Answer:
Explanation:
We'll assume there is an excess of silver nitrate, so that all 12.0 moles of the magnesium (Mg) will react.
The balanced equation tells us we'll obtain 2 moles of Ag for every 1 mole of magnesium, for a molar ratio of 2/1.
Starting with 12.00 moles Mg, we would therefore hope to find twice that, or 24.00 moles of Ag.
To convert to grams, find the molar mass of Ag from the periodic table.
Ag has a molar mass of 107.9 (to 4 sig figs) grams/mole.
(24.00 moles)*(107.9 grams/mole) = 2590 grams (4 sig figs)
Hands off, it's mine.
The correct answer is a the sun
Answer:
Osmotic pressure is a measure of a solution's tendency to attract or take in water from another solution when the two solutions are separated by a semipermeable membrane
The order of increasing osmotic pressure is
- 0.7% KCl
- 1.5% KCl
- 1.8% KCl
- 5.0% KCl
- 8.6% KCl
Explanation:
Osmotic pressure is the strength of movement of the solvent of a solution through a semipermeable membrane separating solutions of different concentration thereby causing the solvent (such as water) to move from a region of high solute concentration to a region of lower solute concentration.
The amount of osmotic pressure through a semipermeable membrane separating solutions of different concentration is given by
π = i×M×R×T
π = osmotic pressure
i = van't Hoff's factor
(M) = molar concentration
(T) = temperature in kelvin
R = ideal gas constant (0.08206 L atm mol⁻¹K⁻¹)
As seen above , the osmotic pressure is directly proportional to the concentration of the solution thus in the order of increasing osmotic pressure we have
- 0.7% KCl
- 1.5% KCl
- 1.8% KCl
- 5.0% KCl
- 8.6% KCl
Answer: The volume of sample at 400 K is
Explanation:
Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.
(At constant pressure and number of moles)
where,
= initial volume of gas =
= final volume of gas = ?
= initial temperature of gas = 360 K
= final temperature of gas = 400 K
Putting in the values we get:
Thus volume of sample at 400 K is