How many grams of ethanol (specific gravity 0.80 ) should be ...

[piesebel]

How many grams of ethanol (specific gravity 0.80 ) should be added to 5 grams of chloroform (specific gravity 1.50 ) if the resulting mixture is to have a specific gravity of 1.20?
 
  A) 2.0 gms
  B) 2.4 gms
  C) 1.8 gms
  D) 4.4 gms
  E) 1.6 gms

Question 2

A plucked guitar string produces a sound wave of frequency 440 Hz.
 
  (a) What is the wavelength of the sound wave (assume the speed of sound in air is 340 m/s)? (b) How much time elapses between the impacts of two adjacent compressions on your eardrum?

[emsimon14]

Answer to Question 1

A

Answer to Question 2

(a) 0.77 m (b) 2.3  10-3 s

[piesebel]

Thanks for the timely response, appreciate it

[6ana001]

Gracias!