Can R change?

[Ethan Mai 1D]

Are there any conditions where we would need to adjust the value of R in order to provide accurate calculations?

[Selene_Lam_1G]

The R in PV=nRT can have these values depending on the units:
1) 8.314 J/mol·K

for ideal gas laws, if the pressure is measured in Pascal and volume measured in cubic meters, then we use 1).

2) 0.0821 atm-litre/mol*kelvin

for ideal gas laws, if the pressure is measured in atm and volume measured in liter, then we use 2).

[Emmaplant1c]

R is a constant and can be different depending on which units you are using!

[daniellediem1k]

R is a constant so the true value of it does not change but the value you would insert into the equation will depending on the units used.

[Neel Fulton 1D]

The value of R would only need to be changed based on the units being used in the calculation, but since it is a constant, each value corresponding with the different units should be equivalent.

[elletruchan2I]

Hi Ethan!
R itself is a constant and does not change, but it is often seen with different units and therefore different numerical values depending on what units it is in.

[Rena Wu 3E]

Hi Ethan, there wouldn't be a condition where you'd need to adjust the value of R for calculations unless you are working with different units. Since R is a constant, its value is not dependent on any other factors. Hope this helps!

[Divya Mehta 2K]

Nope! R is a constant to it would not change unless the units change

[Joseph Ettipio]

The equation sheet has 4 different values for R due to unit differences. R is a different value depending on if it is measured in joules, atmospheres, bar, or torr. The value of R itself is constant though, differing only due to unit differences.

[Michelle Gong]

No! R is constant

[Abigail Tran 14a]

R is a constant so it does not change.

[Abigail Tran 14a]

R is a constant so it does not change.

[Triston Dinh 1D]

R is a constant but it differs depending on the units given in the equation/problem

[Shannon Lau 14B - 1H]

In the ideal gas equation, the partial pressure of a particular gas (p) multiplied by the volume that gas is occupying (v) equals the 3 constants that DO NOT change - moles of that gas (n) multiplied by temperature in Kelvin (T) multiplied by the gas constant (R). This R can have different units - the most common one being J/mK - but it will not change because it is a constant, making it a constant value.

[SerenaSabedra]

R is a constant and will not change, however, there are two different values that you will use depending on the units. It'll be R=8.3145 J/molK or 0.0821 atmL/molK.

[Ivan Huang Dis 3B]

R is an experimental constant therefore it would only change depending on what units you are using

[Emaad Sohail 3F]

R is a constant, not a variable, so it will only change with respect to the units you are using.

[Gianna Sciole 2F]

no! R is a constant, and while it can be different depending on what units are being used, it is the same value of 0.0821 atm*L/mol*K

[Trisha Badjatia 2L]

Because R is a constant, the actual value of it does not change. However, the units might, in which case, the number will reflect the change in the units. When using Joules, the value of R is approximately 8.314 J/(mol•K). When using atm•liters, the value of R is approximately 0.08206 atm•liter/(mol•K).

[Macy_Anderson_2F]

R is a constant so its value does not change (unless the units change)

[Aaron Martinez]

R is a constant used in the ideal gas law equation. It will always stay the same, unless you use different units.

[Mia Orr 3B]

R is the gas constant (8.206 x 10^-2 L·atm·K^-1 ·mol^-1), so its value will not change.

[Madison Kiggins 1E]

Hi, R itself is constant, so the overall value of it will not change. However, depending on the units you are using, the numerical value will be different. So, the amount of R will remain the same, the difference is only in the units used to measure said amount.

[Jessica Sun 2I]

Since R is a constant, the value does not change but depending on what units you are provided, you might have to be convert numbers to match the correct units of R which is L atm / mol K

[Tania Peymany 1A]

No, because it is a constant but that does not mean that you can't convert it so it has different units, but still maintains the same value.

[Noa Popko 3I]

R doesn't "change" because it is a constant, but it can take on different numbers depending on which units you use to derive the R value.

[Ameen Shaheen 2I]

R remains the same constant (2 values) but must be used depending on the values needed for the equation

[Jaipal Virdi 2I]

Hey Ethan! R is a constant and will only change depending on the units used.

[Jelix Tsan 2H]

As long as the units involved in the R constant do not change from the standard, then R will not change.

[Madelyn_Rios_2c]

R is a constant and does not change. R is a different value depending on the units used.

[raynebunado]

R is a constant and only needs to be switched if the units are

[sidneypalacios]

Since R is a constant, the actual value does not technically change, but the numeric value could change depending on which units are used

[Jieun 2C]

R is constant and does not change. The numerical value used for R can differ depending on the units but it is the same.

