2. Which of the following best describes temperature? *

O Number of molecules
Motion of molecules
O Size of molecules
O Type of molecules

Answers

Answer 1

Answer:

motion of molecules because we gonna see which one is in a solid state and what's so ever


Related Questions

Giving BRAINLIEST, please HELP!

Answers

Answer:

-65 kJ

Explanation:

To use Hess's Law, you need to combine the equations in a way that results in the desired equation. To add reactants/products, just add the equations and their subsequent heat of reactions. Subtracting reactants/products involves flipping the signs of enthalpies, duplicating reactants/products involves multiplying the coefficients and enthalpies by a desired number.

    A + 2B -->   C + D

+            B --> 2C + D
------------------------------------

    A + 3B --> 3C + 3D

In this case, you only need to add the equations together to get the desired equation. Because you just add the equations, combine each equations' heat of reaction.

(-20 kJ) + (-45 kJ) = -65 kJ

The overall heat of reaction of the desired reaction is -65 kJ.

I’m confused when it comes to chem

Answers

Answer:

The chemistry is the brach of science dealing with properties of matter and the changes which the matter undergo

Explanation:

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

Hi!
Can sportive help me with this pls, I’m really bad at chemistry…
I hope someone helps! Have a nice day !

Answers

it's 500kg

Explanation:

I did this I hope this helps

The process that causes a spark to occur when the discharge wand is close to the Van de Graaff generator is similar to the process that causes lightning to form. Use what you have learned about the tendency of potential energy to decrease to try to explain how lightning occurs.

Answers

Answer:

Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud. When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud.

Explanation:

Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud.

What is a generator?

In electricity generation, a generator is a device that converts motive power (mechanical energy) into electric power for use in an external circuit.

Lightning is an electric current. To make this electric current, a cloud is needed.

When the ground is hot, it heats the air above it. This warm air rises. As the air rises, water vapour cools and forms a cloud. When air continues to rise, the cloud gets bigger and bigger. In the tops of the clouds, the temperature is below freezing and the water vapour turns into ice.

Now, the cloud becomes a thundercloud. Lots of small bits of ice bump into each other as they move around. All these collisions cause a build-up of electrical charge.

Eventually, the whole cloud fills up with electrical charges. Lighter, positively charged particles form at the top of the cloud. Heavier, negatively charged particles sink to the bottom of the cloud.

When the positive and negative charges grow large enough, a giant spark - lightning - occurs between the two charges within the cloud. This is like a static electricity sparks you see, but much bigger.

Hence, the positive and negative charges grow large enough, that a giant spark - lightning - occurs between the two charges within the cloud.

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A solid substance turns directly into a gas. Which term describes this change?
deposition
evaporation
melting
sublimation

Answers

Answer:

the correct answer would be D. Sublimation

Explanation:

Sublmation- solid transforming into a gas, skipping the liquid stage.

eveporation- a liquid transformimg into a gas

melting- a solid transforming into a liquid

deposition- the opposite of sublimation

hope this helps

Answer:

D) Sublimination

Explanation:

Explain the effect of carbon dioxide on the ph of the oceans.

Answers

Answer:

When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean's pH (a measure of how acidic or basic the ocean is) drops.

Explanation:

hope this helps

Please help witht 4 and 5

Answers

Answer:

#4: 0.89 mol/L #5: 0.36 mol

Explanation:

#4: Morality is Moles/ Liters

So take 3.2 mols ÷ 3.6 L = 0.8888... since there are 2 sig figs in the question the answer would round to 0.89 mol/L

#5: to find the number of moles needed, you take the mol/L and multiply that by the volume.

0.89 mol/L ×0.400L = 0.356 mols. the liters cancel out. Since 0.89 has the least number of sig figs your final answer should have 2. which it 0.36 mols.

I hope this helps, good luck!

