Chemistry College

A tank (not rigid) contains 2.3L of
helium gas at 25°C. What will be the
volume of the tank after heating it
and its content to 40°C temperature
at constant pressure?

Given:
Unknown:
Formula:
Solution:
Final Answer:​

A Tank (not Rigid) Contains 2.3L Of Helium Gas At 25C. What Will Be The Volume Of The Tank After Heating

Answers

Answer 1

Convert

Temp to Kelvin25°C=298K40°C=313K

Apply Charles law

V1T2=V2T12.3(313)=298V2719.9=298V2V2=2.4L
Answer 2

Answer:

See below ~

Explanation:

Q1

Given :

V₁ = 2.3LT₁ = 25°C = 298 KT₂ = 40°C = 313 K

Unknown :

V₂

Formula :

V₁/T₁ = V₂/T₂ (Charles Law)

Solution :

2.3/298 = V₂/313V₂ = 313/298 x 2.3V₂ = 1.05 x 2.3V₂ = 2.42 L

Final Answer :

2.42 L

Q2

Given :

P₁ = 1.01 atmV₁ = 6 LV₂ = 3 L

Unknown :

V₂

Formula :

P₁V₁ = P₂V₂

Solution :

1.01 x 6 = P₂ x 3P₂ = 1.01 x 2P₂ = 2.02 atm

Final Answer :

2.02 atm

Related Questions

What is the formula mass

Answers

Answer:

mass is always constant for a body.

Explanation:

one way to calculate mass is Mass=Volume ×Density

According to one acid base theory the water acts as ?

Answers

Answer By observing both concepts, water is acting as a base

A 30:70 (mole %) ratio of acetone:water is heated to 54.36 ∘C at 760 mmHg. What is the total vapor pressure of the system? The vapor pressures for acetone and water at 54.36 ∘C are 712 mmHg and 154 mmHg respectively.

Answers

Answer:

numbers

Explanation:

idek im just bored

Turns Red Litmus paper to BLUE (Blue stays BLUE)

A.) calcium chloride
B.) citric acid
C.) glucose
D.) calcium hydroxide

Answers

I think the answer for that question is The first one (A)

W
Which option below represents the strongest acids?
A. Ka = 4.0 x 10-10
B. Kb = 4.0 x 10-10
C. Complete (100%) dissociation of hydroxide ion
D. Complete (100%) dissociation of hydrogen ion

Answers

Kb is so for bases and hydroxide is the result of the bases, thus the answer cannot be “A” or “B”. The greater the hydrogen ion concentration there is, and or the lower the Ka value, the more acidic the acid is. A Ka value of 0 means that there is a 100 % dissociation of the acid and thus very acidic. In this case, since letter “A” does not have a Ka value very close to “0” unlike “D” that has the complete dissociation of the hydrogen ion (Ka = 0). Answer choice “D” is the correct answer.

what occurs when the moon moves through Earth's shadow

Answers

Answer:

A Lunar eclipse

Explanation:

A Lunar eclipse occurs only when the sun,earth and moon are exactly aligned with earth .

This can be viewed twice in calendar years.

It's a Lunar Eclipse.

A lunar eclipse is the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon. A lunar eclipse occurs when the Moon enters the Earth's shadow. A solar eclipse occurs when the Moon's shadow falls on the Earth. They do not happen every month because the Earth's orbit around the sun is not in the same plane as the Moon's orbit around the Earth.

How many moles of fluorine atoms are present in a sample that contains 4.14 moles of ?
SF4 mol

Answers

Answer:

The Avogadro number

One mole of atoms contains 6 x 10 23 atoms, no matter what element it is

Explanation:

What is the change in temperature of 150 grams of water when gains 500 Joules of energy?. The Cp for
water is 4.18 J/gxC

Answers

The change in temperature of 150 grams of water when gains 500 Joules of energy is 0.797 °C

What is Heat Transfer ?

Heat transfer is defined as the process in which the molecules are moved from the region of higher temperature to lower temperature.

