How many grams of ethanol (density 0.80 g/cm3 ) should be added to 5.0 g of chloroform (density 1.5 g/cm3 ) if the resulting mixture is to have a density of 1.2 g/cm3?

Assume that the fluids do not change their volumes when they are mixed.
A) 2.0 g
B) 2.4 g
C) 1.8 g
D) 4.4 g
E) 1.6 g


A

Physics & Space Science

You might also like to view...

Intensity of Sound: A certain glass window reduces the intensity level of the sound from 72 dB to 47 dB. By what factor is the acoustic power reduced by this glass window?

A. 3.2 × 10-3 B. 2.2 × 10-2 C. 5.6 × 10-2 D. 1.0 × 10-1 E. 1.5 × 10-1

Physics & Space Science

A transformer actually transforms

A) energy from one value of voltage to another. B) magnetic and electric field lines. C) generators into motors. D) motors into generators. E) all of the above

Physics & Space Science

Planet A has twice the mass of Planet B. From this information, what can we conclude about the free-fall acceleration at the surface of Planet A compared to that at the surface of Planet B?

A) The free-fall acceleration on Planet A must be twice as great as the free-fall acceleration on Planet B. B) The free-fall acceleration on Planet A must be four times as great as the free-fall acceleration on Planet B. C) The free-fall acceleration on Planet A is the same as the free-fall acceleration on Planet B. D) The free-fall acceleration on Planet A is greater than the free-fall acceleration on Planet B, but we cannot say how much greater. E) We cannot conclude anything about the free-fall acceleration on Planet A without knowing the radii of the two planets.

Physics & Space Science

A source emits sound at a fixed constant frequency f.If you run towards the source, the frequency you hear is lower than f

a. True b. False Indicate whether the statement is true or false

Physics & Space Science