Hello people ~
For which of the following is the Hinsberg approach used?

a) Preparation of primary amines

b) Separation of amine mixtures

c) Preparation of tertiary amines

d) Preparation of secondary amines

Answers

Answer:

separation of amine mixtures

Explanation:

There are three types of amines

Primary(1°)Secondary (2°)Tertiary(3°)

Hinsberg approach is used distinguish between these amines

In what order should the options appear so as to correctly reflect the order of clomiphene's mechanism of action

Answers

The order which reflect clomiphene's mechanism of action include the following:

Secretion of increased amount of follicle stimulating hormone (FSH) and LH (luteinizing hormone).Growth of the ovarian follicle.Ovulation.

What is Ovulation?

This is the process in which a mature egg is released from the ovary and clomiphene is a medication which induces it.

This is done by the steps mentioned above so as to ensure mature egg is released for fertilization.

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Why is the Northern Hemisphere warmer when tilted to the sun?

Answers

Answer:

The Sun gives off UV radiation and heat waves, when tilted closer, it is closer to that UV radiation and heat waves.

For example, if you put a heat lamp closer to a rock the rock would get warmer, if you put it further away it would receive less heat therefore making less warmer.

what happens when burning matchstick is held near the nitrogen gas jar​

Answers

Explanation:

No observable change because nitrogen is an inert gas...

Salt and pepper are placed in a jar and the jar is shaken. What has formed?

Answers

Answer:

A MIXTURE

Explanation:

No chemical reaction has occurred.... you have just mixed up the two substances togehter.... you have created a MIXTURE

Lilly took 57% seconds to walk for classroom to library if the distance between the classroom and library was 38 m at what average speed did lily walk m/min

Answers

Answer:

2.17 seconds i believe.

Explanation

I took the amount of meters and turned them into feet before dividing the amount of feet by the total amount of seconds it took for her to travel to the classroom library

Briefly explain the source, harmful effects and physical properties of oxides of
nitrogen.

Answers

Answer:

Nitrogen reacts with oxygen to form a number of nitrogen oxides. It exhibits different oxidation states in its oxides, ranging from +1 to +5. Oxides of nitrogen having nitrogen in the higher oxidation state are more acidic than that in lower oxidation state. Nitrogen oxides are critical components of photochemical smog. They produce the yellowish-brown colour of the smog. In poorly ventilated situations, indoor domestic appliances such as gas stoves and gas or wood heaters can be significant sources of nitrogen oxides.

Following are the harmful effects caused by the oxides of nitrogen

Nitrogen oxides causes irritation in mucous membrane.

Large concentrations of Nitrogen oxide causes lungs problems in humans

It causes injuries to vegetation by damaging leaves.

Nitrogen oxide oxidizes Hydrocarbons in the presence of sunlight, which causes eye irritation, asthama attacks, nasal and throat infections.

NO: sharp, sweet-smelling, colourless gas. Melting point: -163.6°C. Boiling point: -151.8°C. Relative Density: 1.04 (air = 1) NO2: reddish-brown gas with irritating odour

Write balanced net ionic equations that show the two relevant ionization steps for glycine

Answers

Write chemical equations and corresponding equilibrium expressions for each of the two ionization steps of carbonic acid.

Choose a federal law from the list below.

Clean Air Act
Clean Water Act
Endangered Species Act
Pollution Prevention Act
Research the law using the library and other resources. Write a 500 word report describing the law, who or what it protects, and why it was enacted. Be sure to include when the law was first passed, which groups supported it, which groups opposed it, and any recent modifications. Write your report in the essay box below.

Answers

The principal law governing pollution of the nation’s surface waters is the Federal Water

Pollution Control Act, or Clean Water Act. Originally enacted in 1948, it was totally revised by

amendments in 1972 that gave the act its current dimensions. The 1972 legislation spelled out

ambitious programs for water quality improvement that have since been expanded and are still

being implemented by industries and municipalities.

This report presents a summary of the law, describing the statute without discussing its

implementation. Other CRS reports discuss implementation, including CRS Report R42883,

Water Quality Issues in the 113th Congress: An Overview, and numerous products cited in that

report.

