A relative density bottle has a mass of 19 g when empty. ...
A relative density bottle has a mass of 19 g when empty. When it is completely filled with water, its mass is 66 g. What will be its mass if completely filled with alcohol of relative density 0.8?
47 g
52.8 g
37.6 g
56.6 g
Correct answer is D
Let mb=mass of empty bottle,
mw=mass of water only and
ma= mass of alcohol only
given; mb=19g
mb + mw = 66g
mb + ma = ?
R.d=0.8
R.d=mass of alcohol
⇒massofalcoholmassofequalvolumeofwater
⇒ mass of equal volume of water = mw=66-19=47g
⇒0.8 = ma47
⇒ma=0.8×47 =37.6g
; mb + ma = 19+37.6=56.6g
Which of the following statements is TRUE of photoelectric effect? ...
Which of the following statements explain why hot soapy water is more effective in cleaning oil...
All the heat generated in a 5Ω resistor by 2A flowing for 30 seconds is used to evaporate 5...
Which of the following is the most suitable for use as an altimeter? ...
The internationally agreed system of units(SI) for physical measurements are ...
When two waves are superimposed on each other, the following occurrences are possible, except ...
Which is the incorrect formula for a body accelerating uniformly? ...