Chemistry: The Combined Gas Law

1. The pressure of a gas changes from 120 kPa to 50 kPa. The volume changes from 45
initial temperature is 81°C, what is the final temperature in °C?

2.) A sample of nitrogen goes from 21 m² to 14 m and its pressure increases from 100 kPa to 150 kPa. The
final temperature is 300 K What was the initial temperature in Kelvins?
sample of argon goes from 500 K to 350 K and its pressure changes from 280 kPa to 380 kPa. If th
tial volume is 18 dm3, what is the final volume?

the correct name for the n3 ion is azide. azide is a polyatomic anion with a -1 charge and is written as n3 -1. it consists of three nitrogen atoms bonded together. hope i . let me know if you need anything else.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

all eukaryotic cell have mitochondria : )

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.