Answer:
The Ksp for this compound is 3.24 * 10^-8
Explanation:
Step 1: Data given:
Molar solubility of MgCO3 = 1.8 * 10^-4 mol /L
Step 2: Calculate molarity
For an insoluble compound, its molar solubility tells you how many moles of the compound can be dissolved per liter of aqueous solution before reaching saturation.
In this case, it means that we can only dissolve 1.8 * 10^-4 moles in a liter of water at that temperature.
Moles Mg^2+ = 1.8 * 10^-4 moles
Moles CO3^2- = 1.8 * 10^-4 moles
Since we're working with one liter of solution, we can say the molarity:
[Mg^2+] = 1.8 * 10^-4 M
[CO3^2-] = 1.8 * 10^-4 M
Step 3: Calculate Ksp
Ksp = [Mg^2+]*[CO3^2-]
Ksp = 1.8 * 10^-4 * 1.8 * 10^-4
Ksp = 3.24 * 10^-8
The Ksp for this compound is 3.24 * 10^-8
Answer:
The number of mole is 1.852moles
Explanation:
To calculate the number of mole, using the formula
n = m/Mm
n - number of mole
m - number of mass
Mm - number of molar mass
The molar mass of Re = 186.207
Then, n = 345g/ 186.207g/mol
n = 1.852mol
B.
Because if you were to be in a room with orange lights the water would appear orange and glowing. Same thing with other colors this is because the sun rays pass through the atmosphere reflecting from a pure white light to a lighter blue and reflecting off of the waters surface.
Answer:
Atom, Sub atomic particle, compound, molecule
Answer:
extensive hydrogen bonding
Explanation:
The high boiling points of water, hydrogen fluoride (HF) and ammonia (NH3) is an effect of the extensive hydrogen bonding between the molecules. The London dispersion force is caused by random and temporary changes in the polarity of atoms, caused by the location of the electrons in the atoms' orbitals.
Hope this helps :)
