PLEASE PLEASE HELP ME!!!A 450 ml gas sample has a pressure of 1.25 atm at 65 °C. What is the temperature, in °C, at which the gas will expand to 865
mL with a pressure of 0.89 atm?

Answers

Answer 1

Answer:

89°C

Explanation:

Combined Gas Law (P₁V₁)/T₁ = (P₂V₂)/T₂

(1.25 atm)(450 mL)/(65°C) = (0.89 atm)(865 mL)/T₂

8.653846154 = 769.85/T₂

T₂ = 769.85/8.653846154

T₂ = 88.96044444 = 89°C


Related Questions

A student was directed to convert the mass of a boulder from kg to pounds.
Conversion factor: 1 pound = 454 g
The mass is 22 kg. The student calculated the weight to be 0.048 pounds.
Is this correct? If not, what went wrong?

Answers

Answer:

Incorrect

Explanation:

Given that,

The mass of a boulder, m = 22 kg

We need to find the weight of the student in pounds.

We know that,

1 pound = 454 g

or

1 g = (1/454 pounds)

22 kg = 0.022  grams

So,

0.022 grams = [tex]\dfrac{0.022}{454}\ pounds[/tex]

= 0.000048 pounds

The student says the weight is 0.048 pounds. It means he was incorrect.

What causes pressure inside a bicycle tire ?

Answers

Answer:

Enclosed gas.

Explanation:

It’s worth 50 points! Please help!

Answers

Answer:

1) NO2

2) 49.4%

Explanation:

An empty graduated cylinder has a mass of 42.91 g. When filled with 40.00 mL of an unknown liquid, it has a mass of 103.26 g. Calculate the density of the unknown liquidz

Answers

Answer:

1.511g/mL

Explanation:

To find density, we can use the equation

[tex]d=\frac{m}{V}[/tex]

We have V (40mL) To find m (mass), we must subtract as such:

[tex]103.36-42.91=60.45[/tex]

60.45 grams is the mass of the unknown liquid.

Now, we plug the values we have into the density equation.

[tex]d=\frac{60.45g}{40.00mL} \\\\ d=1.511\frac{g}{mL}[/tex]

The density of the unknown liquid is 1.51 g/mL

Density can be defined as the mass of an object per unit volume of the object.

[tex]Density = \frac{mass}{volume}[/tex]

To solve the question given above, we'll begin by calculating the mass of the unknown liquid. This can be obtained as follow:

Mass of empty cylinder = 42.91 g

Cylinder + unknown liquid = 103.26 g

Mass of unknown liquid =?

Mass of unknown liquid = (Cylinder + unknown liquid) – (Mass of empty cylinder)

Mass of unknown liquid = 103.26 – 42.91

Mass of unknown liquid = 60.35 g

Finally, we shall determine the density of the unknown liquid. This can be obtained as follow:

Mass of unknown liquid = 60.35 g

Volume of unknown liquid = 40 mL

Density of unknown liquid =?

Density = mass / volume

Density = 60.35 / 40

Density of unknown liquid = 1.51 g/mL

Therefore, the density of the unknown liquid is 1.51 g/mL

Learn more: https://brainly.com/question/17262276

consider the following atoms and ion: Cl,Mg,P,K,Ce =
A)which one is an example of ns² family?
B)which one is an example of p-block element?
C) which is (are) isoelectronic with Argon?
D) Which one is an example of alkaline earth metal?
E) which one has core configuration [Ne]3s²?
F) which one is an example of f-block element?
G) which one is d-block element?
H) which one has outer shell configuration of ns²p³?

Answers

Answer:it would be f

Explanation:

How many atoms are in 56 grams of silicon?

Answers

Answer:

[tex]atoms=1.2x10^{24}atomsSi[/tex]

Explanation:

Hello there!

In this case, by considering the mass-mole-particles relationships, it is possible to compute the atoms of silicon by firstly computing the moles via its atomic mass (28.1 g/mol):

[tex]mol=56gSi*\frac{1molSi}{28.1gSi} =2.0molSi[/tex]

Next, via the Avogadro's number, we can compute the atoms of silicon:

[tex]atoms=2.0gSi*\frac{6.022x10^{23}atomsSi}{1molSi}\\\\atoms=1.2x10^{24}atomsSi[/tex]

Best regards!

Difference between sublimate and distillate

Answers

Answer:

 distillate is the liquid that has been condensed from vapour during distillation; normally a purified form or a fraction of an original liquid while sublimate is (chemistry) a product obtained by sublimation

3
1 point
The formula for acetic acid is HC H302
What is the percent composition of carbon in acetic acid?
molar mass of the element you need to find a percentage of
molar mass of the entire substance
40.0%
20.0%
33.3
41.4%
Previous

Answers

Not sure but I think the last one

Explain why water and syrup are able to mix?​

Answers

you can’t because the water would rise and the syrup consistency would not mix

To be considered a true mineral,
what state of matter must be
present?