The Clean Water Act consists of two major parts, one being the provisions which authorize

federal financial assistance for municipal sewage treatment plant construction. The other is the

regulatory requirements that apply to industrial and municipal dischargers. The act has been

termed a technology-forcing statute because of the rigorous demands placed on those who are

regulated by it to achieve higher and higher levels of pollution abatement under deadlines

specified in the law. Early on, emphasis was on controlling discharges of conventional pollutants

(e.g., suspended solids or bacteria that are biodegradable and occur naturally in the aquatic

environment), while control of toxic pollutant discharges has been a key focus of water quality

programs more recently.

Prior to 1987, programs were primarily directed at point source pollution, that is, wastes

discharged by industrial and municipal facilities from discrete sources such as pipes and outfalls.

Amendments to the law in that year authorized measures to address nonpoint source pollution

(runoff from farm lands, forests, construction sites, and urban areas), which is estimated to

represent more than 50% of the nation’s remaining water pollution problems. The act also

prohibits discharge of oil and hazardous substances into U.S. waters.

Under this act, federal jurisdiction is broad, particularly regarding establishment of national

standards or effluent limitations. Certain responsibilities are delegated to the states, and the act

embodies a philosophy of federal-state partnership in which the federal government sets the

agenda and standards for pollution abatement, while states carry out day-to-day activities of

implementation and enforcement.

To achieve its objectives, the act is based on the concept that all discharges into the nation’s

waters are unlawful, unless specifically authorized by a permit, which is the act’s principal

enforcement tool. The law has civil, criminal, and administrative enforcement provisions and also

permits citizen suit enforcement.

Financial assistance for constructing municipal sewage treatment plants and certain other types of

water quality improvements projects is authorized under Title VI. It authorizes grants to capitalize

State Water Pollution Control Revolving Funds, or loan programs. States contribute matching

funds, and under the revolving loan fund concept, monies used for wastewater treatment

construction are repaid to states, to be available for future construction in other communities.

The first time dicaprio heard about global warming, who told him that it was the most important issue of our time.

Answers

The answer for dis is : Al Gore

Calcium has an atomic number of 20. An atom of calcium has ____ electrons in its first energy level and ____ electrons in its second energy level.

Answers

Hug baby bye love you love love miss love bye bye love bye girl bye love bye baby love you love love bye bye baby bye bye girl love love miss love love you bye love love miss bye bye baby bye girl baby uuuuy bye baby girl baby baby love you love bye love love bye baby bye love love bye love love miss bye love you bye bye love love bye baby bye girl love love bye bye love love miss 574366 5)?676)$76664)456

What is the solubility of CaCl2 at 20°C

Answers

Answer:1,01

Explanation:

Determine the molarity of a solution formed by dissolving 3.00 moles of NaCl in enough water to yield 4.00 L of solution. 3.00 M 0.750 M 2.00 M 1.33 M 12.00 M

Answers

Taking into account the definition of molarity, the molarity of the solution formed by dissolving 3.00 moles of NaCl in enough water to yield 4.00 L of solution is 0.75 [tex]\frac{moles}{liter}[/tex].

Definition of molarity

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

[tex]Molarity=\frac{number of moles}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

Molarity in this case

In this case, you know:

number of moles= 3 molesvolume= 4 L

Replacing in the definition of molarity:

[tex]Molarity=\frac{3 moles}{4 L}[/tex]

Solving:

molarity= 0.75 [tex]\frac{moles}{liter}[/tex]

Finally, the molarity of the solution formed by dissolving 3.00 moles of NaCl in enough water to yield 4.00 L of solution is 0.75 [tex]\frac{moles}{liter}[/tex].

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Can someone please help me? I will give brainliest:(

Answers

Answer D and B i think if imma be honest

When a Pd-106 nuclide is struck with an alpha particle, a proton is produced along with a new nuclide. What is this new nuclide

Answers

When a Pd-106 nuclide is struck with an alpha particle, a proton is produced along with a new nuclide. The new nuclide is Ag-109.

