A
0.510

m
aqueous solution of
KBr
has a total mass of
67.0
g.
What masses of solute and solvent are present?

The concentration given here is in terms of molality which is moles of solute per kg of solution.  Therefore, we multiply the concentration by the total mass of the solution and obtain the moles of solute. We can convert this into grams and calculate for the solvent.

0.630 mol KBr / kg solution ( .086 kg solution ) = 0.0542 mol KBr

0.0542 mol Kbr ( 119.002 g / 1 mol ) = 6.4475 g KBr

Mass of solvent = 86 - 6.4475 = 79.55 g water

Explanation:

give brainliest

water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.