1. The volume of a gas, at constant pressure, is 100 ml. If the volume is increased to 250 mL when the temperature is 300 K, what was the initial temperature of the gas?
Please help it’s due at 10:00am

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Which of the following statements about acidic water is true? a. acid has no effect on the h, o molecules. b. the solution contains a larger number of oh ions than h, o ions. c. the solution contains a larger number of h, o ions than qh ions. d. the solution contains an equal number of h, o ions and oh ions. none of the above e.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer