Hi please help!! During a storm, the amount of fallen snow is measured every 20 minutes. Which of these terms describes the amount of snow measured?
significant variable
independent variable
dependent variable
controlled value

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

What is the molar mass of a gas that has density of 2.054 g/l

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?