[Brooke Gushiken 1B]

Hi! R is a constant, so it technically doesn't change. However, the R value can be different depending on which units you're using in the PV=nRT equation, but ultimately they're all the same value after being converted to the same units.

[Mekenna Faulkner]

R is a constant and has different values that correspond to the units. These values would be given to you rather than having to be calculated through conversions.

[Jasmine Reblando 3A]

R is a constant value so it does not change. But, there are different ways of going about expressing the value of R due to using different units.

[Ameerah Hameed 3B]

R cannot change due to the fact that it is a constant.

[605607825]

Hello,
R does not change since it is a constant! However, it may change if the units are altered. R is also known as the molar gas constant. I hope this helped!

[sophiavmr]

The actual value of R will not change, but you may have to write it a different way depending on what units are being used!

[Daniel Tabibian 3K]

R is a constant, but there can be different values for it depending on which units you are using.

[Emily Quill 2H]

Hi! R is a constant, so it will only change when the units are changed.

[Monse Mata 3D]

No because R itself is a constant and does not change, we can, however, see different units representing it.

[Katherine Li 1A]

R cannot change, as it is a predetermined constant, much like Planck's constant or c, the speed of light. However, it may be represented by different numbers in different situations, depending on the units being used to measure it.

[N Kanuri 2E]

R is a constant, so its value does not change. It can be expressed as different numbers based on the units involved, so be careful to use the correct one based on the pressure units!

[Sara Dolmo 2J]

R is going to be the same! the only thing that would make it change is the units

[Naomi Christian 1E]

R cannot change as it is a constant. However, the value of it can change depending on which units you are using.

[Prithvi Raj 3E]

No, R does not change. It is a constant and doesn't change when other variables change.

[Ashrita Singh 2F]

There are different values for R depending on what units are being used.

[trevina_brown_2A]

The value of R would only need to be changed based on the units being used in the calculation

[Darren Apostol 2L]

R is the gas constant, so it cannot change. Only the units can (which means you can convert the number).

[Samantha Toscano 2C]

R is constant and cannot be changed. However, it depends on which units are being used.

[emmakvarnell]

Unless you need to switch units between J/(K*mol) to (L*atm)/(K*mol), then R should stay the same. Both of these values are on the constants and equations sheets, so just make sure you're aware of what units the question is asking for.

[andreagutierrez 3K]

R is a constant and basically will not change unless units differ.

[Shreya Arcot 3K]

Since R is a constant, it won't change. But, there are different R values based on the different units. You would need to select the R value that has the same units as the other values in the problem.

[Diana Avalos]

R is a constant meaning its true value doesn't change, however, it could change if you are using different units

[Nicole Friday 1E]

R is a constant, so it doesn't change. However, there are different values of R depending on the units.

[Milan Vognarek 1A]

The true value of R will remain the same since R is a constant, but its numerical value will vary depending on the units which are used.

[Mahika Saoji 3K]

Hi! R is actually a constant, so the value itself doesn't change, however, it can be a little different depending on the units you're using! I hope that helped!

[Tomas Burgess 3F]

Since R is a constant, its value will not change unless you change the units of R, which are either J/(K*mol) or (L*atm)/(K*mol), because the value of R is different for these 2 units.

[dahlia Faruque]

R is a constant it may change depending on the units you use

[Isabelle Kim 3E]

R being a constant means that it does not change, but its units may be expressed differently through conversions. Typically, we would use R = 8.314 J/K*mol.

[Mara Crooks 1F]

R changing only happens with unit changing but it is a constant. R = 8.314 J/K*mol but that would need to be converted based on units.

[gracebinder3I]

Hi!
R is a constant in the ideal gas equation, but depending on the units used in the question, this constant can be converted. So, R could be 8.314 J/Kmol or 0.0821 Latm/Kmol.
I hope this helps!

[Cynthia_L_2C]

Hi!
R is a constant that does not change unless the units are converted.

[elletruchan2I]

Hi Ethan!
R is dependent on the units you have available to you, so depending on what equation you are using you'll use a different value for R with different units.

[Jessica Servoss 1H]

The value of R itself doesn't change because it is a constant, however there are different R values to use depending on the units you have in your equation.

[405532435]

R can either be 8.314 or 0.08206 depending on the units used!
Hope this helps

[Collin Le 3I]

No, R cannot change because it is a constant. However, it is important to recognize that there are different R values depending on the units in the equation.

[Collin Le 3I]

No, R cannot change because it is a constant. However, it is important to recognize that there are different R values depending on the units in the equation.

