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The volume of a gas is 3. 0 L, the pressure is 1. 0 atm, and the temperature is 300 K. A chemist changes one factor while keeping another constant so that the new volume is 2. 0 L. What are the new conditions?


A. The final pressure is 0. 5 atm, while temperature is kept constant.

B. The final temperature is 200 K, while pressure remains constant.

C. The final pressure is 0. 2 atm, while temperature is kept constant.

D. The final temperature is 350 K, while pressure remains constant

Explanation:

1. Nitrogen

3. Oxygen

4. Helium

look into the periodic system

question 1: nitrogen

question 3: oxygen

question 4: helium

Answer:

T=846K

Explanation:

We can use the formula for the Ideal Gas Equation, which is

[tex]PV=nRT[/tex]

P=pressure

V=volume

n=mols of gas

R=constant (0.08201 L-atm/mol-K)

T=temperature

We will have to rearrange to equation to find temperature, which is

[tex]T=\frac{PV}{nR}[/tex]

Time to solve:

[tex]T=\frac{(2.50 atm)(10.30L)}{(0.371 mols)(0.08206 L-atm/mol-K)}[/tex]

[tex]T=846 K[/tex]

If you want to convert to Celsius, subtract 273 to your answer, which will get you 573ºC.

Answer:

material a

Explanation:

it is expensive which means it's better quality

it's easy to make so you will be able to make lots and then make more money to buy more material

Answer:

really?!

Explanation:

this is a test your suppose to answer it

The observation implies that the solubility of a solution depends on both the amount of solute and the volume of solvent.

The solubility of a substance is the property of that substance to dissolve in a solvent.

The solubility of a solution is the ability of the solution to dissolve solutes.

Solubility depends on the quantity of solutes and solvents.

Thus, 100 mL water may be able to dissolve 35 g NaCl but not 70 g because the maximum solubility of the water is breached. In order to dissolve more NaCl, the volume of the water might need to be increased.

More on solubility can be found here:  https://brainly.com/question/22185953

Answer:

Explanation:

If you have your notes of the steps: like precipitation etc.. it should help you form a step by step phase change in raindrops.

Answer:

As a raindrop I would be in a body of water as a liquid. Slowly, the sun would heat me up until I evaporate. I would rise into the air as a gas and form a cloud as condensation. Then precipitation would occur. The temperature suddenly drops dramatically. I freeze and fall as a solid of ice.

I don't know if this is what you were looking for but I hope it helps.

Answer:

A. Protons

Explanation:

For an atom to be neutral, it must have the same number of electrons as protons. Since protons are positive and electrons are negative, that will result in a neutrally charged atom.

hope this helps!! p.s. i really need brainliest :)

Answer:

i also need like your question

Explanation:

Which statement is correct about the rocks at this location?

A. All three types of rock will become metamorphic if they stay at the surface of Earth.

B. If this location is buried deep underground, only the metamorphic rock will melt because it has already been heated before.

C. The metamorphic rock and sedimentary rock were already at this location and magma flowed into the other rocks.

D. The igneous rock will become metamorphic rock after the rock in the cliff side turns into sediment.

Answer:

I might be wrong but I'm pretty sure its B) Robin

Explanation:

Bc it says which animal gets its shelter by interacting with a living part of the environment and a robin is interacting with a tree branch and its a living part of the environment.

AGAIN SO SRRY IF ITS WRONG

Answer:

Explanation:

We need pH

[tex]\\ \rm\Rrightarrow pH=-log[H^+][/tex]

[tex]\\ \rm\Rrightarrow pH=-log10^{-5}[/tex]

[tex]\\ \rm\Rrightarrow pH=5[/tex]

Acidic

Considering the definition of pH,  the pH is lower than 7, so the solution is basic.

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

In this case,[H⁺]= 1×10⁻⁵ M.

Replacing in the definition of pH:

pH= - log (1×10⁻⁵ M)

Solving:

pH= 5

Finally, the pH is lower than 7, so the solution is basic.

Learn more about pH:

brainly.com/question/3992824

#SPJ6

Answer:

When fuels are burned in vehicle engines, high temperatures are reached. At these high temperatures, nitrogen and oxygen from the air combine to produce nitrogen monoxide. When this nitrogen monoxide is released from vehicle exhaust systems, it combines with oxygen in the air to form nitrogen dioxide.

Explanation:

Explanation:

Nitrogen and oxygen from the air combine at high temperatures in the engine to produce nitrogen (II) oxide by the reaction :

N2(g) + O2(g) → 2NO(g).

Nitric oxides rise in the atmosphere and are oxidized to nitrogen dioxide, NO2 which dissolves in the precipitating water to form acid rain.

Answer:

(1)

(c) A teacher puts hot sodium into a gas jar of chlorine.

The changes seen before, during and after this reaction were observed.

Complete the sentences.

Choose the answers from the box.

colourless

green

lilac

silver

white

yellowlorange

Sodium is a

solid.

Chlorine is a

gas.

The hot sodium burns with a

flame.

The product sodium chloride is a

solid.