Answers

Solid: Liquids and gases are not considered minerals, in large part because their structure is constantly changing, which means they do not have a characteristic crystal structure. A true mineral must be solid.

Janet runs 6.4 miles in one hour. Is it speed or velocity or acceleration

Answers

Answer:

acceleration

Explanation:

Ok so N2+O2=2NO and my delta h is 180.5 kJ I need to know. If I react 10 g of nitrous gas with excess oxygen how many grams of Nitrogen monoxide will be produced

Answers

Answer:

21.6 grams

Explanation:

N₂ + O₂ → 2NO

First we convert 10 g of N₂ into moles, using its molar mass:

10 g ÷ 28 g/mol = 0.36 mol N₂

Then we convert 0.36 moles of N₂ into moles of NO, using the stoichiometric coefficients of the balanced reaction:

0.36 mol N₂ * [tex]\frac{2molNO}{1molN_2}[/tex] = 0.72 mol NO

Finally we convert 0.72 NO moles into grams, using its molar mass:

0.72 mol NO * 30 g/mol = 21.6 g

Hiiii :D !! I need help please :>

Answers

Answer:

7 false

8 True

9a

:)

Explanation:

If H2O is removed from this reaction, what will happen? 2H2 + O2 + 2H20 O A. The product-favored reaction will stop. B. The reactants will react to produce more H2O. C. The equilibrium will not change. D. The reaction will be reactant-favored.​

Answers

Answer:

B. The reactants will react to produce more H₂O

Explanation:

Given the reaction

2H₂+O₂→2H₂O

A decrease in the amount of H₂O will cause the reaction to produce more H₂O. When you change something, the reaction seeks to undo that change.

A student pours 800.0 mL of a 3.000 molar solution of sodium hydroxide into a 2.00 liter volumetric flask and fills the flask up with water. What is the new molarity of the solution?
5 points
12.00 M
1.20 M
14.00 M
0.0750 M

Answers

M1V1 = M2V2
M1 = 3.000 M
V1 = 0.8000 L
M2 = ?
V2 = 2.00 L

M2 = M1V1/V2 = (3.000 M)(0.8000 L)/(2.00 L) = 1.20 M

what is the name of this structure here please and thanks ​

Answers

Answer:

look at the file that the other person sent

The atomic radius _________________ down a group. Explain why

Answers

In general, atomic radius decreases across a period and increases down a group.
Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius.
Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.

How many moles of caffeine are in 130 mg of caffeine coffee?

Answers

Answer:

0.00067mols

Explanation:

firs convert 130mg to grams which is 0.13g, then find the molar mass of caffeine which is 194.19g/mol.

0.13g/194.19gmol=0.0067mols

Which category is our Sun located?
Question 2 options:

White Dwarfs

Supergiants

Giants

Main Sequence

Answers

Answer:

main sequence is the correct answer of your question

The sun is located in the main sequence in the solar system of the universe. Option D is correct.

What is a solar system?

The solar system is a gravitational bound system that consists of some planets like the moon, earth, Neptune, venus, mars, mercury, Saturn, and Uranus these revolve around on the orbit of space.

The sun is the center of all the planets that is all planets revolve around the sun only as it is the biggest star for all the planets and the majority of the mass of the planet is the sun only.

Therefore,  Option D is the correct sun located in the main sequence in the solar system of the universe.

Learn more about the solar system, here:

https://brainly.com/question/12075871

#SPJ2

Methane reacts with chlorine to produce methyl chloride and hydrogen chloride. Once formed, the methyl chloride may undergo further chlorination to form methylene chloride (CH2Cl2), chloroform, and carbon tetrachloride. A methyl chloride production process consists of a reactor, a condenser, a distillation column, and an absorption column. A gas stream containing 80.0 mole% methane and the balance chlorine is fed to the reactor. In the reactor a single-pass chlorine conversion of essentially 100% is attained, the mole ratio of methyl chloride to methylene chloride in the product is 5:1, and negligible amounts of chloroform and carbon tetrachloride are formed. The product stream flows to the condenser. Two streams emerge from the condenser: the liquid condensate, which contains essentially all of the methyl chloride and methylene chloride in the reactor effluent, and a gas containing the methane and hydrogen chloride. The condensate goes to the distillation column in which the two component species are separated. The gas leaving the condenser flows to the absorption column where it contacts an aqueous solution. The solution absorbs essentially all of the HCl and none of the CH4CH4 in the feed. The liquid leaving the absorber is pumped elsewhere in the plant for further processing, and the methane is recycled to join the fresh feed to the process (a mixture of methane and chlorine). The combined stream is the feed to the reactor.