[andrea tarelo 3e]

Since R is a constant, it wouldn't change like other numbers would at different temperatures or conditions. However, just like other constants, there are different versions you can use depending on the units that you are working with.

R= 8.314 Joule/mol*Kelvin(In SI unit)

Or

R= 0.0821 atm-litre/mol*kelvin

[Talia Tam 3L]

R will not change because it is a constant. However, there may be different values because of different units.

[Adithi Ayyala 2G]

Hi Ethan! R is simply a constant that is used in these equations that allow for stoichiometry in various different equations to cancel certain units of measurement out, and therefore we simply use the value of the constant that allows for this to work.

[Crystal Ma 2J]

Depending on the units of the values given in the problem, you may have to use a different value of R

[405716590]

Yes R can be different if the gas is non-linear

[Nandini_Parmar_1I]

R is a constant but there are two R constants so you can choose which one best fits what you are solving for.

[Desiree Eshraghi 3A]

R is a constant. The units may change but the value does not.

[Nick Oscarson 1K]

R is a constant, meaning that it does not change. Rather, there are different values for R depending on the units that are used. For instance, in the table below, it shows the values that are associated with the units used. Most often, we see values 0.0821 and 8.314 used in this class.

[Emily Ngo 1E]

Hi Ethan,
R is constant but the number can be different depending on the units. The three on the constants and formula sheet include R =8.314 J/K mol,
R=8.206 x 10^-2 L atm/ K mol, and R = 8.314 x 10^-2 L bar / K mol. I believe the one that is most common is the R=8.206 x 10^-2 L atm/ K mol because we often use R in the ideal gas law (PV=nRT) and you need units to cancel.

[Eszter Kovacs 1A]

no.

[Bailey Herbert 2L]

Since R is a constant, its "base"/"true" value cannot change but depending on the units being used the value of R can be different.

[Yewon Jang 3K]

R is a constant, however depending on the units you use, its value will change.

[Mahli Martinez 2I]

R is a constant value, therefore it can not change. However, the units can change

[Emma Goellner 2I]

The actual value of R will stay the same, as it is a constant. However, the units of R are very important, so it's necessary to ensure the right cancellations can be made.

[David Facio 3C]

Initially, you'd think since R is a constant, it should not change.

BUT it's important to remember that it can be one of two values, depending on which units are used:

R = 8.3145 if using units of J / mol K

OR

R = 0.0821 if using units of atm L / mol K

[Nomi Heidari-Bateni 2K]

Since R is a constant, it is a value that does not change. We can change this value's units, depending on the situation we want to use it in, but we cannot change R itself.

[105532700]

R is a constant but it can change under certain conditions or variable

[Jaipal Virdi 2I]

It depends what you are solving for! Whether it is in atm or J and change the R constant accordingly.

[Emily Wu 2G]

i think that there's two values of R that are both constants and used when they are fitting the units of the problem.

[Jessica Sun 2I]

R is a constant so the actual value does not change but the form that is used depends on what units the problem is in.

[Alyssa H]

The R-value you will use for problems with the ideal gas equation depends on the units of the other terms in the equation. The different R-values and their units are laid out in the constants and equations sheet!

[Chelsea Tran 3H]

The constant R only changes depending on which units you are using. For example, if we were to calculate energy (J) R would be 8.314J/(K mol), but if we are using the law of ideal gas, then R would be 0.0821 (L atm)/(K mol).

[Evonne Chau 2I]

Hi Ethan,

R changes based on the units used. However, because it is a constant, the values corresponding to the different units should be equivalent.

[RCortez_1A]

R is a constant with two possible values, the value you use depends on the question.

[Sean Sanders 1E]

Because R is a constant, the value you use is dependent on which units you are given/ looking for

[Esmeralda_Solis_2D]

For most cases R is constant, but you will have to know which constant to use based on a given problem and the desired units.

[Daniela G 2C]

The value R does not change, but the value is adjusted according to these units.

[Rachel Bartley 2B]

R is a constant, but there are different values of it for different units, so you would use the R value specific to the units given in each problem.

[Nathan Morgan 2C]

The only conditions that would require us to change the value of R would be to match the units given in the problem. However, besides this condition the R value is constant and therefore should not change.

[305597516]

No, but definition, R is the gas constant. While it never changes, its value can be different based on what units you are using. For example, the gas constant 8.314 has the units J.K^-1.mol^-1, so you would use that when you want an answer involving J.

[Jennifer Kainth 3L]

R is a constant that varies depending on the units you choose