The heat transfer can be calculated by the formula

[tex]Q=m \times c \times \Delta T[/tex]

Here, Q is the heat supplied to the system,

m is the mass of the system,

c is the specific heat capacity of the system and

Δ T is the change in temperature of the system.

Substituting the values in the equation

m = 150g

Q=500 Joules

[tex]\rm c_{p}[/tex] = 4.18 J/gxC

500 = 150 * 4.18* Δ T

Δ T = 0.797 °C

Therefore the change in temperature of 150 grams of water when gains 500 Joules of energy is 0.797 °C .

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Why are prefixes often added to si units

Answers

Answer:

b

Explanation:

b

You are on a camping trip with your family. While you’re toasting marshmallows, one catches on fire.
List three more items that you might have on a camping trip that would burn.
List three items that wouldn’t burn.

Answers

1. wood
2. plastic cup
3. shoe

1. metal can
2. metal skewer
3. chicken bone
wood
plastic cup
chicken bone

In which state do molecules have the highest kinetic energy? A. in the liquid state B. in the solid state

Answers

Answer: A. In the liquid state

Detailed Explanation:

In liquids, the intermolecular space is more when compared to solids hence the molecules possess more kinetic energy.

High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressure used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 5.17x10^8 Pa, what is it’s running pressure in torr?

Answers

here this should be the answer for this lol

When did Stone become interested in caving?
As a child
In high school
During college
After he was 30 years old

Answers

Answer:

William Stone (American Caver) became interested in caving in High school .

The proposed mechanism for a reaction is:
Step 1: A+B= X(fast)
Step 2: X+C - Y(slow)
Step 3: Y - D (fast)
Which rate law is consistent with this mechanism?
-
O A.
rate = k[A][B]
ОВ.
rate = K[X][C]
O C.
rate = k[A][B][C]
OD.
rate = k[X][Y]
=

Answers

Answer:

rate = k[X][C]

Explanation:

When you are solving for rate law, you are only looking at the reactants of the slow reaction. In this case, step 2 is the slow one. Since there is only one X and one C on the reactants side, the coefficient in the rate law would each be one, which you don't need to include, as it is assumed.

What is the boiling point of c

Answers

Answer:

90 degree is the boiling point of c

Using the solubility curve above, what is the solubility of KBr when the temperature is 80°C?

A) 86 g/100 g water
B) 90 g/100 g water
C) 96 g/100 g water
D) 102 g/100 g water

Answers

Answer:

C) 96 g/100 g water

Explanation:

If you look for 80°C in x axis and move up from their until you hit the line for KBr, you will see that you hit the KBr line b/w (90-100 in y-axis) thus the closest answer is  C) 96 g/100 g water

What mass of Al2O3 is formed in the reaction of 4700 kg of aluminum?
Answer in units of kg

Answers

Answer:

2350kg of Al₂O₃

Explanation:

Step 1 : Write the balanced chemical equation:

4Al + 3O₂ → 2Al₂O₃

Step 2: Find the Ratio of Al : Al₂O₃

Al : Al₂O₃

4 :  2

2 : 1

4700: 2350

= 2350kg of Al₂O₃

Which conclusion is true based on the information in this passage

Answers

Food webs are connected to each other and sensitive to any changes.

What is food web?

A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.

From the information given in the passage, we can conclude the following based on the meaning of food webs.

Food webs are connected to each other and sensitive to any changes.

Complete question is below:

Changing one organism in a food web would not have any effect on any other food web.

It is easy to see all the ways that food webs are connected.

Food chains are always separate from each other.

Food webs are connected to each other and sensitive to any changes,

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How many grams of rubidium are in 2.39 x 1024 atoms of rubidium?

Answers

Answer:

339 grams Rb

Explanation:

To find the final answer, you need to (1) convert atoms to moles (via Avogadro's number) and then (2) convert moles to grams (via molar mass from periodic table).