Required:
a. Choose a quantity of the reactor feed as a basis of calculation, draw and label a flowchart, and determine the degrees of freedom for the overall process and each single unit and stream mixing point. Then write in order the equations you would use to calculate the molar flow rate and molar composition of the fresh feed, the rate at which HCl must be removed in the absorber, the methyl chloride production rate, and the molar flow rate of the recycle stream. Do no calculations.
b. Calculate the quantities specified in Part (a), either manually or with an equation-solving program.
c. What molar flow rates and compositions of the fresh feed and the recycle stream are required to achieve a methyl chloride production rate of 1000 kg/h?

Answers

Your gonna half to space this out in order for me to answer if you don’t mind. I’ll answer in the comments

Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C. Which equation should you use? P equals StartFraction n R T over V EndFraction. n equals StartFraction R T over P V EndFraction. n equals StartFraction P V over R T EndFraction.

Answers

Answer:

0.056 moles air

Explanation:

P·V = n·R·T => n = P·V/R·T

P = 750 Torr = 750 mmHg = (750mm/760mm/atm) = 0.9868 Atm

V = 1.35 Liters

R = 0.08206 L·atm/mole·K

T = 17°C = (17 + 273) K = 290K

n = (0.9868atm)(1.35L)/(0.08206L·atm/mole·K)(290K) = 0.056 moles air

Answer:

first part is C

.056 moles

third part is B

Last is 932ml

Explanation:

What does conclusion mean? Don’t get it from Googl I don’t understand the language! :)

Answers

Answer: A conclusion is the end of a statement or story that is highly descriptive to sum up the statement or story.

2.54 mL of ethanol to mol ethanol

Answers

Cowewewwws krakensbbejexbdj

structure of 2,3-dimethylheptane

Answers

Answer:

Please find the structure of the hydrocarbon in the attachment section and details on how to draw it in the explanation section.

Explanation:

Heptane is a member of the alkane group, which has a general formula of CnH2n+2. If n in heptane is 7, this means that the chemical formula for heptane will be C7H16 i.e.

= C7H2(7) + 2

= C7H14+2

= C7H16

C7H16 is the chemical formula for heptane, which is a linear hydrocarbon with 7 carbon atoms and 16 hydrogen atoms. However, in the name of the hydrocarbon compound given in the question: 2,3-dimethylheptane;

- Two methyl groups (CH3) has a substituted two hydrogen atoms specifically at carbon 2 and 3 respectively. Therefore, the new chemical formula of 2,3-dimethylheptane will be: C7H14(CH3)2

Please find the structural formula of the compound; 2,3-dimethylheptane as an attachment.

If you are given 64.0 grams of CH4, how many grams of H2O are made

Answers

Answer:

144 g of H₂O.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

CH₄ + 2O₂ —> CO₂ + 2H₂O

Next, we shall determine the mass of CH₄ that reacted and the mass of H₂O produced from the balanced equation. This can be obtained as follow:

Molar mass of CH₄ = 12 + (4×1)

= 12 + 4 = 16 g/mol

Mass of CH₄ from the balanced equation = 1 × 16 = 16 g

Molar mass of H₂O = (2×1) + 16

= 2 + 16 = 18 g/mol

Mass of H₂O from the balanced equation = 2 × 18 = 36 g

SUMMARY:

From the balanced equation above,

16 g of CH₄ reacted to produce 36 g of H₂O.

Finally, we shall determine the mass of H₂O produced by the reaction of 64 g of CH₄. This can be obtained as follow:

From the balanced equation above,

16 g of CH₄ reacted to produce 36 g of H₂O.

Therefore, 64 g of CH₄ will react to produce = (64 × 36)/16 = 144 g of H₂O.

Thus, 144 g of H₂O were obtained from the reaction.

Conduction is the transfer of energy by the movement of currents. ture or false

Answers

conduction is the transfer of energy by the movement of currents(it is true)

Answer:

false

Explanation: Its actually Convection

How are ocean waves formed? gravity energy transfer conduction radiation​

Answers

i think is energy passing and if its not im so sorry :(((

Answer:

I apologize that I'm late and all But your answer is B. Energy Transfer.

Explanation:

The waves transfer energy to the sand for example.

Using the following equation:

2 NaOH + H2SO4 à 2 H2O + Na2SO4

How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid?

Answers

I think this is it...

Explain how one would sort an element according to the properties of a metal, a metalloid, or a nonmetal.

Answers

Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.

I need help with this​

Answers

Answer:

1. D.

2. G.

3. F.

4. E.

5. J.

6. I.

7. C.

8. H.

9. A.

10. B.

Explanation:

Answer:

1D

2G

3F

4E

5J

6I

7C

8H

9A

10B

Explanation:

1D

2G

3F

4E

5J

6I

7C

8H

9A

10B

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