Insoluble means that a substance does not dissociate in another, like mixing water and oil.
In an unsaturated solution, the solute does dissociate into solution but there is more "room" in the solution to hold more. Say if you have an amount of water that can dissolve 20g of salt but you only have 15g dissolved in it, that solution is unsaturated.
Assuming that the percentage composition is on the basis of weight percentage, therefore the mass of lithium would simply be the product of the two, that is:
mass Lithium = 0.188 * 1.70 g
mass Lithium = 0.3196 g = 0.32 g
Answe
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Explanation:
We use the equation:
Mass = Number of moles * Molecular or atomic mass
Since the number of moles is 1 ("one mole of carbon-12 atoms") and the atomic mass of carbon-12 atoms is 12, hence the mass would be 12 grams. Note that the unit grams (g) is used here, as it is the SI unit for mass measurement.
Number of particles in 1 mole = 6.023 × 1023
Mass of 1 electron = 9.10938 × 10-28 gm
Mass of 1 mole of electrons = 6.023 × 1023 × 9.10938 × 10-28 = 5.486 × 10 -4
Mass of 1 proton = 1.67262 × 10 -24 gm
Mass of 1 mole of protons = 6.023 × 1023 × 1.67262 × 10 -24 gm = 1.007 gm
Mass of 1 neutron = 1.67493 × 10-24 gm
Mass of 1 mole of neutron = 1.67493 × 10-24 × 6.023 × 1023 = 1.008 gm
Answer: 145 L
Explanation:
To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.
The equation given by this law is:
![P_1V_1=P_2V_2](https://tex.z-dn.net/?f=P_1V_1%3DP_2V_2)
where,
are initial pressure and volume.
are final pressure and volume.
We are given:
![P_1=2.46atm\\V_1=74.0L\\P_2=630mmHg=0.829atm(760mmHg=1atm)\\V_2=?](https://tex.z-dn.net/?f=P_1%3D2.46atm%5C%5CV_1%3D74.0L%5C%5CP_2%3D630mmHg%3D0.829atm%28760mmHg%3D1atm%29%5C%5CV_2%3D%3F)
Putting values in above equation, we get:
![2.46\times 74.0L=0.829\times V_2\\\\V_2=219L](https://tex.z-dn.net/?f=2.46%5Ctimes%2074.0L%3D0.829%5Ctimes%20V_2%5C%5C%5C%5CV_2%3D219L)
Volume change = (219-74.0 )L = 145 L
Thus the volume CHANGE that occurs is 145 L