1. slivery-white

2. yellow

3. lilac

4. colourless

Explanation:

Carbon dioxide (CO2) lewis structure has two oxygen atoms and one carbon atom. There are two double bonds around carbon atom in the CO2. No lone pairs on carbon atom and each oxygen atom has two lone pairs on their valence shells. Shape of CO2 is linear.

Answer:

14.297%

Explanation:

Answer:

14.297%

Explanation:

this is the percentage

Answer:

Adenine=33%

Thymine=33%

Guanine=17%

Explanation:

the base pairs percentages must be the same

Answer:

Yes It Is A Rock

Explanation:

It Is Not A True Mineral

[tex]\longrightarrow[/tex]From the kinetic molecular theory of gases, the average speed of gas molecules at a specific temperature and pressure is given by :-

[tex]\green{ \underline { \boxed{ \sf{v_{avg} = \frac{8RT}{\pi M}}}}}[/tex]

where

[tex]\longrightarrow[/tex]For two different gases A and B at the same temperature, it can be shown that the average speeds are inversely proportional to the square root of their molecular masses-

[tex]\green{ \underline { \boxed{ \sf{ \frac{v_{avg} ^A}{v_{avg}^B} = \sqrt{\frac{M_A}{M_B}}}}}}[/tex]

[tex]\sf average \:velocity \:of \:Cl_2,v_{avg} ^B= 0.0380 \:m/s [/tex]

Now,

[tex]\sf Molar \:mass \:of \:Cl_2 = 2\times atomic \:mass \:of \:Cl[/tex]

[tex]\implies[/tex][tex]\sf Molar \:mass \: of \:Cl_2 = 2\times 35.5[/tex]

[tex]\implies[/tex][tex]\sf Molar \:mass \:of \: Cl_2 = 71 \:g[/tex]

similarly,

[tex]\begin{gathered}\\\implies\quad \sf Molar \: mass \:of \: SO_2 = atomic \:mass \:of \:S +2\times \: atomic \: mass \: of \: O \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 32 +2\times 16 \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 32 +32 \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 64 \\\end{gathered} [/tex]

Putting Values in formula to get average velocity -

[tex]\begin{gathered}\\\implies\quad \sf { \frac{v_{avg} ^{SO_2}}{v_{avg}^{Cl_2}} = \sqrt{\frac{M_{SO_2}}{M_{Cl_2}}}}\\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf { \frac{v_{avg} ^{SO_2}}{0.0380} = \sqrt{\frac{71}{64}}}\\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf \frac{v_{avg} ^{SO_2}}{0.0380} = 1.05 \: \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf v_{avg} ^{SO_2}= 1.05 \times 0.038 \: \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf v_{avg} ^{SO_2} = 0.4 \: m/s\: \\\end{gathered} [/tex]

[tex]\longrightarrow[/tex]Thus the average velocity of sulphur dioxide molecules under the same conditions is 0.4 m/s

Answer:

.

Explanation:

According to Avogadro's law, the two gases will have equal number of molecules.

From the question, we are to determine how the two gases would compare according to Avogadro's law

First, we will state the Avogadro's law

Avogadro's law states that "equal volume of all gases at the same temperature and pressure contain the same number of molecules"

Now, from the given information

We have 2 liters of hydrogen gas and 2 liters of oxygen gas at the same temperature and pressure

According to Avogadro's law, gases that are equal in volume and are at the same temperature and pressure will have equal number of molecules.

Hence, according to Avogadro's law, the two gases will have equal number of molecules.

Learn more on Avogadro's law here: https://brainly.com/question/26174006

Answer:

See below, please

Explanation:

1 mol CH4 ——＞2 mol H2O=2x18 g/mol= 36 g

The question is not clear. You should tell us the concentration of CH4, methane.

Reaction

CH₄ (g) + 2O₂ (g) <=> CO₂ (g) + 2H₂O(g)

assume at STP ( 1 mole gas = 22.4 L)

for 20 L, moles of methane:

= 20 : 22.4 = 0.893

moles of water = 2/1 x mol methane = 2/1 x 0.893 = 1.786

mass of water = mol x molar mass = 1.786 x 18 g/mol = 32.148 g

A light-year is the distance a beam of light travels in a single Earth year. so it is A distance

Give me brainliest

Answer:

DNA from dead Streptococcus cells entered live cells and altered the live cell's characteristics

I hope this helps you

:)

Answer:

12-6

Explanation:

Answer:

a units

Explanation:

i do rsm and its right

Answer:

a units.

Explanation:

If someone asks, "How many units are between 0 and 3?" you're going to say 3, right?

Answer:

lithium ion ,zinc ion and iodine ion will move to negative electrode while bromide,chloride and barium ion will move to positive electrode

Answer:

Protons = 17 Neutrons = 18 Electrons = 17

Explanation:

The number of protons and electrons are the the same number as the atomic number.

To get the number of neutrons, subtract the number of protons from the mass number.

35-17=18

Answer:

Protons: 17

Neutrons: 18

Electrons: 17

Explanation:

To find the number of protons, you simply have to find the atomic number of the element.

To find the number of protons you have to subtract the atomic number from the atomic mass

To find electrons to add or subtract the charge that the element has. (In this case, it has no charge)