Answer:
We need 2 * 10^-2 grams (=0.02 grams) KOH
Explanation:
Step 1: Data given
Mass of solution = 2000.0 grams
Solution = 10.0 ppm
Step 2: Calculate mass KOH needed
A solution's concentration in parts per million tells you the number of grams of solute present for every 10^6 grams of the solution.
In this case, the target solution must have a concentration of
10.0 ppm
, what means that it must contain 10.0 g of KOH( the solute), for every 10^6 grams of the solution
This means that the mass of KOH needed to make this solution is equal to
2000 grams * 10 grams KOH/ 10^6 grams solution = 0.02 = 2 *10^-2 grams
So, if you dissolve 2 *10^-2 grams of KOH in enough water to get a total mass of the solution to 2000.0 g
, you will have a 10.0-ppm KOH solution.
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Soild because the liquid and gas are contanly moving and rearanging while soild tries to stay the same
Answer:
Explanation:
Since the transferred heat is equal to the change in the internal energy, the heat is proportional to the mass of the substance and the temperature change. The transferred heat also depends on the substance so that, for example, the heat necessary to raise the temperature is less for alcohol than for water. Hope that helps!:)