Please help!

A solution of salt and water contains 60 grams of water per 120 milliliters of the solution. If 1 mole of water weighs 16 grams, _____ moles of water would be present in 40 milliliters of the solution. [Round off your answer to two decimal places]

Question

Please help!




A solution of salt and water contains 60 grams of water per 120 milliliters of the solution. If 1 mole of water weighs 16 grams, _____ moles of water would be present in 40 milliliters of the solution. [Round off your answer to two decimal places]

anonymous · Answer

@Luigi0210 @UnkleRhaukus can you guys help me?

anonymous · Answer

@ganeshie8

anonymous · Answer

can you help me ?

ganeshie8 · Answer

60 grams of water per 120 milliliters of the solution.

=>

40 ml of solution will have 20 grams of water

ganeshie8 · Answer

so u need to figure out,
how many moles that 20g represents

ganeshie8 · Answer

$\large 20g * \frac{1 mol}{16g}$  

$\large \frac{20}{16} mol$  

simplify

anonymous · Answer

I got same 1.25. But it said to round and i rounded like this 1.3

ganeshie8 · Answer

round to what ?

ganeshie8 · Answer

1.25
rounded to two decimal places is

1.25 oly

anonymous · Answer

okay, I thought it has five so I thought it might be 1.3, that's why, I rounded 1.3 and I got wrong. lol 

thanks so much for help!!! :)

ganeshie8 · Answer

np.. u wlc :)