made with 2.49 mol of barium hydroxide fully dissolved in 1.00 L of distilled water is 4.57.  

To calculate the concentration of [H⁺ions in a solution, we can use the formula:

[H⁺] = [OH⁻] / [H₂O]

Where [OH⁻] is the concentration of hydroxide ions in the solution and [H₂O] is the concentration of water in the solution.

We can use the given information to calculate the concentration of hydroxide ions and water in the solution.

[OH⁻] = [Ba(OH)₂]/[H₂O] = (2.49 mol * 12.01 g/mol) / (1.00 L * 18.01 g/mol) = 0.0405 mol/L

[H₂O] = (1.00 L * 18.01 g/mol) / (1.00 L * 18.01 g/mol) = 1.00 mol/L

Substituting these values into the formula for [H⁺], we get:

pH = -log[H⁺] = -log(0.0405 mol/L) = 4.57

Therefore, the pH of the solution made with 2.49 mol of barium hydroxide fully dissolved in 1.00 L of distilled water is 4.57.  

Learn more about distilled water

https://brainly.com/question/26181855

#SPJ4

The volume will be 2400 ml.

The equation used here will be

M1 × V1 = M2 × V2

M1 = initial concentration

M2 = final concentration

V1 = initial volume

V2 = final volume

So according to the data;

M1 = 12m

M2 = 0.15m

V1 = 30ml

V2 = ?

By putting the values in the equation as follows;

M1 × V1 = M2 × V2

V2 = M1 × V1  / M2

By putting the values given in the question we will solve this question as follows

V2 =  12 × 30 / 0.15

V2 = 360 / 0.15

So the volume used will be;

V2 = 2400 ml

To look more about moles click here

brainly.com/question/26416088

#SPJ4

Answer:

2.kinetic energy.

5Electromagnetic energy 

6.kinetic energy.

8.Chemical energy

9. 0nuclear power

10. Sound energy 

11. mechanical energy.

After 14.4 seconds, 12.5g of a 50g nitrogen sample are still present.

Half-life is the length of time that it takes for half of an unstable nucleus to go through its decay. The half-life of each chemical varies. Because carbon-10's half-life is so short (19 seconds), it is not possible to find this isotope in nature.

The Foundational Elements. A half-life is the duration needed for something to reduce in quantity by half. The phrase is most frequently used in reference to radioactive decay, which takes place when unstable atomic particles shed energy.

\(N(t) = N_0 (1/2)^(t/t_1/2})\)

N(t) = quantity of the substance remaining

N₀ = initial quantity of the substance

t = time elapsed

t1/2 = half life of the substance

To know more about half-life visit:-

https://brainly.com/question/24710827

#SPJ10                            

Option - D:The statement that is NOT TRUE about simple distillation is d. A sand bath can be used in place of a water bath to provide even heating of the flask.

Simple distillation involves heating a mixture to evaporate the more volatile component, condensing the vapour, and collecting the purified liquid. As it can sustain a consistent temperature near to the mixture's boiling point, a water bath is frequently utilised to enable uniform heating of the flask. As a sand bath might have hot patches or temperature changes that can impact the separation's quality, it could not deliver as uniform heating. a technique for separating mixes in a boiling liquid combination based on variations in their volatilities. After applying heat to a sample combination, the components are instantly cooled by the action of cold water in a condenser. There are two steps in the distillation refining process.

For such more questions about  simple distillation:

brainly.com/question/29037176

#SPJ4

The percentage yield of the  new production technique is 82.8%

Production is the procedure by which finished products are obtained form the raw materials. The production process involves the passing of raw materials through a certain procedure that involves the use of certain machines and equipment to give us the required products.

We are told in the question that there are three shifts;

Shift 1 produces 4562 grams

Shift 2 produces 5783 grams

Shift 3 produces 5247 grams

Average production from the three shifts = 4562 grams + 5783 grams +  5247 grams/3 = 5197 grams

The theoretical average yield is =  7000 grams + 7000 grams + 7000 grams/3 = 7000 grams

Now the percentage yield = actual yield/ theoretical yield * 100/1

percentage yield = 5197 grams/7000 grams * 100/1

percentage yield = 82.8%

Learn more about percentage yield :https://brainly.com/question/27492865

#SPJ1

In this given chemical equation of oxidation reaction , Bromine will lose an electron.

In the given chemical reaction we can observe that initially Bromine is in a negative state. Later on it undergoes oxidation reaction. In any oxidation reaction there is a loss of electrons. Similarly when the oxidation increases in the Bromine it loses its electron. Whereas in the potassium there is no evident change. It remains cation i.e. positive charge in the reaction.

Let’s understand this after observing this equation deeply: Cl2 (g) + K+Br- gives K+Cl- + Br2(g) - Here in the equation, 1- of Bromide turns 0 after the reaction, where 1+ of potassium is the same in both the reactant & product side.

Thus, from the above argument we can conclude that Bromine will lose an electron.

Learn more about oxidation reaction here:

https://brainly.com/question/2525090

#SPJ4

An amine has a trigonal pyramidal structure, and the nitrogen (N) atom is electron-rich. Nitrogen is a diatomic gas (N₂), meaning it consists of two nitrogen atoms bonded together.

Nitrogen is a chemical element with the symbol N and atomic number 7. It is a non-metal and makes up about 78% of the Earth's atmosphere, making it the most abundant gas in the air. Nitrogen is an essential element for living organisms and plays a crucial role in various biological processes.

Nitrogen compounds, such as ammonia (NH₃) and nitrate (NO₃⁻), are important for various biological and industrial applications. Ammonia is used as a fertilizer and in the production of various chemicals, while nitrates are essential nutrients for plant growth.

Learn more about nitrogen: https://brainly.com/question/16711904

#SPJ11