Molar Mass (Rb) = 85.468 g/mol

2.39 x 10²⁴ atoms Rb                1 mole                       85.468 g
-------------------------------  x  -----------------------------  x  -------------------- = 339 g Rb
                                          6.022 x 10²³  atoms            1 mole

What state of matter is it ?

Answers

Answer:

aqueous

Explanation:

which of the following provide evidence of plate motion?

A. shapes of the continents

B. fossil s of the same species found on multiple continents

C. the age distribution of basalt at mid ocean ridges

D. the size of the continents ​

Answers

Answer:

The following evidences of plate motion are:

offset of rocks along the San Andres fault.

the age distribution of basalt at mid-ocean ridges.

the age distribution of the Hawaiian Islands

Running the reaction at 60 C would cause the reaction to...
a. Run SLOWER than normal.
b. Run FASTER than normal.

Answers

Answer:

b. Run FASTER than normal.

Explanation:

Standard temperature is 273 K or 0°C.

Hence, running the reaction at 60°C, which is higher than normal, would cause the reaction to run faster than normal.

Heat from a fire place is transferred out to the room it How does the heat from the fire place transfer out to the room?

Answers

Fire burning is a combustion reaction, which is a type of reaction that is always EXOthermic (meaning it gives off heat). When the carbon in the wood reacts with the oxygen in the air, it forms CO2 and H2O, releasing heat in the process that escapes the fire place and transfers out to the room.

As for the spread of heat:

“A fire can spread by radiation when the heat travels through electromagnetic waves in the air”
-FireSealsDirect

What does the word transfer mean?

A. To move from one place to another

B. To block energy flow

C. To move for a new job

D. To move to a warmer place

Group of answer choices

Answers

Answer: i think its A.

Explanation: hope it helps :>

help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

b

Explanation:

i beleave the answer is b i read it and it looks like the best option hope it helps

What does it depend on ?

Answers

Answer: According to the molecular orbital theory the shape and size of molecular orbital depends upon- Shape and size of combining atomic orbitals.

Explanation:


A sample of argon (Ar) gas has a volume of 7.31 L at a pressure of
735 mm Hg and a temperature of 45 C. Determine the volume in
liters when the temperature changes to 55 C and the pressure
changes to 325 mm Hg.

Answers

Answer:

17.1 L

Explanation:

P1V1/T1  =  P2V2/T2        T is in K

P1V1/T1 * T2/P2 = V2

735 * 7.31 / (45+273.15)  * (55+ 273.15)/325 = V2

V2 = 17.1 L

why electron affinity of 5 th group of periodic table increases down the group?

Answers

The electron affinity of the 5th group increases down the groups of the periodic table because the electrons are placed in a higher energy level far from the nucleus.

What is electron affinity?

Electron affinity is the energy released when an electron is attached to an atom or molecule.

Electron affinity is used as a measure of its ability to form an anion.

The electron affinity of elements decrease down the group and increase from left to right across the periodic table because the electrons are placed in a higher energy level far from the nucleus.

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How many moles of nitrogen atoms are there in 1.64 x 1023 molecules of dinitrogen trichloride, N2Cl3?

Answers

The number of moles of nitrogen atoms are there in 1.64 x 1023 molecules of dinitrogen trichloride is 0.544.

What are a number of moles?

The mole is a SI unit of measurement that is used to calculate the quantity of any substance.

1 mole is 6.022 × 10²³

[tex]1\; molecule = \dfrac{1}{6.023 \times 10^2^3}[/tex]

The given number of moles are 1.64 x 10²³

[tex]1.64 \times 10^2^3= \dfrac{1}{6.023 \times 10^2^3} = 0.272 \\[/tex]

Now, there are two molecules of nitrogen in the dinitrogen trichloride

So, 0.272 x 2 = 0.544

Thus, the number of moles of nitrogen atoms are there in 1.64 x 1023 molecules of dinitrogen trichloride is 0.544.

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How many moles of NaCl are in 5.0 L of a 0.200 M solution?

Answers

Answer:

0.1 moles

Explanation:

moles=5.0×0.200

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