What are alpha particles?

Alpha particles (a) are made up of two protons and two neutrons that are tightly bound together.

They are emitted from the nucleus of some radionuclides during alpha decay, a type of radioactive decay.

Thus, the correct option is D, Ag-109.

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What types of elements are involved in the formation of ionic bonds?.

Answers

Answer:

Metal and non-metal ions.

Explanation:

Ionic bonds occur between metal and non-metal ions because metals "want" to give up their electrons and non-metals "want" to gain electrons.

What is the molarity of a solution with a volume of 2.3 Liters and 9.7 moles?

Answers

Answer:

Explanation:

molarity = (moles of solute)/(liters of solution) = 9.7/2.3 = 4.2

The teacher prepares 2.50 liters (l) of a salt solution for a class experiment. how many quarts (qt) are in 2.50 l? (1 l =1.06 qt) 2.17 qt 2.36 qt 2.52 qt 2.65 qt

Answers

The teacher prepares 2.50 liters (l) of a salt solution for a class experiment, in this quantity 2.65 quartz are present.

What is conversion factor?

Conversion factor is a quantity which will be multiplied or divide with any other measurement for the conversion of that measurement.

Given that quantity of salt solution = 2.50 L

We know that, 1 L = 1.06 qt

Here conversion factor is 1.06 qt/L as it will be multiplied on given measurement to convert into quartz as:

2.50L = 2.50L × 1.06qt/L = 2.65qt

Hence required value is 2.65qt.

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Answer:

2.65 qt

Explanation:

Which property of water helps it maintain a relatively stable temperature?
High specific heat capacity
Low density
Neutral nature
Nonpolar structure

Answers

Answer:

High spec heat cap

Explanation:

Specific heat =   Q/(m *Tchange)

re-arrange to

Tchange =  Heat/(m *spec heat)

   this shows that a high  spec heat (in the denominator) will require a lot of heat (in the numerator) to change the Temp much  

A linkage between two atoms formed by the sharing of electrons, or attraction is called a.

Answers

A covalent bond is formed by the sharing of electrons between 2 atoms.

What is a covalent bond?

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Sharing of electrons forms covalent bonds between the atoms.

These bonds are mainly formed between two similar atoms of electronegativity.

Where ionic bonds are formed by sharing electrons where there is an electronegativity difference between metals and non-metals. Ex. NaCl

Hence, a covalent bond is formed by the sharing of electrons between 2 atoms.

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i need help pls this isnt chemistry btw i just couldnt find science so i had to put that

Answers

Answer: 1. 10% is used to live 30% is stored.

2. an educated guess.

Explanation:

What is the name of the new technology whereby a glass fiber carries as much information as hundreds of copper wires?

Answers

Answer:

Fibre optic technology.

Explanation:

Fibre optic technology, as the name implies, uses light pulses to transmit data via strands of glass or plastic. It's the preferred technology for the government's National Broadband Network (NBN), which offers 100Mbps+ download speeds.

The results of a titration experiment were as follows:
# Volume of aqueous NaOH pipetted into the conical flask = 10. 00 mL
# Average volume of dilute HCl added from the burette to reach the endpoint
12. 54 mL
Molarity of the dilute HCI=1. 196 M
(a). Write the chemical reaction equation for the titration reaction. ​

Answers

The equation of the titration of hydrochloric acid and sodium hydroxide is given as:

[tex]NaOH + HCl \rightarrow NaCl + H_2O[/tex]

What is a chemical reaction equation?

An equation of a chemical reaction is a way of representing chemical reactions that occur using the symbols or chemical formula of the compounds reacting.

The titration of hydrochloric acid and sodium hydroxide is a chemical reaction which the given equation:

[tex]NaOH + HCl \rightarrow NaCl + H_2O[/tex]

Therefore, the reaction is a neutralization reaction.

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